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Join Date: Aug 2013
Location: San Antonio, TX
Re: Alt warning light wiring w/ AAW Classic Update
Codi - The AAW kit is great quality - all GXL wire both in the engine compartment and in the cabin. I did make some modifications like adding relays for the headlights (it was a head-scratcher with the original RS wiring but it works) and adding a busbar on the firewall (using the starter lug as the main power distribution point bothered me) but it mostly installed as directed. I wouldn't install it without their crimpers; the expense is a little painful but you're making tons of crimps in the engine compartment that will be high-heat, high-strain, relatively high-amperage, and exposed to anything flung up from the road. I soldered and heatshrunk the high-risk ones too.
Chris - I do have the VHX gauges. Does your car run/charge with the brown wire in the dash harness (that would have gone to the alt light) just not hooked up? If so that sounds workable!
Brian - Sorry! I have a 12SI. I know at some point GM added an second ignition path with a resistor to excite the alternator field in case the alt light was burnt out (whenever they switched to internally regulated alternators, I think). I suspect AAW would have built it into the harness so the alt light wire doesn't need to be connected but I haven't seen a really good schematic of the AAW CU harness to confirm it. Just a bit OCD about wiring and hate the idea of doing it wrong when I could get it right with a little advice.
1967 RS driver with a 327/210... but now with an M20, HEI, AAW harness w/ halogens and relays, Dakota Digital, Moto-Lita, TMI interior, and a few other toys
Last edited by Brian_P; Feb 12th, 15 at 08:07 PM.