Re: Bad Alternator, Batteries
^ That is a dead on accurate statement. a diode is designed to only allow the current to flow in one direction. If the diode is open then current can flow both ways, like toms said, current is back flowing through the alternator windings to field(ground). That is what killed the batteries. New alternator and charge up both batteries real good and that will solve your problem. DO NOT try to charge the batteries from the alternator when they are that dead. You will most likely burn up the new alternator.
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