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O_Connell's avatar
O_Connell
Explorer
Jun 17, 2013

Lights that do not work

I need some help or at least, some insight into an electrical issue that I have with some lights in my 2004 Fleetwood Excursion Motorhome.

I was replacing the porch light and before it was completed, I disconnected the wires from the bulb holder and saw a bit of "smoke". There was no injury to the fixture wires or the bulb holder. So, I persevered and completed the installation knowing that I would probably have to replace the fuse. The porch light would not come on confirming my thoughts. I then noticed that the entry ceiling lights were out as well. Then I noticed that the front half of the ceiling lights in the kitchen were also out. All other inside lights as well as headlights, running lights, etc. work as expected.

Understanding the seriousness of the issue, I embarked on finding the culprit fuse that I must have blown. Well, this coach has 35+ fuses in 4 locations and none of them is blown. I have checked each one twice with a meter.

So, what am I missing? Could I have a short that is not blowing a fuse? Does anyone with an older Fleetwood Discovery, Providence or Excursion or anyone else have any ideas. I am stumped.

Any help would be greatly appreciated. Thanks!

7 Replies

  • I finally found the fuse and all of the lights works!!!! It was in a 5th fuse box that is located on the wall under the bed right next to the 110 a/c circuit breakers. I had completely forgotten that it was there.

    Thanks for all of the responses......Dave
  • What is interesting is that the three areas of lights that do not work are on different 12 volt switches. Two are near each other by the entry door and one is at the other end of the kitchen near the bathroom.

    I do think that I will use a long wire to connect one of the fixtures to a known good 12 volt source to see if the circuit is open due to a cut or burned wire.

    Many thanks for your help.....
  • O'Connell wrote:
    ...what am I missing? Could I have a short that is not blowing a fuse...


    No, a short will always burn a fuse if there is one.

    You caused a short when you grounded a live wire.

    Now you have an open circuit. Keep looking, you either burned a fuse, a wire, or a connector.
  • Have you checked the fuses at the converter location? Most likely the lights in question are powered by the converter. Also it is possible that when you saw the smoke that one of the connections or wires might have 'burned up" with out blowing a fuse.

    You might try this. Go to one of the lights that is out and pull fixture so that you have access to wire connections. Then get double long wire and connect it to a known good 12 volt source. Use a fuse or circuit breaker on + wire. Connect one wire at a time to fixture +/- wires and see what happens. If lights come, or some in circuit come on. Then you have a bad connection some where. Most likely in fixture closest to converter. If all lights in circuit come on, then problem is most likely at converter.

    I have found that the best way to test 12 volt fuses is with an "ice pick" type test light and touch each metal contact on fuse to make sure fuse is good.
  • There is a chance that a wire has either been cut or burned through. The fuse could then be replaced but would not blow again if the circuit was in effect open!
    You need to check each and every one of the fixtures and switches that are not working and look for a break in the circuit.
  • GFI is for the A/C circuits. The lights that I am having a problem with are all 12 volt. But, thanks for the reply.