Please help Me.."Overcharging"?

Okay, this was their fault, and mine.
I took the alternator back. They tested it, and he said it was fine! Okay, but wait!
He only hooked to the nut, and one male spade. He didn't use the other one. "The one I added".
I told him I had to use both spades, since my VR had two wires coming from them and both hooked to the alternator.
Since I added the extra brush to the one that was empty. I was doubling my voltage. With the extra brush that the alternator didn't want.
WRONG ALTERNATOR
He ordered me the right one that comes with TWO male spades for the way my VR hooks to it.
I hope this all made sense. Sorry for the confusion. I was doubling my voltage by adding the other brush where there wasn't one from the factory on this alt they gave me.
Where is the ground from the motor to frame suppose to be?