Mine is wired just like you showed but I get no output from the alternator. Confirmed my factory yellow is constant 12vdc and the green is 12vdc with the key on. I was convinced the alternator was bad so LMR has replaced it twice now but even the third one still isn't working. I'm at a total loss.
Nice job man!! I just did this about 2 weeks ago it was super easy! And my alternator was failing anyway I had 11 volts at idle and the car wanted to die now with my 3g I’m sitting at 14.7 with headlights and blower motor on full! But definitely a must do mod for anyone with a fox!
Great video well explained and get rid of those 2 alternater wires with the heavy duty one. My 90 ssp is running great and lightbar is doing good!!! Thanks for help
@@Mustang-Geek France my friend ;) i own a Mustang GT 1990 from last june, sadly accidented so i have job to do, and more difficult to have paper to drive in France :/ i have an IROC too ;)
Sorry. After running the new 3g wire did you remove the factory charging wire from the coil? Can’t see in the video if old wire is attached or not. Thank you.👍
Do you take off the wiring connector for the original alternator wiring at the solenoid if you use the 4 gauge wire? It’s not shared with anything else at any point is it? Thanks in advance.
That's a really good question. I honestly can't remember! I think the wiring is all tied together, so I just taped off the old wire at the alternator end. I could take a look when I get a chance...
Great vid. I'm curious to know what you saw on your batt gauge once you installed the higher amp alternator. Also do you see the batt gauge on the dash dip when you load up the electrical system by A/C or high fan use? Thanks
This video helped my alot installing the alternator but my car wouldnt start, the dash wouldnt come on. Im not sure where I messed up. Before I put the new alternator I was able to start it without the alternator but now it wouldnt start even with the new alternator. What do you think the problem is?
I think the brackets that clear the alternator are just clearanced like this. Reardless, this bracket is plenty strong even after clearancing. Don't over-think it.
@@Mustang-Geek yeah, you're probably right. The bracket isn't easy to put on either. It's better to just cut a piece out and save $90 and 3 hours of your life.
@@Mustang-Geek I'm in the middle of adding one right now. The new bracket gave me a little trouble but finally went in. If I did it over I'd do it your way. My knees and back hurt man lol
Ok it’s been a year now sinse you do that shotty but connector wiring. Talk about shit coming loose and arcing I’d go back and check those connections I’ll bet their loose if they ain’t your lucky. But I’d go back and resplice them wires there better ways of doing that and won’t come apart either
Hello! A few things: 1) Heat-shrink butt connections are a VERY robust way to make connections. Much better than soldering, as wires tend to crack at the edge of the solder joint. The connections are doing great, but thanks for checking in! 2) It's "butt connector" not "but connector." 3) "Sinse" is misspelled. 4) It's "shoddy", not "shotty." Very different words! 5) The second sentence is a run-on. I'd consider adding a period or exclamation point between "arcing" and "I'd. 6) Add punctuation between "connections" and "I'll." That's another run-on. 7) "those wires" is proper grammar rather than "them wires." 8) Punctuation needed between "wires" and "there." Another run-on. 9) Add punctuation after "either."
Ordered mine yesterday,, just waiting for it to come in..👍👍
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Great and intuitive video. I ran my power wire through the top of the core support on my LTD
I did that too on an earlier fox I had. It's easier to do if you have the bumper cover off.
Mine is wired just like you showed but I get no output from the alternator. Confirmed my factory yellow is constant 12vdc and the green is 12vdc with the key on. I was convinced the alternator was bad so LMR has replaced it twice now but even the third one still isn't working. I'm at a total loss.
That's really weird. Is your engine well grounded to the chassis?
Nice job man!! I just did this about 2 weeks ago it was super easy! And my alternator was failing anyway I had 11 volts at idle and the car wanted to die now with my 3g I’m sitting at 14.7 with headlights and blower motor on full! But definitely a must do mod for anyone with a fox!
Agreed. These alternators are problem solvers!
@John E McDonald No. Standard pulleys.
Awesome! Thanks for a thorough install and explanation on a must-have mod👊🔧
You're welcome!
You did a better video than LMR thank you!!!!
Weird. They should link to it then :)
Lmr needs to get your permission to use this video for the install instead of theirs on the site. Much less rushed and confusing.
They can link to it all they want!
Great video well explained and get rid of those 2 alternater wires with the heavy duty one. My 90 ssp is running great and lightbar is doing good!!! Thanks for help
Right on! Great to hear!
Curious to what you did with wire that was connected twice on plug you cut off where does it connect
I think you're referring to the old power wires. I didn't use those.
I dont have the original alt harness. Would i need to buy a used one or do they sell a 100% new harness that would work?
I'd check with Latemodel Restoration.
Really a nice job ! thanks from the other side of Atlantic ;)
Wow! Where are you from?
@@Mustang-Geek France my friend ;) i own a Mustang GT 1990 from last june, sadly accidented so i have job to do, and more difficult to have paper to drive in France :/ i have an IROC too ;)
@@Macchris58 I see that now. Subscribed!
