Oh man i was stressing wiring this harness in after all the plug and play stuff was done. You made me feel much better and confident thank you i have the same harness.nice tip with the fuel pump and wire to starter
I have a quick question im installing a 5.3 lm7 and the the donor 4l60 transmission came out of a 06 chevy tahoe but what i notice is that it was a neutral safety switch and my hardness doesn’t have a connection for it what should i do there’s nothing in TH-cam that talks about it
Thx u for the good info,? I c the green data wire to the ecm ,?But where is the white wire going coming out of the fuse block next to it ,is that the tach wire,where does it run and what is it 's function
I have a question about the two starter wires? On e I put them on my starter with the battery wire...do I have to install my cars old starter wires also???
@@JovaniDanteGriego I'm with ya, I'ma run me a momentary switch from somewhere else so nobody can steal it, truck had an electrical fire before I got it and the left side of the firewall plug isnt there, I appreciate you getting back with me so fast, you rock, bro, you're just flying around saving everybody's day, ain't ya? if you don't have a cape yet, you oughta go get one! (just don't really try to fly)
Thank you for the informative video. It helped a lot. I have a stock 1978 Silverado, putting in 2000 5.3 vortex in it. What is the easiest way to run an inline fuel system using the stock tank? My intake has supply and return line. Thanks for the help.
@@JovaniDanteGriego ok thank you. I couldn’t find that particular model but will continue looking. Will it work connecting the pump to the external port of the sending unit sticking out of the tank? or do I need to get another tank? Or would it work if I attach a pump to the sending unit that’s inside the tank?
@markcagle4827 it should work. Just mount the pump lower than the tank www.highflowfuel.com/genuine-walbro-ti-255lph-universal-external-inline-pump-wal-gsl392/?sku=WAL-GSL392-939-8AN6AN&gad_source=1&gclid=CjwKCAjw_Na1BhAlEiwAM-dm7GOdznatW3pRTXub87d2gxz6xnixbjh9IPZdI7vrX_y9J5QTsxpzBBoCvnwQAvD_BwE
Since it's a square body, check out my Holley sniper efi on my dually, you can get a efi tank for these trucks for like $100 bucks. 87 r10 efi tank, with the 87 sending unit. Then all you have to do is get your self a fuel pump for a 1997 c3500 and mount that in the sending unit
@@JovaniDanteGriego Thank you. I like that idea. I was going to have to change the tank, rust in it. Only thing I’m confused about is the 1997 c3500 pump. Is it because of the psi it produces?
@@davidpate7807 yes it will start, you can get O2 sensor adapters on Amazon you just need to know what your sensors look like, or even better just get the right sensors
Great information here thanks. I’m trying to tie in the park neutral safety switch that came on the transmission. I managed to find wiring diagrams however there is one connection I’m not sure about. It’s the park/neutral position. One of the wires goes to the starter relay. The other goes to the power train interface module (PIM). The PIM in turn has a wire to pin 58 on the C1 connector of the ECU. Have you had any experience with this. What exactly is the PIM as I don’t have it. Do I need it to make the park neutral safety switch work?
I have not messed with this, so let me look into it, I've usually just tuned the trans to park/neutral so it doesn't care about the neutral safety but I will see which wire is needed for you
That 12v wire you had to relocate to the distributor. is that ecu wire supposed to be consent? Could you hook it direct to the battery with those other ecu 12 v wires, that you had all them originally connected to gether?
So 2 ring wires and positive battery post wires all go on one side of the starter and the small red signal wire goes to the crank position on the back of the key switch and that’s it for wiring the starter?
@@JovaniDanteGriego . Hi no that still has its pink wire. I watched a few videos and it seen the pink wire in other looms, but can't see where it should go. Ls1 now in a 56 chev. Car running great but trans in limp mode and was thinking this pink wire maybe the issue. It doesn't have 12v on it already.
Hi amigo thanks for your video i have a question i order the same harness but the one i get the the MAF is diferent my donor vehicule the MAF sensor is 5 pins and one i get is just 3 pin and a extra separate conector with 2 pins how you make yours to work.... thank you
So I’m ls swapping a 1935 hudson it’s a shell the only wires in it are the eBay ls harness. I’m trying to wire it to start I have a good battery and I’m sure of that but when I crank it drops from 12 to bellow 9. the way I have it wired is the red wire to the relay is wired straight to the battery and I have no spark I am at a loss. I’ve checked grounds 100 times cleaned everything.
Go get your self a ignition switch from AutoZone or O'Reilly's. Now run a wire from the start terminal to the little starter post. Run yourself a wire from the battery to the battery terminal Now run a wire from the ign post to the ign wire on the harness. Run the 2 red wires on the harness to the starter battery post. 1 ground by the ECU 1 behind the head. That should be everything you need
@@JovaniDanteGriego hey thanks for responding so fast I hooked it up just how you said but it is still dropping from 12 to 9 no spark. I’m willing to try anything if you have ideas.
