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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
Old-Biscuit's avatar
Old-Biscuit
Explorer III
Dec 19, 2015
What furnace brand/model do you have?

Most RV furnaces have a DC operating 'range'

Transformer increases DC voltage to 10K for spark ignitor

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