Its on the way!
just did all the fuel tank related stuff!
What is the wire size on the regulator Instater pigtails? The green and yellow wire?
I don't recall. Maybe 16 gauge? But that's an educated guess.
@@Mustang-Geek kk thank u, because I’m short on wire n need more. I can’t find anything about the wire size either so I’m not sure what to do
my alternator hits on the top as well would it be safe to shave some of that off as well?
Sure, you're not going to hurt anything.
Aren't you supposed to cut the 2 charging wires and put terminals on them and attach them to the post on the alternator?
You could do that as well, but I bypassed the factory wiring completely as described.
@@Mustang-Geek Did you remove the factory charge connection from the coil?
@@suebrown7760 Sorry, I don't totally understand the question. The video shows exactly what I did...?
Sorry. After running the new 3g wire did you remove the factory charging wire from the coil?
Can’t see in the video if old wire is attached or not. Thank you.👍
@@suebrown7760 Sorry, are you talking about the IGNITION coil or the alternator coil?
Excellent. Thank you for taking the time to create this instruction video, thumbs up from me ! Question, did you remove the old power cable ?
Honestly, I can't remember. I don't have this car anymore, so I can't check :(
Do you take off the wiring connector for the original alternator wiring at the solenoid if you use the 4 gauge wire? It’s not shared with anything else at any point is it? Thanks in advance.
That's a really good question. I honestly can't remember! I think the wiring is all tied together, so I just taped off the old wire at the alternator end. I could take a look when I get a chance...
Do I need to upgrade my ground and battery power wire as well?
That shouldn't be necessary if they are in good condition.
Great vid. I'm curious to know what you saw on your batt gauge once you installed the higher amp alternator. Also do you see the batt gauge on the dash dip when you load up the electrical system by A/C or high fan use?
Thanks
Yes, the gauge still moves around, but the voltage is much stabler!
Hello I have a quick question. What did you guys do with the stock black wire?
Honestly, I don't remember. I think I left it alone since it was bundled with the other wires.
I'd like to get a 3G with a one wire hook up if I could find one.
Good idea. Though, this setup is pretty easy. Just a few more wire connections to make, and it works great!
Any idea what alternator they use for the 3g kit??
Don't know. I assume some type of aftermarket replacement alternator for original 3G applications.
why not hook to battery instead solenoid
You could do that, but I prefer to keep my engine compartment as clean as possible.
@@Mustang-Geek thank you
This video helped my alot installing the alternator but my car wouldnt start, the dash wouldnt come on. Im not sure where I messed up. Before I put the new alternator I was able to start it without the alternator but now it wouldnt start even with the new alternator. What do you think the problem is?
Sorry you're having an issue. Maybe something is shorting to ground?
@@Mustang-Geek Thats what im thinking but I gotta check it out. Thanks for the fast reply though really appreciate it
@@peterpark8012 Let us know what you figure out.
@@Mustang-Geek Will do
Your car is running hot
Yeah, my gauge sender is really off. The engine measures 180 with an IR thermometer.
Ya stock alternator with underdrive pulleys is really bad I need to install a 3-g on my Foxbody 👊🇺🇸👍💪💯
Even with a standard pulley, my alternator didn't work well. This is totally worth the couple hours' of time!
They make brackets to clear the larger alternator, a lot better than cutting and weakening the metal
I think the brackets that clear the alternator are just clearanced like this. Reardless, this bracket is plenty strong even after clearancing. Don't over-think it.
@@Mustang-Geek yeah, you're probably right. The bracket isn't easy to put on either. It's better to just cut a piece out and save $90 and 3 hours of your life.
@@JMac85X The bracket doesn't take much to get off, but clearancing is easy.
@@Mustang-Geek I'm in the middle of adding one right now. The new bracket gave me a little trouble but finally went in. If I did it over I'd do it your way. My knees and back hurt man lol
Ok it’s been a year now sinse you do that shotty but connector wiring. Talk about shit coming loose and arcing I’d go back and check those connections I’ll bet their loose if they ain’t your lucky. But I’d go back and resplice them wires there better ways of doing that and won’t come apart either
Hello! A few things: 1) Heat-shrink butt connections are a VERY robust way to make connections. Much better than soldering, as wires tend to crack at the edge of the solder joint. The connections are doing great, but thanks for checking in! 2) It's "butt connector" not "but connector." 3) "Sinse" is misspelled. 4) It's "shoddy", not "shotty." Very different words! 5) The second sentence is a run-on. I'd consider adding a period or exclamation point between "arcing" and "I'd. 6) Add punctuation between "connections" and "I'll." That's another run-on. 7) "those wires" is proper grammar rather than "them wires." 8) Punctuation needed between "wires" and "there." Another run-on. 9) Add punctuation after "either."
You really need to address the wiring a little better.
Sorry it's not as clear as it could be. Once you get into it, it's pretty straightforward!