Bad alternator. Dealer says they removed and replaced defective alternator. When engine was started, they claim new alternator went bad. After days of trouble shooting their determination is there is a wiring problem. Termination plug at the alternator consists of three wires. The first wire is a purple wire that terminates at another termination plug which is plugged into the alternator. The second wire is a red wire that terminates I am not sure where. The third wire is a grey wire that terminates, or originates, I'm not sure where; starter solenoid perhaps? I do read a ground on the grey wire when checked at the termination plug. My primary question is: if I install the new alternator, will it go bad. Ford does not seem to want to answer any of the questions I pose to them with respect to the circuitry that this system is comprised of. Furthermore, would you venture to guess where the grey wire originates from or terminates at. I'm certain, almost certain, the alternator is grounded to the engine block. Battery light is on.
Monday, February 7th, 2011 AT 7:03 PM