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1994 Dodge B250 runs battery down overnight put meter between post and battery pulled all fuses no change black wire fuseable link disconnected kills voltage but van wont start then new battery

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It would seem as though you have a drain somewhere in the electrical system.

A faulty alternator can cause a battery to drain - sometimes - within minutes. It's the rectifier pack - the diodes in the back of the alternator which burn out.

Charge your battery and when parked up, disconnect the connector at the rear of the alternator. If the vehicle cranks ok the next morning you have to suspect the alternator.

If the problem persists you then obviously have a current drain somewhere else. As you have removed the fuses and it made no difference .. this suggest that the drain could be in the instrument cluster/dashboard.

The best option is to visit an auto electrician. He'll be able to identify the cause of the drain within minutes

Posted on Apr 16, 2017


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