Please help Me.."Overcharging"?

Okay, It got stranger.
I ran two new wires to the VR. The old ones seemed brittle. I put new connectors on, and everything.
Now, it quit charging completely.
I did leave out one thing.
For some reason when I went to pick up my new alternator. I had to remove one of the terminals off of my old alternator and put it in the new one.
I guess that is the brush on the springy thing that comes out.
I don't understand why it was missing one on the new one??
I just removed that old one, and it was not sticking out far enough to touch where it needed too, and also fell apart.
I am going to take it back and have them test it, and I am sure it won't charge. They need to get me another one, and have both new terminals on it, and actually work.
Why it was overcharging...I have no idea....Now....no charging...ugh!