OK, I think I have a problem... Got the trust meter out last night and with the key in the run position without the motor running I have 12 volts on both field wires on the alternator. If I unplug either field wire, I still have 12v on both terminals. Is this right? I started the car and using a screwdriver, it is "magnetic" near the bearing on the back of the alternator. Is my alternator shorted?