Cranks but won't start. Unplug ground at field spade on Alternator and it starts?

67Dart273 said
It would be better to replace those terminals. Some of the supply sources have changed/ dried up so you will have to search. "Packard 56" and various. Be CAREFUL that the terminal has the tension area wrapped around the sides as exactly in your photo. There are some different ones that bend over the top and they will not fit some Mopar connector shells

I know Mattox has done some posts on this.

The other thing is, if you get this finally settled down, working, but still have some voltage drop in the IGN1 "run" circuit, that will cause overcharging as the VR sense will be low

One way around that is to electrically break the "run" IGN1 coming out into the bay, use the end from the switch to fire a relay, and supply the relay contact power from say, the starter relay big stud, and then put all the underhood "run" loads on the switched contact.

After cleaning firewall terminals, only red female battery terminal was removed and wire brushed, car started even though battery had not been on charger for two days at 12.7 volts. Haven't checked Ign 2 volt drop yet but seems to consistently start without putting battery on charger. Drove car around for 40 minutes Anp Meter stable slight charge but needle on white middle mark. After drive battery was 15.2 volts engine running before I shut engine off. Alternator stud is 15.4 volts and if I unplug VR it goes down to battery voltage.

With ballast and Unilite unplugged I got .9 volt drop at Ign 1 at the VR. So I have to go work on that bad connection issue now. Until I can find fix the voltage drop problems car isn't fixed even though it starts and runs now.