I put a new alternator on in October and a new battery in November, have not had any problems till this week . The battery keeps going completely dead, I put another battery in just to see if it was the new battery ,it still did it. I unhooked the alternator and the battery didn't lose its charge, I hooked back up but unpluged the pig tail in the side of the alternator, it didn't lose it charge as soon as I plugged the pigtail back in it started draining battery again. I am not sure what all is powered by the pig tail plug in, but the car runs and all the electrical lights, fans are still working. Any ideas would be appreciated.
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