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Battery drain? Help!!

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Yeah I think I’m going to pull the alternator again and get it tested somewhere else.

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I had the same symptoms where there was a slow drain on the battery. New Battery, started and ran fine until the truck sat for a couple days and the battery was drained dead.


It drove me nuts until Mike, Hainz got me to trouble shoot all the basics... long story short... the two wires to the alternator got swapped when I chucked my stock L16 35amp externally regulated alternator, with a 60amp internally regulated unit from a 720. A clue if I remember right... no alternator light lit when the ignition was turned on. After the alternator light on the dash works right. Truck can sit for weeks now even though the clock on my CD player draws current.

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