I have a car alternator that has 3 wires. The colors of the wires are white, black, and yellow. The alternator also has a pin at the bottem that says "Bat" so im guessing that goes to the negative terminal of the battery. I was wondering if some one could please tell me how to wire this alternator up so that when driven by a motor it will charge a 12 volt car battery. If you could please also add a picture of the wireing schematics that would also be very helpfull. I have looked all over the internet and could not find one site that told how to wire up the type of alternator I have.