For the under dash wire harness could I tap in to my stock harness or whatever it goes to? Or is there a module/box I need to get to be able to connect them? Also how do I get power to my ignition switch? Is it the red loose wire that came close to the relays? I have seen a couple of videos but found yours more informative. Thank you
It depends on what car your using. This harness doesn't need to connect to your ignition switch. It just needs a power wire that's on when cranking. Your ignition switch should already be wired or correctly before installing this harness
@@JovaniDanteGriego I’m doing it on a 96 Chevy that was a v6. I pulled the engine harness out and motor and put a 04 5.3 in now I’m just stuck with getting power to the switch to make it work
@@hihi-rf3fh there should be 2 red 12v constant wires with ring terminals. Those go to starter. The other wire (pink I think) goes to a ignition source. So on with key on and while cranking
So I built my first LS, I'm looking to put it in my 81 firebird but first I want to start it on a stand. How do I get the starter to start if both of those wires go on the same post
Get a cheap lawn mower or universal ignition switch, wire it correctly to battery, than run a wire from the ignition switch to the starter solenoid. It works the same way in a car
The reason they did not use the same power wire to feed the ignition relay and fuel pump is because you should have a fused power source for the fuel pump
Real quick note - On the fuel pump relay, you mentioned that the ECU probably sends about 5v to the relay on the green wire so that the relay will send the full 12v out to the fuel pump on the red wire. The idea here is correct but instead of different volts it is amps that are different. The relay's electro-magnet draws a small amp load of current to operate so the green 12v wire is a smaller gauge since it is only handling the small amp load; however, the fuel pump pulls a much larger amp load of 12v power when it is running. Because of this, the 12v red feed wire to the pump must be a larger gauge to handle the larger 12v amp load. Being able to control devices that draw a lot of current through the use of small gauge switch wires is one of the main uses for relays.
Thanks so much for this! I'm no expert on electrical so it's hard to explain some things, I know how to use them, but not always the principal behind them.
Just go my harness today, they sent me the same harness as you or very close. I have the wrong injector plug and the o2 sensor connector is wrong and the maf connector is wrong. Did your harness not have a oil pressure sensor?
I no longer have that vehicle so I can't verify it. I honestly would return it. I've since started using lsxspecialties.com for my LS harnesses. They will make you exactly what you need for a good price. Mention me to them if you do go that route.
I did the same thing you did splice the wire and make a jumper ! however my fuel pump relay clicks on then 5 seconds later it clicks off? is it supposed to do that ? I'm doing a 1994 chevy c1500 OBS with a 5.3 and a stand alone ebay harness... that's where I'm at so far
Okay so I just found out I got Power to fuel pump when cranking over the engine ! now but my question is will the fuel pump relay stay on after truck starts ? I guess I'm gonna have to try to start it next week and see what happens Lol
You can test this buy just using the key. All the key does is click from on to cranking then back to on. So as long as it remains on through those steps there shouldn't be any issue
@@JovaniDanteGriego Ok yeah everything is correct now thanks to your video! The Truck starts and runs fine! this is awesome ! The Chinese Harness works great ! No problem now! thats funny i was worried not now.........
Okay so my Dads 5.3 in 1994 Chevy is almost done its starts and runs has a new 4l60e without neutral safe switch because of the B and M shifter and doesn't really go forward to well in drive or any gear??? any Ideas ?
@@antoniokrider4118 I'm really not sure without seeing the car man. The LS harness needs 12v constant, ground and switched ignition. You can easily find which wires of your car do that by using a test light and
Had any issues with the MAF plug? Mine was not wired correctly. I rewired and MAF is showing voltage but the IAT is not registering, verified in VCM scanner with HP Tuners. This is on a 5 pin MAF. Still a bargain for this harness
@@RICARDOlOPEZ-hj8oc check your grounds. The stock harness is very well built with good strand wire. The cheaper one obviously isn't as high quality. So a ground issue may not be as prevalent using the stock harness. But can show using the cheaper wiring. If that doesn't work send it back. Alot of people aren't having as good of luck they may be getting made in a different factory, etc. LSX specialties is a place to get good quality harness for not too much more. Tell them I sent you
Do you know if the 4l80 and 4l60 connectors are the same? And is there anything I would have to do in the ecu when switch to 4l80 with an ecu that came on a 4l60 truck?
I'm pretty sure they are the same plugs but the pinning of the wires is different on the plug. If you do a search on 4l60 to 4l80 swap you should get some info there's also some programming in the ecu but not sure exactly since I haven't done one yet
@@JovaniDanteGriego thanks for the info I need a 4l80 to adapt to my np205. But I got a truck with a 5.3 and 4l60 for a price I couldn’t say no to. I will definitely look into it more.
