I have a fuse in the 12 volt distribution panel in the bedroom but I also have an inline fuse at the pump. In my case the on/off function of the pump is done by multiple momentary switches that closes a ground for a latching device that turns the pump on and off BUT I also have a relay in the circuit the provides higher amperage feed to the pump.
So either of the fuses could be bad, the latching device could be bad, or the relay. Need a tester and test power at the pump.
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Jim J
2002 Monaco Windsor 38 PKD Cummins ISC 350 8.3L
2005 Jeep Grand Cherokee w/5.7 Hemi
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