How My Racecar Wiring Works...
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- เผยแพร่เมื่อ 9 ก.พ. 2025
- Not many people make videos going over how they setup their custom chassis harnesses and custom fuse and relay panels, I figured this video would help others attempting the same job. This took about 3-4 months to understand the cars wiring, and make two successful versions. You guys can leave a comment with any questions OR suggestions on my setup! I also respond to DM on my instagram which is linked below!
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How to make a custom fuse/relay panel:
• How To Build A Custom ...
Please Keep in mind that organization and clean routing is KEY! During the period that I filmed this video I was still adding new wiring and finalizing circuits, looming wires and more. The current setup is a tad different, I've added circuits for more lighting, and even a spare circuit for a water sprayer in the future. The 12-fuse strip was rated for 100 amps. I removed it and ran two 6-fuse strips from the same brand rated to 100 amps each (200amps). I've also added a circuit breaker to the main power cables of the panel for extra safety. This was very easy to do because I stayed organized and labeled everything. Please watch the video below to see the current state of my fuse and relay panel!!
th-cam.com/video/u-QmH3Os9kk/w-d-xo.html
How big is the wire running from switches to panel?
Now this is the video I have been looking for , for sooo long
Glad you found it lol
@@kriswyche going to make a start on my own loom k20 in a chassis isn’t not meant to go in 😂 wish me luck
@@shakiejake k20 is a solid motor. I’ve seen around 2 k swapped s-chassis. It’s a job but it’s possible
Deserve way more views and subs bro! Keep it up!
Thank you!! I just posted a new video driving if you’re interested !!
Nice work. About to start doing my rock crawler and need that inspiration. You could slow down a bit and explain more detail about what and how you are doing. Love to hear it. Thanks.
I’ve explained a little more over the span of my past videos, I tried to just cover the basic concepts that way people can create their own versions instead of making a duplicate because the design all depends on your style, car, and what it will be used for !! I’ve also adjusted and updated some things here and there
Great video. Nice to see how simple wiring can be.
Very simple once you learn the basics !
So incredibly concise this video is going to be so helpful when it comes time to doing mine
Good Luck !! I wish I could make another video explaining more but my dash is already back on
@@kriswyche where do you recommend getting all your wiring supplies? I'm gonna start ordering everything for my turbo e36 harness. I hate how messy my stock has become. (also I'm on a different account lol but same person)
@@Guatemotzin97 I honestly purchase everything from autozone and Amazon. The soldering gun is from harbor freight and I got the wire cutters from Matco. You can purchase literally everything through amazon. I usually go in person for automotive wire since online they have lots of bad brands that use copper coated aluminum instead of pure copper and etc
1st of all this video and editing was dope highly appreciated, 2 I’m very smooth brain when it comes to wiring. I have a universal chassis harness that I was going to use but now I’m not sure after see what you did.
The universal ones work good, the hardest part is making sure you don’t overload amperage. But it’s simple, just throw a bunch of relays and switches together and go haha
Great video, straight to the point with all of it!
Thank you !
Been waiting for this one! Folks still sleeping on VANL.
Matthew Memelo Make sure to shoot me a DM once you get your decals! Shipping is probably slow due to the virus.
@@kriswyche absolutely fam
Nicely done and very well explained. Thanks!
Thank you !!
Great video I was flipping through a few today to get some ideas. I like the breaker but I was thinking I might do a fused distribution block there. I'm trying to clean up the wiring on my ls1 s14.
Yeah the breaker is basically just a big fuse for both the starter/alternator and there’s another one now for the entire fuse panel.
@@kriswyche How many relays do you think is good for running the lights, you don’t need one for each individual function: turns (2), hazards, running, brake, headlights? I figure everything but the headlights are such low amperage I can do just two, one for the rear and one for the headlights(being the ones on and drawing the most). Just a flasher relay in-line with the switch straight to the turns no extra relays
@@baylymiley well I don’t have blinkers or hazards or anything, I have a relay for front headlights and one for rear.
Great video, keep up the good work!!
Thank you dude! Will do!
This was awesome man thanks
Haha no problem !!
sick vid. did i miss the alt wiring? couldnt find it on your channel.
It’s pretty simple, alt has three connections. Power, which is a battery cable run from alt to battery. Ground, which is connected to bare metal in the bay. Lastly is the alt connector . It has two pins, one pin is constant power from battery and the other is a circuit with a light bulb (charging light).
