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Old 04-13-2019, 06:53 PM   #1
Brand: Thor Motor Coach
Model: Challenger 37LX
State: Texas
Posts: 55
THOR #1403
3 Electrical lights go out in Unison

We have a 2015 Thor Challenger LX. We have the 4 bedroom lights that start flicking shortly after they are turned on. Not sure if they are just starting to go out or if their is something else causing it. It started off sometime ago with just one flicking but now all 4 are. That is a separate issue I think from my main one below

OK aside from that my main concern is the 2 ceiling lights outside the mid bathroom and the w/d closet will go off along with the vent fan in the middle of the MH, along the over the kitchen sink light and the outside door/porch light.

All 4 will go out together then eventually will all come back on at the same time after days or weeks.

So I am confused as to why they are all in unison. Why they go out then come back on. Some times if I leave the 2 ceiling lights switch on we will see them at times start to come back on but dim other times they just come on full bright and again the the other 3 will also be working

The fact they all go out together and come back on together and stay off for weeks is what is most strange to me

The other 8 ceiling lights are never involved with any issues.

The circuit breakers never trip, the fuses are for left side right side, and bedroom, and so I do not see any common link between those four electrical spots

Any ideas how to figure out what is causing this?

We are full timers so leaving it with some repair shop is not the ideal first choice

Pops R
2015 Thor Challenger
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Old 04-13-2019, 07:07 PM   #2
Senior Member
Miramar Owner's Avatar
Brand: Thor Motor Coach
Model: Miramar 34.4
State: Iowa
Posts: 663
THOR #4488
I had a similar issue with some ceiling lights. Turned out to be a 12 volt fuse that had vibrated loose. I just opened the panel that houses all the fuses (in the front of the bed in my coach) and gently pressed each fuse to make sure they were fully seated. No more flickering lights.

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Old 04-14-2019, 12:42 AM   #3
Senior Member
Hooligan2's Avatar
Brand: Thor Motor Coach
Model: 2016 Siesta Sprinter 24ST
State: Florida
Posts: 321
THOR #2812
Apparently you have a loose connection in a wiring string. In this diagram, (generic, not your RV) a loose connection at "C" could cause bedroom and bath lights and fans to be intermittent. Loose connections usually get hot and so it's something that should be followed up.
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