My pump isn't working. I have power going to it but it doesn't run. Its a new camper, a bit over a year old and the only time I used the pump was last fall to winterize it. Any ideas??
A tester can show good voltage, but without amperage it wont run. A poor connection can do that on a/c or d/c. Try hooking the pump to a dumb battery charger that will spark when you strike the leads together (3) , direct to a battery (2) or (1) try ro run another 12v dc appliance on those power wires. Maybe simply ohm the pump (experts chime in here) no resistance, open, bad pump, resistance, bad wire or switch