Brushes are shorted to ground.

Well I picked up a new reman alternator and all is good. I now have 2 cores to play with and learn on. I will have at least 1 good core when I am done! I think the reason it was charging at 16+ with that plug off was that it was not all the way off. I think the voltage reference wire was disconnected but the other wire was making a connection. The factory tin retaining clip is missing, so I ty-wrapped it in place.

Cley