I am finishing the wiring of my galley and thought it was complete when I had two AC receptacles and a switch for the 12 v pump for the water tank wired up. The back wall was installed andonly then I realized I had not installed the 12 v receptacle.
I checked the group of wires coming up from the false floor that holds all the wires from the Inverter to the various portions of the trailer. in that group I located the black wire which was not hooked up, this would have been the "hot wire" for the receptacle. I had four white wires in that group. None pulled out of the sheath. Although the one which was not hooked up, should have. So, I did not know which was which.
I got out my 12v electric starter and my volt meter. I attached the volt meter red line and also my existing black wire for the receptacle, to the "hot" cable of the electric starter. I then attached solderless connectors to all the white wires and hoped to use the voltmeter to discover which white wire was the correct one to complete that 12 volt circuit. None of these wires solderless connectors, when I touched with the voltmeters' other electrode, moved the gauge at all. The gauge worked when I touched the negative cord of the starter.
I hope I have explained this so you can understand this. Anyway, I who know precious little about electrical wiring and am now really stumped. The elctricians I have spoken too seem to knowa lot about AC electrical problems and virtually nothing about D.C. Hookups. I would really appreciate some correct help on locating which of those four white wires is the correct one tocomplete this circuit so I can have a 12 volt receptacle in my galley.
thanks to youin advance,
Gene S.