The truck had a battery in it. It had 2 positive battery terminal cable ends. I think it was changed to negative ground when an alternator was added. I don't think there ever was a positive ground alternator, but don't know enough to say for sure. I hooked up a battery negative ground.
I want to eventually remove the alternator and put in a 12 v generator. I'm going to need the mounting brackets too. The alternator that's in it isn't lined up very well and probably throws belts. The starter shouldn't care about the polarity should it? I believe it would run with either polarity.