Hey man I been wanting to swap my 2016 Silverado to the gen 4 5.3 it’s a 4.3 v6 so I was wondering what all I needed to change I’ve learning a lot from you but im just unsure what all I need to do
I have a similar engine ls3, I did the electrics as you have in the video. We programmed the computer and turned off the "vats system". Unfortunately, the engine did not start. High voltage comes to the spark plugs, but no impulse comes to the injectors. Maybe you can advise me what could be the reason. Diagnostics shows me the error P0315. The sensor is working. Thank you very much in advance
Question??? What about o2 sensors....? I bought new o2 sensors and it throwing "no o2 sensors activity".. is that short in eBay harness or something else? ..any info is helping....thxs
MY O2 sensors aren't reading! And the wire colors do not match what the instructions say. I have no tan wire. Purple pink black white w/red tracer. And I ordered the O2 sensors the instruction manual says to use. Anyone else had this issue? Also there is 12v on my tach wire!!!
Mire tu video y me atreví a hacerle un swap 5.3 a mi c10 85 todo esta conectado en orden pero no enciende el motor pensamos que la ecm no quedo flasheada o algún cable falte por conectar
So I purchased one of these harnesses myself, all grounds are good, connections etc, it seems like the passenger side is only running, the header gets hot but driver side doesn’t, and it’s letting out an extreme backfire through the driver side. Did a compression test, all cylinders were in range, I’m getting fuel and fire but it’s just so strange.
Thanks for the great video Jovani, I have the China CNCH-3250 harness for my LQ4 swap and it works 100%, but there's something that I can't wrap my head around. Everyone mentions connecting both positive lugs onto the + starter terminal. My harness came with a large and small ring lug in the lead that goes to the starter, so I connected the large ring to the starter positive (batt+) and the smaller ring to starter solenoid trigger. That small ring is wired directly to the starter relay in the CNCH fusebox that came with the harness (I traced it back), so it makes sense that you are supposed to connect your old starter wire from your key to that relay, and then that triggers the starter, or am I missing something here?
I think typically in older vehicles there is a wire going from the key switch directly to the starter. I can't remember now but I believe both should go to the positive side of the starter. That one going to the solenoid would only get power when it's cranking. But maybe they changed the wiring on it. I've heard some of the newer ones just don't work so it could be a manufacturing thing
I’m using a standalone harness for an ls1 and I can’t get spark. I have rpm signal, injector signal but no spark to start the engine. Anyone had an issue like this? Also, there is ground and positive at the coil harness as well as constant 12v on the pink wire on the coil harness. I’m at a loss right now. Any help is appreciated!
@@javfernandez4695 I'd say check grounds, once I had to rewire the ground in a cheap harness, there's differences in some setups for o2 sensors and it can effect the way things are grounded. Sometimes it's best to add your own ground
The big ground near the cam sensor is in and so is the one for the ecu, the two red wires with the ring terminals are on battery posititive. I can get the engine to turn over, activate fuel pump and make the injectors spray but I can’t for the life of me get any spark.
@@isiahmoore988 I sold that truck but I've been using these harnesses since. I haven't had much issues. Just make sure you scan for all data afterward, for example make sure your oxygen sensors work, make sure your maf is showing voltage etc
@@Romi.Frentescu ehh it's just cheap Chinese stuff. As long as you can get it going it's worth the money. If you can I reccomend returning it and getting one from lsxspecialties
There are power wires in that trans plug, but not sure which ones and they should be powered through the harness, pink wires are usually 12v switched and orange is usually 12v constant
@@JovaniDanteGriego thanks for the reply! Good to know, and about the oil pressure sensor it’s behind the intake manifold. The oil level sensor on the pan didn’t come with the kit either, I’m guessing it’s also not needed?
@@johnsepulveda650 yea I don't remember if mine had a oil pressure sensor. Any sensor can be easily added though, just buy the ECU pins and the right gauge wire, and run it to the appropriate pins on the ECU
![LS Swap VATS removal using free programs PCM Hammer & Universal Patcher!!!!! [Full Tutorial] Ep.#1](http://i.ytimg.com/vi/5WlhOXcVqTI/mqdefault.jpg)
Oh man i was stressing wiring this harness in after all the plug and play stuff was done. You made me feel much better and confident thank you i have the same harness.nice tip with the fuel pump and wire to starter
You made me feel so good on running my fuel pump wire was so confused on what to do subscribed!!!!!!!
Thanks glad I can help!
