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DIY alternator test to check for bad diode?

posted by  rstarkie on  Sat Oct 10 10:38 CST 2015
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last visit: Fri Oct 24 10:14 CST 2014
[RELATED]

>Best test to see if a leaky diode is draining the battery is simply checking >DC current between the alt and the battery, with the car shut off. Do it cold >and warm. This will always find out whether the alternator is responsible for >draining a battery, as long as you can catch it when it is happening.

Where would the meter leads be connected to the alternator and battery?

Thanks very much for taking the time to entertain the question and provide input to my ever (however slowly) increasing knowledge of electron flow.

Randy






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