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Old 02-27-2010, 05:12 PM   #3
63 & 64 Bowties
and a few others
 
Join Date: Jun 2007
Location: Blue Ridge Mountains of VA
Posts: 5,638
Re: Alternator draining the battery?

I know that a bad diode in an alternator can cause a drain on the battery.
The little wire in the pigtail which is usually white and smaller than the other wire should only be hot when your key is on. The other wire which is usually red, and is larger should be hot all the time. Does that help?
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BlueRidgeMuscleCars.com

“The greatness of a nation and its moral progress can be judged by the way its animals are treated” Gandhi
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