I have a quick question im installing a 5.3 lm7 and the the donor 4l60 transmission came out of a 06 chevy tahoe but what i notice is that it was a neutral safety switch and my hardness doesn’t have a connection for it what should i do there’s nothing in TH-cam that talks about it
Get it turned off when tuned
Awesome video. Just received my eBay harness for my 72 Chevy c10 swap. Thank you so much we have the same harness
Thanks for watching!
Thank you so much it helped me out a lot im a starter in this and you cleared a lot in your vidieo. God bless
Thanks I’ve been looking all over for a video like this, I’m definitely subscribing your great at explaining stuff 👍🏾👍🏾👍🏾👍🏾
Thanks!
Hey brother the ebay Ls swap wire harness is good
Thx u for the good info,? I c the green data wire to the ecm ,?But where is the white wire going coming out of the fuse block next to it ,is that the tach wire,where does it run and what is it 's function
Tach is only for if you are using a aftermarket tach gauge
So I can use both leads for the +12v consent and +12v key from the starter ?
How many amps will the 12 v key use?
I have a question about the two starter wires? On e I put them on my starter with the battery wire...do I have to install my cars old starter wires also???
You need a ignition switch wire. On your cars wires its the one that goes from my your key to your starter. Usually purple
Keep up with your vids ! I learned a lot and you got great content !
Hey thanks I appreciate that!
Thank you brother for the info I was going crazy
where does the wire for the distributor come from? Awesome video, man!
It comes from the firewall plug into the fuse box
@@JovaniDanteGriego I'm with ya, I'ma run me a momentary switch from somewhere else so nobody can steal it, truck had an electrical fire before I got it and the left side of the firewall plug isnt there, I appreciate you getting back with me so fast, you rock, bro, you're just flying around saving everybody's day, ain't ya? if you don't have a cape yet, you oughta go get one! (just don't really try to fly)
Thank you for the informative video. It helped a lot. I have a stock 1978 Silverado, putting in 2000 5.3 vortex in it. What is the easiest way to run an inline fuel system using the stock tank? My intake has supply and return line. Thanks for the help.
@@markcagle4827 you can use an external walbro pump gs323 I think is what it's called if I remember.
@@JovaniDanteGriego ok thank you. I couldn’t find that particular model but will continue looking. Will it work connecting the pump to the external port of the sending unit sticking out of the tank? or do I need to get another tank? Or would it work if I attach a pump to the sending unit that’s inside the tank?
@markcagle4827 it should work. Just mount the pump lower than the tank www.highflowfuel.com/genuine-walbro-ti-255lph-universal-external-inline-pump-wal-gsl392/?sku=WAL-GSL392-939-8AN6AN&gad_source=1&gclid=CjwKCAjw_Na1BhAlEiwAM-dm7GOdznatW3pRTXub87d2gxz6xnixbjh9IPZdI7vrX_y9J5QTsxpzBBoCvnwQAvD_BwE
Since it's a square body, check out my Holley sniper efi on my dually, you can get a efi tank for these trucks for like $100 bucks. 87 r10 efi tank, with the 87 sending unit. Then all you have to do is get your self a fuel pump for a 1997 c3500 and mount that in the sending unit
@@JovaniDanteGriego Thank you. I like that idea. I was going to have to change the tank, rust in it. Only thing I’m confused about is the 1997 c3500 pump. Is it because of the psi it produces?
My O 2 sensors do not match the harness. Will the engine start without the O2 sensors plugged in. Really enjoyed your video.
@@davidpate7807 yes it will start, you can get O2 sensor adapters on Amazon you just need to know what your sensors look like, or even better just get the right sensors
Great information here thanks. I’m trying to tie in the park neutral safety switch that came on the transmission. I managed to find wiring diagrams however there is one connection I’m not sure about. It’s the park/neutral position. One of the wires goes to the starter relay. The other goes to the power train interface module (PIM). The PIM in turn has a wire to pin 58 on the C1 connector of the ECU. Have you had any experience with this. What exactly is the PIM as I don’t have it. Do I need it to make the park neutral safety switch work?
I have not messed with this, so let me look into it, I've usually just tuned the trans to park/neutral so it doesn't care about the neutral safety but I will see which wire is needed for you
Fire video my boy 10/10
Nice you explains very good thank you
That 12v wire you had to relocate to the distributor. is that ecu wire supposed to be consent? Could you hook it direct to the battery with those other ecu 12 v wires, that you had all them originally connected to gether?
No you don't want it hooked up to battery you want it to be ignition. If you hook it up to battery it won't turn off with the key
So 2 ring wires and positive battery post wires all go on one side of the starter and the small red signal wire goes to the crank position on the back of the key switch and that’s it for wiring the starter?
The small post on the starter is the wire from the back of the key.
Hi In the "Under dash wires bundled together" I have a pink wire but there is no mention of what to do with it, normally pink is igntion.
