Question about 1986 Buick Regal
Possibly any of the diodes inside the alternator (most likely). In some instances, it could also be the regulator whether it be internal;/integrated to the alternator or external.
Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.
Good luck and kind regards.
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Posted on Jun 13, 2008
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Posted on Jan 02, 2017
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