Join Date: Oct 2017
Location: NE Washington
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You're on the right track inspecting all the battery terminals - including the crossover cable. I would check them again just to be sure that one didn't loosen up. A loose cable can cause the alternator to overcharge. Grounds are next. You can also perform a charging system test and have your batteries load tested. If you have a bad battery, replace both at the same time.
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