Could it have fallen out from the OBD2 port?
@@JovaniDanteGriego . Hi no that still has its pink wire. I watched a few videos and it seen the pink wire in other looms, but can't see where it should go. Ls1 now in a 56 chev. Car running great but trans in limp mode and was thinking this pink wire maybe the issue. It doesn't have 12v on it already.
Hi amigo thanks for your video i have a question i order the same harness but the one i get the the MAF is diferent my donor vehicule the MAF sensor is 5 pins and one i get is just 3 pin and a extra separate conector with 2 pins how you make yours to work.... thank you
The 2 pin are for the IAT. You can buy a 5 pin maf pigtail on eBay just make sure your plugs are all the same. I did the same on mine
@@JovaniDanteGriego do you have the part number please and thanks
Look up LS1 3 Wire To LS2 LS6 LQ4 Vortec 5 Wire MAF / IAT Sensor Adapter Wiring Harness on eBay.
@@simonsautorepair8082 but verify it's the same connectors
So I’m ls swapping a 1935 hudson it’s a shell the only wires in it are the eBay ls harness. I’m trying to wire it to start I have a good battery and I’m sure of that but when I crank it drops from 12 to bellow 9. the way I have it wired is the red wire to the relay is wired straight to the battery and I have no spark I am at a loss. I’ve checked grounds 100 times cleaned everything.
Go get your self a ignition switch from AutoZone or O'Reilly's.
Now run a wire from the start terminal to the little starter post.
Run yourself a wire from the battery to the battery terminal
Now run a wire from the ign post to the ign wire on the harness.
Run the 2 red wires on the harness to the starter battery post.
1 ground by the ECU 1 behind the head.
That should be everything you need
@@JovaniDanteGriego hey thanks for responding so fast I hooked it up just how you said but it is still dropping from 12 to 9 no spark. I’m willing to try anything if you have ideas.
@@hudsonbiancaniello4326 message me on insta or Facebook, I need more info and pictures @jovanidante on IG or find my page on facebook
For the under dash wire harness could I tap in to my stock harness or whatever it goes to? Or is there a module/box I need to get to be able to connect them? Also how do I get power to my ignition switch? Is it the red loose wire that came close to the relays? I have seen a couple of videos but found yours more informative. Thank you
It depends on what car your using. This harness doesn't need to connect to your ignition switch. It just needs a power wire that's on when cranking.
Your ignition switch should already be wired or correctly before installing this harness
@@JovaniDanteGriego I’m doing it on a 96 Chevy that was a v6. I pulled the engine harness out and motor and put a 04 5.3 in now I’m just stuck with getting power to the switch to make it work
@@DanielRodriguez-tn9xj you'll need a diagram but most switches just get a hot from the pattern on one of the terminals and that's all it needs
sir where does the distributor wire go to? To the battery starter or where I hope you see this I need your help thanks
The wire that originally went to the distributor BAT POST (IGN) Will connect to the LS harness IGN wire. I think it's pink.
Is there a way to trick the vats into thinking it’s getting the right voltage to the ecu without having to get the computer flashed?
There is using some resistors I think but I'm not sure what's required
I need to know what your egi plug look like and what you tide it in to
What is egi?
little bit confused do i run my 12 volt key on to the ecu relay or does it connect to the starter than to the relay?
@@hihi-rf3fh there should be 2 red 12v constant wires with ring terminals. Those go to starter. The other wire (pink I think) goes to a ignition source. So on with key on and while cranking
@@JovaniDanteGriegooh ok, would i also have to run another wire to the starter solenoid that turns on with the key?
@hihi-rf3fh yes that wore isn't part of the engine harness that's part of the vehicle harness form the ignition switch to the starter
So I built my first LS, I'm looking to put it in my 81 firebird but first I want to start it on a stand. How do I get the starter to start if both of those wires go on the same post
Get a cheap lawn mower or universal ignition switch, wire it correctly to battery, than run a wire from the ignition switch to the starter solenoid. It works the same way in a car
The reason they did not use the same power wire to feed the ignition relay and fuel pump is because you should have a fused power source for the fuel pump
Real quick note - On the fuel pump relay, you mentioned that the ECU probably sends about 5v to the relay on the green wire so that the relay will send the full 12v out to the fuel pump on the red wire. The idea here is correct but instead of different volts it is amps that are different. The relay's electro-magnet draws a small amp load of current to operate so the green 12v wire is a smaller gauge since it is only handling the small amp load; however, the fuel pump pulls a much larger amp load of 12v power when it is running. Because of this, the 12v red feed wire to the pump must be a larger gauge to handle the larger 12v amp load.
Being able to control devices that draw a lot of current through the use of small gauge switch wires is one of the main uses for relays.
