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04-13-2020, 05:18 PM | #1 |
Registered User
Join Date: Jun 2015
Location: Carlos MN
Posts: 1,943
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Re: LS conversion alternator wiring question
On all the LS swaps I've done I've purchased an aftermarket harness. The aftermarket harness supplied the single wire to the 2002 Camaro type alternator. I use Fbody accessories.
I don't run the large gauge wire to the alternator from the battery. I run it from the large stud on the starter. On the older hot rods I've LS swapped I have replaced the original vehicle wiring harnesses with Painless wiring harnesses because I just don't trust 50 plus year old wiring. Also keep in mind any late model alternator has about 3 times the output of the original alternator. |
04-13-2020, 06:38 PM | #2 | |
Msgt USAF Ret
Join Date: Jan 2005
Location: Kalamazoo, Michigan
Posts: 8,706
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Re: LS conversion alternator wiring question
Quote:
I have heard of the painless harness and it's a good solution. I mentioned in my first post that the later alternators used the single exciter wire. In the stock vehicles with the computers I believe the computers sense the circuit voltage and adjust alternator regulators through the single wire. I wonder when you run the alternator wire to the starter cable, how are the truck circuits fed from there. In the post 76 trucks the starter cable had 2 other large red wires with fusible links connected there and they fed the truck circuits. I assume the Painless harness has that feature.
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VetteVet metallic green 67 stepside 74 corvette convertible 1965 Harley sportster 1995 Harley wide glide Growing old is hell, but it beats the alternative. |
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