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No turn signals or hazards

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by coole99, Jan 22, 2018.

  1. Jan 22, 2018 #1
    coole99

    coole99 Bobtail Member

    32
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    Feb 26, 2008
    Pittsburgh, Pa
    0
    I have a 05 International 9400i and my turn signals/hazards aren’t working. I replaced flasher relay and it shorts immediately along with fuse blowing. I check bulbs, traced wires (not behind dash yet), and relays. What am I missing?
     
    coole99, Jan 22, 2018
    coole99, Jan 22, 2018
    #1
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  3. Jan 22, 2018 #2
    Cattleman84

    Cattleman84 Road Train Member

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    Maybe bad contacts in the relay panel causing it to arc and create an over amperage surge?
     
    Cattleman84, Jan 22, 2018
    Cattleman84, Jan 22, 2018
    #2
  4. Jan 22, 2018 #3
    BoxCarKidd

    BoxCarKidd Road Train Member

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    Aug 26, 2014
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    Do you have to turn on a turn signal or hazard switch before it shorts out?
     
    BoxCarKidd, Jan 22, 2018
    BoxCarKidd, Jan 22, 2018
    #3
  5. Jan 22, 2018 #4
    coole99

    coole99 Bobtail Member

    32
    5
    Feb 26, 2008
    Pittsburgh, Pa
    0
    No, as soon as I put the flasher relay in it shorts the fuse blows.
     
    coole99, Jan 22, 2018
    coole99, Jan 22, 2018
    #4
  7. Jan 23, 2018 #5
    Heavyd

    Heavyd Road Train Member

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    Ok, there is a flasher and relays for the signals. There is no flasher relay, so what is it that you are installing and blowing a fuse? Which fuse exactly? If you are installing the flasher and F2-D (20 amp) is blowing, after the flasher is the signal stat on the steering column. Something is shorted there or in the wiring between it and the flasher.
     
    Heavyd, Jan 23, 2018
    Heavyd, Jan 23, 2018
    #5
  8. Jan 23, 2018 #7
    coole99

    coole99 Bobtail Member

    32
    5
    Feb 26, 2008
    Pittsburgh, Pa
    0
    Ok, the f2-D (20 amp) is fine until I put the flasher in then the flasher short and fuse blows. Ok I’ll check wiring there. Do you think a bad turn signal switch could cause this?
     
    coole99, Jan 23, 2018
    coole99, Jan 23, 2018
    #7
  9. Jan 23, 2018 #7
    Heavyd

    Heavyd Road Train Member

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    It sure could. Anything is possible. Simply unplug it and see of the short goes away. I hope you have breakers instead of fuses, LOL! If it keeps popping the fuse then it must be a wire rubbed through on something in the dash. The wire between the flasher and signal switch is orange in colour, 12 gauge in size and number 55A.
     
    Heavyd, Jan 23, 2018
    Heavyd, Jan 23, 2018
    #7
    spsauerland and coole99 Thank this.
  10. Jan 24, 2018 #8
    coole99

    coole99 Bobtail Member

    32
    5
    Feb 26, 2008
    Pittsburgh, Pa
    0
    Thanks for the help Heavy D!! The wire that was rubbing was behind the dash rubbing against the steering column. Thanks again!!
     
    coole99, Jan 24, 2018
    coole99, Jan 24, 2018
    #8
    Heavyd Thanks this.
  11. Jan 25, 2018 #9
    Heavyd

    Heavyd Road Train Member

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    Cool! Great to hear you found it!
     
    Heavyd, Jan 25, 2018
    Heavyd, Jan 25, 2018
    #9
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