Thanks so much for this! I'm no expert on electrical so it's hard to explain some things, I know how to use them, but not always the principal behind them.
Video helped out tremendously on my k20 swap thank you!
Of course! Thanks for watching
Dude that PDF was gold! Thank you.
No problem!
Just go my harness today, they sent me the same harness as you or very close. I have the wrong injector plug and the o2 sensor connector is wrong and the maf connector is wrong. Did your harness not have a oil pressure sensor?
I no longer have that vehicle so I can't verify it. I honestly would return it. I've since started using lsxspecialties.com for my LS harnesses. They will make you exactly what you need for a good price. Mention me to them if you do go that route.
Thank you for posting and the links!!!
No problem!
What does the ignition wire do does that get connected to distributor
Provides 12v + to the ECU while cranking
I did the same thing you did splice the wire and make a jumper ! however my fuel pump relay clicks on then 5 seconds later it clicks off? is it supposed to do that ? I'm doing a 1994 chevy c1500 OBS with a 5.3 and a stand alone ebay harness... that's where I'm at so far
Okay so I just found out I got Power to fuel pump when cranking over the engine ! now but my question is will the fuel pump relay stay on after truck starts ? I guess I'm gonna have to try to start it next week and see what happens Lol
You can test this buy just using the key. All the key does is click from on to cranking then back to on. So as long as it remains on through those steps there shouldn't be any issue
@@JovaniDanteGriego Ok yeah everything is correct now thanks to your video! The Truck starts and runs fine! this is awesome ! The Chinese Harness works great ! No problem now! thats funny i was worried not now.........
Okay so my Dads 5.3 in 1994 Chevy is almost done its starts and runs has a new 4l60e without neutral safe switch because of the B and M shifter and doesn't really go forward to well in drive or any gear??? any Ideas ?
Trans fluid level good?
@@JovaniDanteGriego Yeah Its full It drives and shifts just seems too slip and not go forward with authority like it should
What year is the 4l60e?
@@JovaniDanteGriego 2002
@@jasonlewers6396 and the harness is the LS harness?
Can you provide info on the 6.0 58x dbw 4l80e ebay harness... instructions. Etc...
I don't have one so unfortunately no. It should be very similar.
Do you have a blueprint on the direct wiring for the fuse block because I have a 1977 Chevy impala and I’m doing my first swap
Elaborate, which fuse block?
Both i need to know wat wires I need to tie in to the fuse block
Distributor power wire works great for IGN. Other than that it's grounds and 12v constant
Ok cool so is it any other wires I need other than the IGN wire. And do I tie in the IGN wire to the skinny red wire on the fuse block
@@antoniokrider4118 I'm really not sure without seeing the car man. The LS harness needs 12v constant, ground and switched ignition. You can easily find which wires of your car do that by using a test light and
Min 14:20 what plug was it??
The distributor power wire from the truck harness
Thay cable runs to where ...lil confuese there ..apreciate ur time
@@eduardovaldez900 wire the distributor power wire to the IGN wire on the LS harness
I bought a harness the same from ebay
But did your harness come a wire plug for the oil pressure switch ?
No it did not I dont think
So then would i just run it like that without the switch actually being plugged up or ?
Had any issues with the MAF plug? Mine was not wired correctly. I rewired and MAF is showing voltage but the IAT is not registering, verified in VCM scanner with HP Tuners. This is on a 5 pin MAF. Still a bargain for this harness
I did had made issues. I couldnt figure out what the maf wiring was supposed to be I had tried multiple ways and never got it
When i turn on my lights fuel pump primes same harness as yours, didnt do this before i had the original harness
When you turn on your lights, your fuel pump primes? There has to be an issue with your wiring, or even your ignition switch
@@JovaniDanteGriego yes, i did put back the old harness and it works fine, dont know what the problem could be
@@RICARDOlOPEZ-hj8oc check your grounds. The stock harness is very well built with good strand wire. The cheaper one obviously isn't as high quality. So a ground issue may not be as prevalent using the stock harness. But can show using the cheaper wiring. If that doesn't work send it back. Alot of people aren't having as good of luck they may be getting made in a different factory, etc. LSX specialties is a place to get good quality harness for not too much more. Tell them I sent you
i got same harness installed but my starter is not engaging
This harness doesn't use a starter wire. That should be coming from your vehicle harness
Do you know if the 4l80 and 4l60 connectors are the same? And is there anything I would have to do in the ecu when switch to 4l80 with an ecu that came on a 4l60 truck?
I'm pretty sure they are the same plugs but the pinning of the wires is different on the plug. If you do a search on 4l60 to 4l80 swap you should get some info there's also some programming in the ecu but not sure exactly since I haven't done one yet
@@JovaniDanteGriego thanks for the info I need a 4l80 to adapt to my np205. But I got a truck with a 5.3 and 4l60 for a price I couldn’t say no to. I will definitely look into it more.
