Help No brake lights

Discussion in 'Trucks [ Eighteen Wheelers ]' started by brenes-built, Jan 3, 2012.

  1. brenes-built

    brenes-built Light Load Member

    Messages:
    157
    Thanks Received:
    10
    Joined:
    Apr 14, 2011
    Location:
    Vancouver, Wa
    Okay just got the truck washed and now I have no brake lights... Everything else works turns and running lights.. Both tractor and trailer have no brakes... Where do I start looking? It's a 99 pete... Thanks :biggrin_25521:
     
  2. TennMan

    TennMan Road Train Member

    Messages:
    4,812
    Thanks Received:
    4,164
    Joined:
    Sep 21, 2011
    Location:
    Hazzard County Jail !!!!!
    Check your fuses sounds like a short caused brake fuse to blow.
     
  3. brenes-built

    brenes-built Light Load Member

    Messages:
    157
    Thanks Received:
    10
    Joined:
    Apr 14, 2011
    Location:
    Vancouver, Wa
    Fuses look good.....
     
  4. TennMan

    TennMan Road Train Member

    Messages:
    4,812
    Thanks Received:
    4,164
    Joined:
    Sep 21, 2011
    Location:
    Hazzard County Jail !!!!!
    Check and see if the pig tail has water in it at both ends if connected to truck that way.
     
  5. TennMan

    TennMan Road Train Member

    Messages:
    4,812
    Thanks Received:
    4,164
    Joined:
    Sep 21, 2011
    Location:
    Hazzard County Jail !!!!!
    do a quick disconnect of the pig tail and see if the tractor brake lights begin to work. if so it's either the pig tail or a trailer issue.
     
  6. brenes-built

    brenes-built Light Load Member

    Messages:
    157
    Thanks Received:
    10
    Joined:
    Apr 14, 2011
    Location:
    Vancouver, Wa
    It has to be the truck...because still no lights with the pig trail unplugged from trailer...
     
  7. kalh7

    kalh7 Light Load Member

    Messages:
    176
    Thanks Received:
    57
    Joined:
    Mar 28, 2007
    Location:
    southern illinois
    might be the brake light switch. if im thinking right it is behind the plastic dash pieces behind the pedals. should be labeled saying what the switch is for as there is more than one. i would think the only way to check the switch is to make sure you have power to one post than apply the brake to check if power to other post.
     
  8. TennMan

    TennMan Road Train Member

    Messages:
    4,812
    Thanks Received:
    4,164
    Joined:
    Sep 21, 2011
    Location:
    Hazzard County Jail !!!!!
    Yea sounds like the relay switch. Behind the brake pedal
     
  9. Bill104

    Bill104 <b>Pepsiholic</b>

    Messages:
    718
    Thanks Received:
    762
    Joined:
    Dec 27, 2011
    Location:
    Sacramento,Ca
    And be sure to use a light tester on the fuses, sometimes they" look ok but there not
     
  10. bender

    bender Road Train Member

    Messages:
    2,105
    Thanks Received:
    1,292
    Joined:
    Jul 20, 2010
    Location:
    Don't Kid Yourself
    Should have separate brake light switches and relays for tractor and trailer.
    Brake lights will only operate with ignition key on.
    Does the truck have a maxi or mega fuse panel under the hood?