How Do You Know If Your Alternator Has A Bad Diode?

How Do You Know If Your Alternator Has A Bad Diode? Checking for a Bad Diode Usually, a bad alternator diode will cause your headlights or instrument panel lights to flicker or dim and, sometimes, drain battery power overnight, or in minutes. Any amount of AC voltage would indicate a bad diode, so you’ll need … Continue reading How Do You Know If Your Alternator Has A Bad Diode?