ok i need some help guys i put a newer motor in a 46 dodge pickup that has a serpentine belt type alt. i have ben trying to get it to charge with the fire wall type volt reg as you know the volt reg for this type alt is in the control box brain of the truck i grounded one feald and it charges but keeps climing as you rev it i also tryed reg thru the ground side nothing there eather man im stumped need some help please