Coach Lighting Short

[papa45]

Spring Break, last week, the 12V bedroom ceiling lights went out. Fuse is good. Other lights on the same circuit work OK. There is no power to the wall switch. Can't find anything loose on the power panel or converter. I assume something shook loose, but electrical code should not allow any connections that are not located inside an electrical box. I can't guess how the wiring is routed inside the floor and/or walls. Any suggestions?

[papa45]

The RV isn't here right now, but when I was messing with it a couple days ago, it measured something close to 0, less than 0.1V, as I recall.

[westend]

Does your meter measure 0 volts on the switch's supply wire?

[papa45]

Chris, I already tried pulling everything on that circuit, but everything seemed solid. Thanks.

[Chris_Bryant]

If you know which lights are on that circuit, try pulling the closest working fixture to see if there is a loose connection there.

[papa45]

All fuses are good. I even swapped them around to be sure. Wires just disappear down into the wall and into bundles behind the power panel. Nothing is visible in between. No wiring diagram for the coach. I may try to call Fleetwood to see if they can tell me the most likely routing.

[DrewE]

Electrical code rules on connections etc. don't apply to 12V circuits (or, perhaps more precisely, the requirements differ greatly). There's no real danger of electrocution from 12V circuitry, so more leniency is permitted.

Are all your fuses verified as good? If so, it sounds like a matter of tracing wires back, unless you have access to a wiring diagram or similar documentation for your unit.