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I forgot to update what was determined; I took the original to diesel doctor and they rebuilt it. Upon installation the Gen light in question lit when the ignition was turned on and went out when the vehicle is running. So far no issues and about 3k miles down the road. So that Amazon sourced...

Yeah, if the new one is good, I'm keeping the old one and will take it to out local rebuilder and have them do it when I can. I figure if one went out, the other probably isnt far behind.

Thanks antennaclimber, I'm tracking somewhat on the set up of Gen 2 now thanks to that article. I did test the voltage when I initially installed the new alternator, I cannot recall what the result was and the new Alt is packaged up and ready to return. When I get the new one, success or not I...

I get the impression you dont believe me; I wouldn't believe me either with how often the wiring gets screwed up on these, that plus my disclaimer that I'm not electircian, but here is the schematic, and this is exactly what I am seeing in my engine bay. You'll note that there is no ground...

Let me try to explain again. Gen 2, the passenger side alternator never had an isolated ground. The isolated ground is on gen 1, the driver's side alternator. The alternator that failed is Gen 2. Everything worked marvelously for 2 years and 10k miles, so it was hooked up correctly.

Hi, the new alternator is the correct part number as the original stock acdelco alternator and has the same terminals etc, the ground was not previously present on gen 2 only on gen 1. Everything was stock and functioning up till this point.

Hi all, new to the forum, though ive been haunting the threads for a long time. The other day when I started my CUCV, the Gen 2 light came on and stayed on for the long drive home. Upon getting home, I tested the current at the back of gen 1(drivers side) and found 12-13volts and tested...