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Old Jul 28, 2013 | 06:10 PM
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Lightbulb Alternator Question

After doing some more testing in search of my parasitic battery drain, I'm pretty sure that my alternator is the cause and I have a couple of questions.

I put my multimeter between the alternator connection on the fuse block and the charging lead from the alternator, and it showed a 130ma drain; this is with the alternator mounted. When I remove the alternator from it's mount the multimeter shows no drain.

Am I correct in my understanding that there should be no drain whether or not the alternator is mounted, and this is indicative of something inside the alternator, probably a bad diode, grounding out and causing the drain?
 
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Old Jul 28, 2013 | 06:42 PM
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When you removed it from the mount you broke the ground connection.
 
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Old Jul 28, 2013 | 06:47 PM
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Right but the charging lead shouldn't be grounding at all should it?
 
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Old Jul 28, 2013 | 07:43 PM
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Found it, the connection for the small wire to the alternator was damaged. No more drain.
 
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Old Jul 28, 2013 | 07:45 PM
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Yippee skippy!
 
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