Hi....
I recently installed a new Lectric Limited wiring harness in my 1960 Corvette. This is an exact duplicate of the original Corvette wiring harness and uses a generator. However 20+ years ago I converted it over to an GM 3 wire alternator (10si) with internal voltage regulator.
Any suggestions on how to wire in the alternator?
Thanks muchly....
Stemmer (Kenmo on Corvetteforum)
I'm not sure exactly what is needed for the C1/C2s.... I've spent the last 15 years with C3s. Kinda lemons to limes (different but both citrus) so maybe this will inspire you.
I'd pass on the 10SI and go with the 88-91 C4's 105 amp unit. The housing is the same 12/6 o'clock positions as on the 10SIs o the C3s (not sure if you need a different housing- but lets assume you don't). You'll need to swap the pulley (they came as serp. belts) and then get a regulator pigtail.
If you have a chassis wiring diagram.... use it for guidance. What I think you'll need to do is to run the charge wire to the large positive pole, run a ground to the chassis (or OEM ground). I'm not sure is you have an idiot light, so I'm not sure what to tell you about keeping it from coming on. I can tell you how to wire it in lieu of the OEM system.
Truly, the C4's alternator is the best charging possible for little money (I was running H4 lamps, TPI, AC, and 400w of stereo power- NEVER dropped below 14v). Go to a stereo/radio store and buy several feet of monster cable and use it as your charge wire running back to the battery.
As for the regulator....using the the positive pole on the alternator as the source, crimp a hoop connector to the regulator's positive lead and snug it down.
In the picture below, you'll see the late model alternator running with a V-belt and a monster charge wire.
