Alternator wiring
02-21-2013, 01:11 AM
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Alternator wiring Hey guys I am in the process of installing a 2002 5.7 fbody engine and 4l60e into my 1980 camaro.I am missing the fbody alternator. After doing a lot of research i see I can install a 2003 5.3 alternator but I am not sure on how to wire the truck alternator since the fbody harness is only a 1 wire setup. Anybody here know how? thanks
02-21-2013, 09:06 AM
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I wired mine as follows: brown wire ( teminal b ) goes to dash indicator of car. Gray wire ( terminal c ) goes to switched 12+. I have not fired the car up yet, but I got this info off of a forum and also confirmed it with alldata. Originally in the donor vehicle the gray wire goes to a pcm regulated supply so it varies the voltage to control the output of the alternator. I have heard from some that you may need a resistor inline to this wire to get it to charge at max current
02-21-2013, 09:20 AM
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Your new standalone harness if that is what you have should have the plug for the alternator.The new pcm controls the alternator charging.On my 1992 truck i had a one wire setup so i just eliminated that wire and i connected the orignal truck alternator red wire to the post of the new truck alternator and my gauge works.
