Brake lights stay on

Discussion in 'Volvo Forum' started by global86, Jan 28, 2015.

  1. Patronas01

    Patronas01 Light Load Member

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    Dec 23, 2014
    California
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  3. global86

    global86 Bobtail Member

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    Jun 20, 2012
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    When I pulled the relay out they still were on.
     
  4. global86

    global86 Bobtail Member

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    Jun 20, 2012
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    So when i push the brakes down few times they stay on. I noticed when my brakes are set and I push in the trailer brakes only, they go off and start working normal again. I then tried the same thing with the just the tractor button and they still stay on. Seems like I'm narrowing down where the problem can be. Any more tips?
     
  5. x#1

    x#1 Road Train Member

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    Cherokee County, Alabama
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    off topic but this thread reminds me of way back when most all of the outlaws,me too,ran a switch thru the brake light switch to eliminate the brake lights coming on when we hit the brakes.what good was it? i have no idea upon reflection.could have been as simple as needing something to do when parked?
     
  6. Patronas01

    Patronas01 Light Load Member

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    Dec 23, 2014
    California
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    Have you try to do this with the trailer disconnected? This way you'll know that the problem is at the truck and not the trailer.
     
  7. jameslawton

    jameslawton Light Load Member

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    May 1, 2013
    Tulsa OK
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    Start simple check the brake pedal its self dirt and floor mats can cause it not o come all the way up also check your Jonny bar make sure it is all the way up its easy to bump a little causing brake lights to stay on
     
  8. Patronas01

    Patronas01 Light Load Member

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    Dec 23, 2014
    California
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    The reason not having your brake lights operating was so if you where chased by the cops they couldn't see the brake lights when you where braking to make a turn, specialy at night. My friends and i use to do that with our motorcycles when we were young and crazy.
     
  9. KB3MMX

    KB3MMX Road Train Member

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    Try running a ground wire straight from the battery ground to a lug on the front of the cab and see if they start working normal.

    I recently went through a bad ground problem with mine and it did some very crazy electrical things!

    I think the grounding on these trucks is pretty crappy.

    .
     
  10. Alaska76

    Alaska76 Road Train Member

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    Jan 20, 2014
    Inland Empire, WA
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    Is the Johnson bar in the full OFF position? I had the brake light stay on in my truck a few days ago. Turns out I hit the bar inadvertently when getting out and the bar stuck on just enough to engage the switch and illuminate the brake lights.
     
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