@@derickstarr3270 it's definitely been done before the infos out there, a good place is the sloppy mechanics Facebook page
Which wire is the vss+ signal wire. Underdash.
Hey man I been wanting to swap my 2016 Silverado to the gen 4 5.3 it’s a 4.3 v6 so I was wondering what all I needed to change I’ve learning a lot from you but im just unsure what all I need to do
I honestly think the harnesses and ecus are identical but don't quote me. You would just have to reprogram the ecu with a 5.3 flash
@@JovaniDanteGriego good to know if so that’ll save me a lot of time 😳
What about the oil pressure sensor? Mine doesn't have a plug for it?
Not needed
I just bought one off eBay for my 06 Impala SS I hope this is compatible
Hmm. Well this is a standalone harness. Yours is a factory harness. So it's not going to tie into the factory fuse box at all
@@JovaniDanteGriegooh ok should I cancel this order and look up factory harnesses?
I have no idea what you are trying to do. But this harness probably ain't it
Wow!
This was great! Thank you
Thanks for watching!
Can post a link to which harness you ordered? I have a 5.3 drive by wire with a 4l60 but not sure which harness to order.
Are you going to stay drive by wire?
@@JovaniDanteGriego yes I am.
@@chriskidd4941 let me do some research
Great vid man this helped so much!
Thanks glad it helped!
What can u say about the quality on the actual wires of the harness?
They are average. About 18 gauge. Nothing fancy
I have a similar engine ls3, I did the electrics as you have in the video. We programmed the computer and turned off the "vats system". Unfortunately, the engine did not start. High voltage comes to the spark plugs, but no impulse comes to the injectors. Maybe you can advise me what could be the reason. Diagnostics shows me the error P0315. The sensor is working. Thank you very much in advance
Which harness are you using? Can you test continuity from the crank sensor to the corresponding ecu pins
Question??? What about o2 sensors....? I bought new o2 sensors and it throwing "no o2 sensors activity".. is that short in eBay harness or something else? ..any info is helping....thxs
You only need the front two the rear two will be tuned out
@@alphathefirstone1222 Are they genuine ac Delcos?
@@JovaniDanteGriego no bought from coparts.. I see where your going...
@@JovaniDanteGriego also they graph on the scanner...so I'm going to do a short test in the harness...
I’m having the same problem with my o2 sensor did u fix yours?
MY O2 sensors aren't reading! And the wire colors do not match what the instructions say. I have no tan wire. Purple pink black white w/red tracer. And I ordered the O2 sensors the instruction manual says to use. Anyone else had this issue? Also there is 12v on my tach wire!!!
Can anyone tell me what all the under dash wiring group of wires are found tach signal but don't know what all the others do
Check the description
Mire tu video y me atreví a hacerle un swap 5.3 a mi c10 85 todo esta conectado en orden pero no enciende el motor pensamos que la ecm no quedo flasheada o algún cable falte por conectar
Aver echale!!! Le souluciomaste?
@@gerardolopez5875 si un pin out de la computadora no estaba conectado
@@gioOfr @ mismo harness? Que este?
@@gerardolopez5875 si igual
@@gioOfr @ yo ordene uno, y estoy perdido en los alambres de los que van conectados al tablero, Esta uno rosado, y no se oara donde ba, no ba ala pcm
Where can I contact you I am having issues figuring out the fuel pump relay stuff
Thanks so much this is a blessing
So I purchased one of these harnesses myself, all grounds are good, connections etc, it seems like the passenger side is only running, the header gets hot but driver side doesn’t, and it’s letting out an extreme backfire through the driver side. Did a compression test, all cylinders were in range, I’m getting fuel and fire but it’s just so strange.
Check power to your coil connector the big white one
Or if you want, return the harness and speak to Andy at lsxspecialties. They are a big more but high quality. Tell him I sent you
@@JovaniDanteGriego sounds good man! Thanks for the advice! I look forward to your videos man!
@@JovaniDanteGriego well man you certainly made my day, I replaced the harness that powers the coils and it fixed it! Thanks a lot brother!!
@@MrGto05 hey man! That's what I'm here for!
Thanks for the great video Jovani, I have the China CNCH-3250 harness for my LQ4 swap and it works 100%, but there's something that I can't wrap my head around. Everyone mentions connecting both positive lugs onto the + starter terminal. My harness came with a large and small ring lug in the lead that goes to the starter, so I connected the large ring to the starter positive (batt+) and the smaller ring to starter solenoid trigger. That small ring is wired directly to the starter relay in the CNCH fusebox that came with the harness (I traced it back), so it makes sense that you are supposed to connect your old starter wire from your key to that relay, and then that triggers the starter, or am I missing something here?
