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Old 09-28-2020, 07:48 PM   #1
kvititoe
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ceiling lights not working

Ceiling lights stop working after a trip home, worked fine while camping.
2016 Keystone sprinter 299RET. Gfci, breakers, fuses all good. the switch is not lighting up but passes a continuity test. Any thoughts?
Can a bad GFCI cause ceiling light and switch failure? all other lights and outlets work.

Any thoughts?
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Old 09-28-2020, 08:37 PM   #2
travelin texans
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NO!
All the lighting is 12 volts! Check fuses, if ok check your batteries. If the batteries are the originals then batteries are 4-5 years old which would be replacement time.
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Old 09-29-2020, 12:50 AM   #3
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Something similar happened to me on my 2005 Skyline TT. It turned out to be a bad inverter. Inverter would still put out 110v but stopped outputting 12v to lights and charging batteries.
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Old 09-29-2020, 04:50 AM   #4
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Do any of the other 12v accessories work? Any change if you're plugged into shore power? Almost sounds like the battery disconnect switch might be in the off position. Easiest to check that first. If there is no 12vdc at the light switch (I'm guessing you checked for power when you checked continuity) then it's a matter of finding the open in the 12vdc circuit. I'd suggest starting at the batteries and meter there for 12v. Then the resettable fuses. Then the 12v input to the fuse panel. Pull the lighting fuse (hope it's marked) an meter it for continuity. If you have power at the panel and the fuse is good then it's back to the light switch again.
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Old 09-29-2020, 06:01 AM   #5
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A little more info would be beneficial. Understand that your trailer has 2 power sources; 12vdc and 120vac. Your lights are 12vdc so your gfci, breakers don't have anything to do with them - they run off the battery(s).

You say "the other lights work". What other lights? Is it only the lights from one switch? All overhead lights? Bathroom? Could possibly be the battery or battery disconnect but it won't just affect the lights from one switch.
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Old 09-29-2020, 07:37 AM   #6
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Good catch Danny. I missed the part about the other lights working. Gotta be the switch or wiring at the 1st light.
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Old 09-29-2020, 07:51 AM   #7
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Quote:
Originally Posted by Rber1234 View Post
Something similar happened to me on my 2005 Skyline TT. It turned out to be a bad inverter. Inverter would still put out 110v but stopped outputting 12v to lights and charging batteries.
An "inverter" provides 120 volt from your 12 volt batteries when 120 volts is unavailable.
A "converter" provides 12 volts & charges your batteries while connected to 120 volts.
Simply put, there are variations of both!
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Old 09-29-2020, 02:07 PM   #8
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Thanks for responding, would other 12v items be effected if the converter was bad?
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Old 09-29-2020, 02:08 PM   #9
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Battery seems fine as well!
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Old 09-29-2020, 02:31 PM   #10
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Quote:
Originally Posted by kvititoe View Post
Battery seems fine as well!

Well, you were asked a bunch of questions that might help track down the issue. How the heck do you know the battery is fine? You ain't got any lights. The lights are 12V and run off the battery... see where this is going. To get some legit help, provide full details. Start by letting folks know if your camper is connected to shore power would be a dandy start. You own a 5 year old camper and the place where the camper was purchased put in the absolute cheapest battery they could. Did you load test it?
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Old 09-29-2020, 09:52 PM   #11
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Quote:
Originally Posted by travelin texans View Post
An "inverter" provides 120 volt from your 12 volt batteries when 120 volts is unavailable.
A "converter" provides 12 volts & charges your batteries while connected to 120 volts.
Simply put, there are variations of both!
Sorry not the inverter it was the power converter that had to be replaced.
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Old 10-01-2020, 06:21 PM   #12
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I have unplugged shore power and other under cabinet lights work, awning light works. Currently plugged in to a 20 amp outlet.
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Old 10-01-2020, 07:36 PM   #13
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Quote:
Originally Posted by kvititoe View Post
I have unplugged shore power and other under cabinet lights work, awning light works. Currently plugged in to a 20 amp outlet.
I think you may be confused. Shore power is when you are connected to a 120v ac source no matter the outlet amperage. When plugged into your tow vehicle that's typically referenced as an "umbilical" or just "7 pin plug". No electrical connection at all is often called "boon docking" or "dry camping" and also implies that there are no water or sewer connections.

So if your lights are working while on shore power and not on battery power alone then the converter is supplying the power and the battery is either defective or disconnected.
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Old 10-02-2020, 05:05 AM   #14
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Sorry, ceiling lights are not working at all. Everything else seems to be fine.
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Old 10-02-2020, 05:28 AM   #15
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First thing I would do is get a test light. Pull the light switch out and test for 12V coming to and going out of the switch.

12V in/ nothing out-most likely the switch
12V in/12V out- not likely a broken wire or loose connection
No 12V in- most likely a short or blown fuse

This is all AFTER you verify 12VDC to the fuse panel.
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Old 10-02-2020, 06:56 AM   #16
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All ceiling lights inop or just some? I had the lights in the slideout quit after a trip - bad connection in the power cable to the slide - i found it after tracing the wiring bundle from the slide to the trailer.
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Old 10-02-2020, 11:08 AM   #17
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My ceiling lights are 12V DC and I can turn ALL on or off using a switch on the light fixture. There is a switch on the wall that turns them on or off but the switch on the fixture needs to be ON for the switch on the wall to control function. We generally only have the overhead light in the kitchen area turned on so the switch just turns that light on and off. The other 3 cabin overheads are turned off at the light fixture and are thus not controlled by the wall switch.
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Old 10-02-2020, 04:04 PM   #18
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OK, this is like pulling teeth.

OP, what we need to know is this: can you confirm that some 12 V lights work, and others do not work? Are all the ones that don't work controlled by one switch, or in one room, or have anything else in common that distinguishes them from the ones that do work? If they are all controlled by one switch, are there any lights that are controlled by that switch that do work while the others don't?
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Old 10-02-2020, 06:16 PM   #19
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All ceiling lights in main cabin are controlled by one switch on the control panel. They do not work and the switch is not lighting up. Under cabinet lights controlled with independent switches on the light work, bedroom lights work. As far as I can tell everything else works.
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Old 10-02-2020, 06:24 PM   #20
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Sounds like a meter will tell you that the switch is bad.
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