More electrical problems in 345

[pjude]

On a recent trip to the bayou country my water pump stopped. My first thought was that I had blown a 12v fuse. Unable to locate any 12v fuses even after several forum posts I tried to do a little trouble shooting. So here is the problem!I pulled the switch in the bath of the 345 to get access to the 3 prong rear. One wire should be my hot, one my neutral and the third to the water pump. RIGHT?I removed the pump and hooked it diretly to a 12v supply and it worked. When the pump is connected in the coach the hot side of the switch is hot but no power to the pump. I remove the pump and leave the hot and neutral disconnected I do not have a hot at the switch. If I connect the hot and neutral to each other at the pump I have a hot and the switch seems to work properly.
I'm at wits end!

[DaveFL]

My water pump is wired with a second switch in the galley control center, if it had a problem bathroom switch wouldn't work. does the light on the switch light up. if switch lights, check continuity to pump or without meter you can touch positive to pump wire and see if pump runs, if it doesn't check ground at pump.
When you connect hot to neutral at pump you should have blown fuse.