Monitor Circuit Blows Fuse

[jeffk14]

I have a 2008 Palomino Puma travel trailer. The 15A fuse for the monitor circuit blows immediately when inserted. I have 12v to the hot side of the fuse and the load side of the fuse is shorted to ground. I am very familiar with electrical troubleshooting (35-year aircraft mechanic) but without a wiring diagram, I don't know what all is on this particular circuit.

I also have a couple of outside lights not working, the ignitor for the gas water heater will not fire, the water pump will not come on and the light and fan in the range hood is inop. I'm thinking that there is a possibility that all these items might be on the monitor circuit. The monitor panel is completely dead. No lights at all, including the water pump and water heater switch lights. The electric water heater works though.

I've already eliminated the water pump and the monitor panel itself from being the source of the short. By the way, I just bought this camper last week. Thanks!