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727Designs

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Posts posted by 727Designs

  1. Unhook both batteries and charge them separately then have them tested. Then get a DMM that is capable of measuring amperage draw, put the leads in the amperage draw slots and set it on the amperage draw section, take and put one lead on the positive battery terminal (unhooked from the battery) the other on the positive battery post itself and that will tell you if you have a draw. If you do start pulling fuses till it goes away. I have seen a few newer Mustangs do it because of the factory head unit / cd changer, but since you have no deck that's ruled out. I'd start with anything aftermarket removed one piece at a time.

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