Watch this vid, there should be something helpful in it. th-cam.com/video/LrYDhlx_ZZg/w-d-xo.html
Stupid question I’m sure, but I see one set of fuses. Are those high amp fuses for the relays or are those fuses powering the switches (relay inputs). Where I’m confused (on all videos) is do you need fused power to switches AND fused power to the relay? Thanks for making this video; very helpful!
No question is stupid. The entire switch panel is run off one 7.5amp relay, my switches are ONLY used to activate the relays. Power goes into the switch and through the relay and then to ground (activating it) Since all they do is turn on/flip the relays, the amperage draw is extremely low.
Let’s take the fuel pump for example. The fuse rating for the pump is 15amps. When I hit the fuel pump switch, that switch powers the relay. Then it allows power to go through a 15amp fuse on the fuse strip, then it travels through the relay, and to the distribution block. Then from there the power wire goes to the fuel pump, then it follows the ground wire back to the left side of the fuse strip (ground side). On the top you can see all grounds route there and then I ground it out on a piece of (metal/chassis).
Also if you have Instagram or Snapchat shoot me a message so I can send pictures and videos and we can talk more in depth!! My IG is @kriswyche_ and my Snapchat is @Kwyche24
@@kriswyche thank you so much! I like your elegant solution to power the switches with one fused line. But do most people (keeping it basic for me) power their switch from a separate fuse panel. I see lots of videos on relay panels but they never talk about the source of the switch power. I’m imagining there is a separate fuse panel for that simple switch which ultimately ends up at the relay switch in power correct?
@@KemDIY yes you’re right, all you need is one fused power wire that goes to the switch panel and it’s ready to power anything.
Yooo my brothaaa!!!!
Subscribed!!!
Yooo! Thanks dude! :))
@@kriswyche I'm throwing a MicroSquirt into my FC Rx7 so I saw your fuse panel video ✊🏿
@@dubbleA100 I heard of them, they’re good
How is starter wired up? I’m in the process of building a car with no chassis harness and was wondering how you hook up a push start button
Well you have the starter motor and attached to it is the starter solenoid which is basically just a huge heavy duty relay. The battery cable goes right to that solenoid and then there is one wire that when powered will close the solenoid and crank the starter. Lookup 240sx starter wiring diagram, that should help
In terms of how I did it. I used a multimeter and found out which wires in the ignition barrel (where key goes) are connected when I turn the key all the way. Then I sent power into the barrel, and when the key is fully turned it acts as a switch and power goes into barrel and out to the starter solenoid. Also since I wired my ecu. I tapped the starter solenoid wire and used an inline fuse so ecu can get a start signal.
Hello bro, im from malaysia and this is my first time doing engine sr20det swap into my project car and doing custom wiring like yours . I wish you can help me how to do the ecu wire like yours and what wire to start up the engine . Sorry for my bad english .
Im stuck at the ecu wiring and what wire need to do to start up . I hope you can help me , it will be mean a lot to me bro😭
@@nurhafidziyusraa8224 check the code on the ecu and look up the correct ecu pin out for the code. For example, mine is 62 so I searched “s13 sr20det ecu pinout 62”.
This is the most complicated part of the wiring but it’s not impossible. My current setup has three wires going into the ecu harness. The FIRST one is power to the ecu relay, which splits up throughout the harness and powers almost everything within the engine. The SECOND wire powers the injectors, ignition coils, and I believe something else I need to check. And the THIRD wire is a hot in start wire that provides a start signal when you are cranking the car over. Send me a DM on Instagram, I’ll pull down my old notes from when I first did this and clear it up better!
@@kriswyche thanks bro ! thats helps me a lot bro🤩 , my ecu code is 62 , my engine wiring is the stock one and i have the pinout but dont know which wire i need need to hook up . Can you tell me what is your ig so i can DM you ? What are the three wires that goes to ECU exactly ? I think that will solve my problems .
@@nurhafidziyusraa8224 @kriswyche_ when I get some time I’ll take pics and everything so you can do same thing I did
What size wires did you use?
16 for the most part, just depends on the amp rating. for example the starter solenoid takes a higher amperage so i used 10 awg vs the headlights where i used 16 awg
Will you be putting blinkers?how would you go about it?
I would have to activate it through the lever that connects to the clock spring which I’ve removed both. It’s pretty easy to wire if you keep everything in car. You just need power and the multifunction light switch does the rest. Some time studying the wiring diagram from the service manual and it’s an easy job.
