Forum Discussion

PatrickFisherPr's avatar
PatrickFisherPr
Explorer
Dec 19, 2015

Drawing more than 12 volts off auxiliary battery

I have a 1984 Toyota Sunrader. Under the hood is an auxiliary battery, which charges off the alternator. The auxiliary battery operates my water pump and the furnace. The furnace requires approx...
Seeking Advice
CavemanCharlie's avatar
CavemanCharlie
Explorer III
Dec 20, 2015
12thgenusa wrote:
Sounds like a bad aux battery.


My first guess too. Have the battery load tested.

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