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Old 08-12-2007, 06:57 PM   #21
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Join Date: May 2005
Location: L.B.N.J.U.S.A.
Posts: 1,245
Default Re: GM 3 wire alternator wiring diagram

I used a pretty stout turnbuckle for an alternator mount once. It worked great, had to grind the eyes flat on the mounting faces, and used a jam nut on the righthand thread side.
"So, what do you little maniacs want to do first?"
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Old 01-06-2011, 06:08 PM   #22
Join Date: Jan 2011
Location: Dolan Springs Az
Posts: 2
Default Re: GM 3 wire alternator wiring diagram

Hi Guys, I have a 78 Chevy pickup ,just put in a 97 5.7 vortec, and had a think its a 100 amp alt off a 88 buick century, 3 wire if you only count the wires in the plug on it plus a 10ga.red wire on the back. Now I used the red 12ga wire out of the plugto go to the back connector and the red 10ga wire that was there to start with. The 16ga brown wire in the middle of the plug connected up to the brown wire that was to the original alt plug (the one that was in the truck to start with) Now the last wire in the plug I just taped off did nothing with it. started truck and checked charge with meter an shows charging 14.2 an with every thing on shows 13.6, Maybe I did it right ? Never have been good at the electric on these things ,Can make them run an go fast tho. Thanks for any advice Slimone2
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