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1990 Chevy k2500 problem

Discussion in 'Chevy Trucks' started by red07gsxr, Oct 30, 2008.

  1. red07gsxr

    red07gsxr Senior Member
    from meriden
    Messages: 256

    when i put the lights on i dont have any tail lights, no brakes no running lights. just happened. need some help. when the lights are off i have brake lights. need help asap
     
  2. Detroitdan

    Detroitdan PlowSite.com Addict
    Messages: 1,937

    Check for corrosion inside your trailer plug. I had that happen to me last year. Theres other things it might be, like corrosion inside the tallight housings, but it caught my eye because the exact same thing happened to me. I looked out one night and saw my brakelights on, thought someone was trying to steal it. Looked in my trailer plug a couple times and didn't see anything, then realized when I touched it it was smokin' hot. Took it apart and found corrosion had caused a wire to short against the brake light wire.
     
  3. red07gsxr

    red07gsxr Senior Member
    from meriden
    Messages: 256

    there not on all the time, they work when i use the brake. but when i put the lights on i have nothing. wit the lights on even if i push the brake pedal i get nothing. whenthe lights are off i have brake lights. no running lights though
     
  4. Detroitdan

    Detroitdan PlowSite.com Addict
    Messages: 1,937

    Oh, my bad, I thought you meant the brake lights were on all the time. If your brake lights work UNLESS the running lights are on, I'd say it is interference somewhere in the taillights themselves. Or could still be in the trailer plug. I lost my headlight switch once too, but I don't think that's your problem since it would not involve the brake lights. Check your trailer plug, then try removing the taillights and unplugging the bulbs.
     
  5. bharry20

    bharry20 Senior Member
    Messages: 124

    sounds like a bad ground to me. check the one at the back under the bed.
     
  6. Willy-D8

    Willy-D8 Member
    Messages: 47

    X2 on bad ground.


    Had a similiar situation with my brake lights working only when they felt like it. Clean the ground and grease it with dielectic grease as a starting point.
     
  7. red07gsxr

    red07gsxr Senior Member
    from meriden
    Messages: 256

    where exaclty is this ground so i can have a idea where it should be. i kno under the bed but location would be helpful
     
  8. Farm Boss

    Farm Boss Senior Member
    Messages: 183

    Do you have dash lights?
     
  9. red07gsxr

    red07gsxr Senior Member
    from meriden
    Messages: 256

    yes i am pretty sure i do...
     
  10. bharry20

    bharry20 Senior Member
    Messages: 124

    the ground is usually near the end of the frame rail on the drivers side.
     
  11. RAZOR

    RAZOR Senior Member
    Messages: 342

    I just fixed the same problem on my Acura. It turned out that on the right tail light bulb had corrorsion in the socket and must have been grounding through one of the terminals. It only happened when the running lights were on. Check the sockets for corrosion and clean them. It solved my problem. Also as well as the trailer plug, check the T connector if you have one.
     
  12. red07gsxr

    red07gsxr Senior Member
    from meriden
    Messages: 256

    i am going to drive the truck to work tomarrow and check the ground. my headlights and dash light work just fine. just no tail lights. i have brake lights only when t elight are off but when i turn the lights on nothing....
     
  13. natueboy

    natueboy Junior Member
    Messages: 22

    check every bulb

    Hey check al the bulbs, this one use to get our mechanic at least once every two years, and typicaly it was a two way bulb, one side crossing over the other and shorthing everything out. Just a thougt. Im no mechanic. Good Luck
     
  14. bharry20

    bharry20 Senior Member
    Messages: 124

    he isn't complaining of blowing fuses so nothing is shorting out. the ground simply isn't good enough to ground everthing at once. just a little at a time.
     
  15. RAZOR

    RAZOR Senior Member
    Messages: 342

    When my bulbs were shorting out the fuse was not blowing. I guess there was not enough draw to blow it in my case
     
  16. red07gsxr

    red07gsxr Senior Member
    from meriden
    Messages: 256

    bad ground...i replaced the broken ground strap and put some fluid film to stop rust build up. all fixed. thanks for the input guys