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n4hwl's avatar
n4hwl
Explorer
Oct 14, 2013

need help with left rear tail light

I have a 2004 Phaeton made by Tiffin. My left rear turn signal light is not working. I assumed that the bulb was burnt out. I checked it and the turn signal bulb is fine. I checked and found there is no 12 volt getting to the turn signal fixture when the left signal is activated. Ok Where so I go from here? I thought there was probably a connector that had come loose. I am yet to find a loose connector. Is there a fuse that controls only the left turn signal? The right turn signal is working fine. Any suggestion would be appreciated.

Ken

19 Replies

  • garry1p wrote:
    Is the front turn signal working?

    I ask because there is a flasher module (depending on your chassis) that can go bad both front and rear on the same side will stop working, there are also fuses.

    What chassis do you have?


    I like this question.

    Seems to me that would have been the first thing I would have looked at.
  • Bobbo wrote:
    hershey wrote:
    Your query is kinda' like "How high is up?" :)
    The break in the wire could be anywhere in the total length of your MH.
    Heres what I would do if faced with the same problem:
    Find the wire that goes to the right tail light and connect a wire to it and run it to the pigtail of the left tail light. Break that tail light wire there and then splice the right tail lights wire to the left. Good to go.

    Now that won't work with the turn signals. Or the brake lights if the turn signals are a part of them and not a seperate amber light.

    OP said it is his turn signal, not his tail light that is bad, so this does not apply.

    Did you test from the 12v hot of the tail light to its ground, or to a known good ground you have established? If you tested to the light's ground, you still don't know if it is the hot wire or the ground wire that is bad.

    After testing for current on the hot wire to a known good ground that you provide, check for a good ground to a known good hot that you provide too. That way you know for sure which wire(s) need attention.

    If the ground wire is bad, just run a new ground wire to the frame.

    If the hot wire is, indeed, the bad wire, you will have to trace it back. Yes, there is a fuse that controls that circuit. That would be the first place to check. If the fuse is good, check for current TO the fuse. You now know whether to look before the fuse block or after the fuse block, assuming the fuse itself was good.

    Thanks for catching that. Sometimes I have difficulty when people type too close to the paper :)
  • n4hwl wrote:
    I have a 2004 Phaeton made by Tiffin. My left rear turn signal light is not working. I assumed that the bulb was burnt out. I checked it and the turn signal bulb is fine. I checked and found there is no 12 volt getting to the turn signal fixture when the left signal is activated. Ok Where so I go from here? I thought there was probably a connector that had come loose. I am yet to find a loose connector. Is there a fuse that controls only the left turn signal? The right turn signal is working fine. Any suggestion would be appreciated.

    Ken


    Ken,
    Just wondering, do you have separate turn signals from your brake lights? As in, do you have "Amber" turn signals? If not, and your turn signals and brake lights are combo units, do your brake lights work on both sides? If, you have combo units, as many of us do, and, both brake lights work on both sides, then the circuit that energizes that filament of the left bulb, which is the same circuit for the turn signal is working.

    That is, it's working when in the "NO Turn" situation. If a turn is in action, then the circuitry is changed due to the position of the turn lever in the column.

    But, this is all presupposing you have combo units. If you do have Amber turn signals, then, that's a whole different animal. There should be fuses for each side of the turn signal system. If you have manuals, as in chassis manual or, a owners manual for the coach itself, you may find the location of the fuses there.

    I don't know if any of this info will help you but, I thought I'd throw it at ya.
    Scott
  • Is the front turn signal working?

    I ask because there is a flasher module (depending on your chassis) that can go bad both front and rear on the same side will stop working, there are also fuses.

    What chassis do you have?
  • Bobbo's avatar
    Bobbo
    Explorer III
    hershey wrote:
    Your query is kinda' like "How high is up?" :)
    The break in the wire could be anywhere in the total length of your MH.
    Heres what I would do if faced with the same problem:
    Find the wire that goes to the right tail light and connect a wire to it and run it to the pigtail of the left tail light. Break that tail light wire there and then splice the right tail lights wire to the left. Good to go.

    Now that won't work with the turn signals. Or the brake lights if the turn signals are a part of them and not a seperate amber light.

    OP said it is his turn signal, not his tail light that is bad, so this does not apply.

    Did you test from the 12v hot of the tail light to its ground, or to a known good ground you have established? If you tested to the light's ground, you still don't know if it is the hot wire or the ground wire that is bad.

    After testing for current on the hot wire to a known good ground that you provide, check for a good ground to a known good hot that you provide too. That way you know for sure which wire(s) need attention.

    If the ground wire is bad, just run a new ground wire to the frame.

    If the hot wire is, indeed, the bad wire, you will have to trace it back. Yes, there is a fuse that controls that circuit. That would be the first place to check. If the fuse is good, check for current TO the fuse. You now know whether to look before the fuse block or after the fuse block, assuming the fuse itself was good.
  • I would check (The left signal) at the trailer connector, then backwards from there.

    Terry.
  • you might want to start at the other end at the signal light switch, if there is power there follow it back till you find the problem
  • Your query is kinda' like "How high is up?" :)
    The break in the wire could be anywhere in the total length of your MH.
    Heres what I would do if faced with the same problem:
    Find the wire that goes to the right tail light and connect a wire to it and run it to the pigtail of the left tail light. Break that tail light wire there and then splice the right tail lights wire to the left. Good to go.

    Now that won't work with the turn signals. Or the brake lights if the turn signals are a part of them and not a seperate amber light.
  • n4hwl wrote:
    I have a 2004 Phaeton made by Tiffin. My left rear turn signal light is not working. I assumed that the bulb was burnt out. I checked it and the turn signal bulb is fine. I checked and found there is no 12 volt getting to the turn signal fixture when the left signal is activated. Ok Where so I go from here? I though there was probably a connector that had come loose. I am yet to find a loose connector. Is there a fuse that controls only the left turn signal? The right turn signal is working fine. Any suggestion would be appreciated.

    Ken

    Not sure if its the same system but there is(on my 2008 Allegro bus)a secondary flasher relay that runs the left rear turn signal and a seperate one that runs the right rear and I beleive each one is also fused seperatly.Its a sparton Chassis.Also maybe change your heading to turn signal from "tail lite"