Interior and exterior lighting

Question

Recently the running lights, the tail lights and the interior lights in the living room slide all quit working at the same time. These circuits don't seem to be related to each other or use the same fuse. So what is the common ingredient? The fuses appear good. Do any of you know where I ought to start looking for the problem and cure?

bb_tx · Answer

The tail and running lights are powered by the tow vehicle and the interior lights are powered by the RV, so power does not seem to be the issue. That leaves ground. But doesn’t seem to me like those things would be wired with a common ground. But with these things nothing surprises me.

First I would use a voltmeter to see if there is power at those light fixtures. If there is power, then ground is the most obvious problem. If no power to the fixtures, then it would seem you have two different issues as they use separate power sources.

jrscooby · Answer

Ground issue is a real possibility. Another is damage to a loom, pinched by slide? Chewed by rodents? If you can see the loom that should be EZ to see.

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Interior and exterior lighting

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