Alternator Help Please
I hope this question is in the right place, My question is the alternator that I have on my 1937 Chevy has the 1 post for a battery cable, the it has a plug in that has 2 wires, 1 wire is also connected to the alternator the other runs into the wiring harness. I have looked up GM alternators and have found articles that have confused me. all the alternator numbers etc. My question is can I just replace it with a 1 wire only alternator, or do I have to replace it with whats there. I am having some charging issues according to my gauge. It will read 14 + volts at times, but at night with the lights and ac/heat on it will read around 12.5 volts and at idle sometimes will drop to 11 volts and then again it may read 13 volts. It is up and down the scale, I hope all this makes sense, I think this is just a 100 amp unit. Thanks for your time