I think typically in older vehicles there is a wire going from the key switch directly to the starter. I can't remember now but I believe both should go to the positive side of the starter. That one going to the solenoid would only get power when it's cranking. But maybe they changed the wiring on it. I've heard some of the newer ones just don't work so it could be a manufacturing thing
I mention you in my last video. Hope that’s ok. :)
any help on obd port not reading?
Power ground and data. Verify power and ground on the plug. And then verify your data is going to the proper pin on your ECU
have constant power to pin 16, grounds to 4&5, and signal to pin 58
Appreciate it great video
dam Jovani i like to see that early model chevy truck come to life is that a 1950
1954! Trying to finish this dang ol square body so I can start on it!
Always great, need to know info. Thanks
Thanks for watching !
What injector adapters did you use
Ebay ones, they should be in that parts list in the description
Excellent content Sir
Thank you!
Do you know what the fuse controls wha
Check the document in the description
Well done video!
Thank you!
would you recommend it?
If you want a super solid harness custom made hit up LSX specialties and let him know I sent you
I’m using a standalone harness for an ls1 and I can’t get spark. I have rpm signal, injector signal but no spark to start the engine. Anyone had an issue like this? Also, there is ground and positive at the coil harness as well as constant 12v on the pink wire on the coil harness. I’m at a loss right now. Any help is appreciated!
@@javfernandez4695 I'd say check grounds, once I had to rewire the ground in a cheap harness, there's differences in some setups for o2 sensors and it can effect the way things are grounded. Sometimes it's best to add your own ground
The big ground near the cam sensor is in and so is the one for the ecu, the two red wires with the ring terminals are on battery posititive. I can get the engine to turn over, activate fuel pump and make the injectors spray but I can’t for the life of me get any spark.
@javfernandez4695 you have vats deleted right?
@@JovaniDanteGriegoyes, idk if it would cut spark though if it was activated. I always thought it would cut injectors from firing if it wasn’t.
@javfernandez4695 you're correct. But just making sure you've done it. It still could be tune related can you pull any codes?
Under dash wiring pinout?
In the description
What wires go to the battery?
The red power wire
Is it still working? Im at the point you were at I want to make sure it’s gonna last lol
@@isiahmoore988 I sold that truck but I've been using these harnesses since. I haven't had much issues. Just make sure you scan for all data afterward, for example make sure your oxygen sensors work, make sure your maf is showing voltage etc
@ thank you I appreciate it greatly!
Good job 👍🏻 👍🏻👍🏻👍🏻👍🏻
Thank you!
Bro my ebay harness came with a weird injector plug what do I need?
Check out the wiring harness guide on my blog to compare pictures to figure out which one you need. Jovanidantegriego.com/blog
Thank you so much. I have stock delphi injectors on my gen3 truck engine and my harness would not plug in I was stuck. Lol
I think the adapter I have on that same site will work
I ordered it. My alternator plug had only 1 wire pinned and the other wire just hangs free any idea they make them like this?
@@Romi.Frentescu ehh it's just cheap Chinese stuff. As long as you can get it going it's worth the money. If you can I reccomend returning it and getting one from lsxspecialties
What’s your website and what’s your location, looking to do a swap
Jovanidantegriego.com
My injectors aren’t working plz help me
@@allenreeves7492 did you delete vats
My transmission isn’t shifting into 3 and 4, is there any wires in the bundle of wires that run to trans that need power?
There are power wires in that trans plug, but not sure which ones and they should be powered through the harness, pink wires are usually 12v switched and orange is usually 12v constant
Sounds like 10% of 4L60E's
Hey guys I’m having an issue where the injectors are getting 6v to the injectors has anyone had this issue
Check your grounds
I went back and cleaned both ground locations
Still nothing
lo estoy instalando en una 55 ford panel
gracias por los tips, aca en mexico estamos jodidos de informacion
De nada compa. Gracias por ver
Thanks man!!!
No problem! Thanks for watching!
My Guy!!
My eBay harness didn’t come with the oil pressure sensor or the evap sensor, what can I do?
You don't use those on a swap. Or at least most people don't. Evap gets deleted usually. Also do you mean oil level sensor? The one on the oil pan?
@@JovaniDanteGriego thanks for the reply! Good to know, and about the oil pressure sensor it’s behind the intake manifold. The oil level sensor on the pan didn’t come with the kit either, I’m guessing it’s also not needed?
@@johnsepulveda650 yea I don't remember if mine had a oil pressure sensor. Any sensor can be easily added though, just buy the ECU pins and the right gauge wire, and run it to the appropriate pins on the ECU
@@JovaniDanteGriego thank you very much. Life is a bit easier after watching your video