Fisher
Old Guy with a Cool car.
71 Duster 20,000 mile car, was 6 cyl now 383 with electronic ignition conversion . Chrome box from Mancini. Car starts and runs great. The Alternator came from Source 440 its one of there 50 amp deals, dual field wires etc. Ok so the old alt was a dual field wire alt as well with th batt term. This new alt also shoots sparks out from the mounting brackets when you rev the car up. LOL . The battery is sitting at 12.3 Volts and there is 30 volts to ground coming out of the alt. The odd thing here is with a volt meter, and only the neg wire hooked up to the battery, i can go from the pos terminal of the batterye to any where on the car and get 12.3 volts. except the alt case? Once i connect the po terminal of the battery i get a ground reference from the alt case to pos. That makes no sense at all to me and should not be doing that. I am taking the alt to a local battery starter shop Monday morning to get them to spin it on the machine see what they say. I can see that the 2 field wires go to the sake location on the alt via brushes, so i gather one is for start and the other for run? so it makes no difference where the blue or green wire go there.