I won’t be adding blinkers, maybe hazards in future but the car is mostly for track. Street drifting was a big goal of mine but not easy where I live, also I wouldn’t post the videos from the street on here if I’m really shredding for obvious reasons haha.
Thanks for the reply. Good job. Hope I could do the same. Hahaha
Bad ass work
Slumped kids thanks bro !!
You did that! Got me thinking
Try it! It was a huge learning experience for me but I enjoyed it and people really appreciate quality wiring work !!
@@kriswyche I really would like to see how you started the engine
@@infamousnova lol I was being funny. Basically Main power, ecu switch, gauge power switch, fuel switch, and then I crank
@@kriswyche with key or switch
@@infamousnova key. the ignition has like 5 wires. Two are for the starter. Basically power goes into ignition barrel on steering column. The key is a big switch. And then the power goes from barrel to starter solenoid to crank the car
May I recommend an FIA killswitch
My actual killswitch is under the passenger seat. I’ve added it since this video. As well as the circuit breaker for starter and alternator. I can pop that open in case of emergency.
@@kriswyche Ah ok. Nice work by the way.
🔥
Got an updated video of this? Going real into depth ?
Or If possible, Could you draw a diagram for me ? I have a KA24DE-T and an Rs enthalpy ECU. So Stock Ecu etc. Depinning and getting the correct voltages confuses me big time and i'd rather not fry my ECU
@@ItsTee01 i did make a video called how i wired my ECU. basically you need to get the pin out of your ecu and find what pins are power and trace them. they usually all go to a big chassis connector. i talk more about it in the “how i wired my ecu” video !
@@kriswyche Yeah, I watched that. I dm'd you on instagram.
What is relay number 7 controlling
it powers the switches and also my gauges iirc
lost,, how do you know how to read the wires??
Not sure what you mean by “read wires”. Do you mean AMP’s ? Let me know dude, here to help as much as I can !!
Cool
Thanks bro, for sure gonna keep my next chassis stock though lol
@@kriswyche stock sucks bro,besides where's the fun in that. I'm gona try, rather it be built than bought...
@@woundedfox5109 I’m probably gonna do a stock 1j, bucket, coilovers, rear suspension arms, aero and that’s it. But I meant stock as in all the wiring and interior mostly. The whole racecar wiring was a jobbbb !! Lol
You have a social media I could contact you on ?
Yea, my IG’s @kris_wyche
Would you be able to custom make this for my car and I’ll buy it from you?
I could make you one but I promise it’s super easy!! There’s also more videos online about this so you can see different perspectives and compare them and see which design you like best! I also included links to some professional companies that make pre-built panels in the video description! Let me know !
Ummm whut? Why is it so confusing?!? 😩
It always seems that way at first but when you really understand the basics and a little more you can trance wires and see the flow a bit better. Wiring is always loooked at as really hard but it’s super easy to learn and understand
@@kriswyche Thank you for the encouragement. I have a clear idea of how I’d like to wire the extra accessories in my car & I feel like I grasp the basics but then I watch these tutorials and they might as well be in Latin. I did see a switch plate kit that came with everything I need, I might attempt it. Or maybe I’ll just stick to Upholstry where it’s just shapes and colors. Lol
@@kriswyche I rewatched your video again and I feel like I absorbed a little bit more this time. And just to clarify, it’s wiring that I find confusing, not this video. Your video is my favorite wiring tutorial so far. I like how you labeled the wires and you have a nice voice and you’re good at explaining it. Thank you!
Yeah it took me a long time to fully understand everything but it was also my first time learning about wires. The main things to know are voltage, amperage, and ohms. Then the main things you’ll use are different size wires (the higher the voltage/amps the bigger the wire), different relays ( 40amp, 80amp, whatever max amperage fits your setup. 40amp is usually always used), and fuses which are basically meant to pop if too much amperage is flowing through them, that way the wire doesn’t heat up and burn.
@@katykab00m it’s more simple than you could imagine, just watch videos and basics of electricity and how relays work and you just about set. I’m school I used to spend lots of time on these electric boards where you create a circuit and feed power and see if it works, there’s probably games online like this. I even had a app where you could build circuits and test them to see if you knew what you were doing !
pretty messy honestly
True true. I could’ve went all out and made it extremely tidy almost like a circuit board but it’s my drift car and my main focus is driving so I made it somewhat neat and moved on. My most recent vid I cleaned it up also !