Question about 1989 Buick Regal
Where are the electrical relays located on the car?
Most likely the diode from the alternator is leaks draining the battery. If you believe your battery is good: 1- Disconnect negative cable from the battery over night to see how weak it is in the next morning. If it is bad then it is the battery no other thing. 2- If it is good, take off wires from the alternator for a night, next day battery is still good then there is a problem with the alternator diode. Hope this can help.
Posted on Nov 19, 2009
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Posted on Jan 02, 2017
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