head and tail marker lights went out

Discussion in 'Trucks [ Eighteen Wheelers ]' started by Peterbilt359, Jul 29, 2013.

  1. Jul 29, 2013 #1
    Peterbilt359

    Peterbilt359 Light Load Member

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    The marker lights on the headlights and the tail lights went out on my truck but still work when I use the blinker or brake pedal ect... So it should be a bad head/tail marker light relay?
     
    Peterbilt359, Jul 29, 2013
    Peterbilt359, Jul 29, 2013
    #1
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  3. Jul 29, 2013 #2
    Heavyd

    Heavyd Road Train Member

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    Could be, check all your breakers, fuses. Could also be the switch itself.
     
    Heavyd, Jul 29, 2013
    Heavyd, Jul 29, 2013
    #2
  4. Jul 29, 2013 #3
    SHO-TYME

    SHO-TYME Road Train Member

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    Probably have a short in the clearance light circuit, the brake and turn lights are separate form the clearance lights.
     
    SHO-TYME, Jul 29, 2013
    SHO-TYME, Jul 29, 2013
    #3
  5. Jul 29, 2013 #4
    Peterbilt359

    Peterbilt359 Light Load Member

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    The clearance lights work but the running lights don't.
     
    Last edited: Jul 29, 2013
    Peterbilt359, Jul 29, 2013
    Peterbilt359, Jul 29, 2013
    #4
  7. Jul 30, 2013 #5
    Peterbilt359

    Peterbilt359 Light Load Member

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    The light on the switch doesn't light up, what does that mean?
     
    Peterbilt359, Jul 30, 2013
    Peterbilt359, Jul 30, 2013
    #5
  8. Jul 30, 2013 #6
    rjones56

    rjones56 Heavy Load Member

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    Possibly a bad switch.Try a jumper wire from another hot (+) source to the supply wire on suspected switch.
     
    rjones56, Jul 30, 2013
    rjones56, Jul 30, 2013
    #6
  9. Jul 31, 2013 #7
    Peterbilt359

    Peterbilt359 Light Load Member

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    Would the electrical line to the trailer have something to do with it? Some times the marker lights come on whenI'm hooked to a trailer but will go off when I disconnect.
     
    Peterbilt359, Jul 31, 2013
    Peterbilt359, Jul 31, 2013
    #7
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