88 C1500 rear brake light, tail light and everything else

Discussion in 'Chevy Truck Forum' started by RayandTracy, Aug 1, 2010.

  1. RayandTracy

    RayandTracy Member

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    I know this has been beat to death but here it goes again:help:
    my 1988 chevy C1500 w/4.3 auto, 2wd has rear light issues all of a sudden. I won't be able to look at it until tomorrow evening so any thoughts or imput would be great prior to then.
    Here's what I know is going on:
    1.)all front lights signals and flashers working correctly.
    2.) with lights off the turn signals work fine, when apply brakes they speed up. I have no running lights on the rear at anytime.
    3.) If I turn the lights on I loose the brakes and the signals on rear completely.
    4.) I bought new tail light assemblies (left and right) from www.partsgeek.com
    5.) I will be taking a check light and multimeter through the rear and up the harness tomorrow evening with my wife helping from the drivers seat:)
    Thanks in advance for any and all thoughts on this issue!
    RayandTracy:bow:
     
  2. rynodog

    rynodog Senior Member

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    sounds like bad grounds, make sure they are not corroded
     
  3. dancurtis

    dancurtis New Member

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    ground

    there is a wire under the plastic/rubber piece on top of the rear bumper find it/ fix it and it will probably solve the problem
     
  4. RayandTracy

    RayandTracy Member

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    Thanks guys! You all were dead on it was right on the back cross member, someone had been there before and did a hack job of it. I soldered a new wire in and shrink wrapped it and everything is working as it should.
    RayandTracy
     
  5. benschevycrew

    benschevycrew Senior Member

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    Similar Issues: I have read and tried about everything
    I have a 1996 Chevy 1/2 ton

    My problem is Whenever i depress the brake pedal I blow the #1 fuse hazard - stop
    I have checked the relay it performs correctly in as well as out
    I have recently installed a 7 pin connector into the factory towing wiring all test out fine with a good ground i have tested them on the connectors poles as well as before and after my splices as well
    I have tested before and after I took out the new T connecter for the four pin bumper connector good as well
    I replaced what seemed to be burned out middle lights on my truck (blinker's - stop light bulb)
    still blowing fuses #1 when i depress the brake pedal
    with Both blinker assemblies unconnected it doesnt blow the fuse
    I rechecked and cleaned all connections still blowing fuses when brake pedal is depressed
    This doesn t have the circuitry on the back of blinker assembly
    oah yeah hazard switch seems to be broken doesn t keep depressed
    Any help is appreciated
    I m needing to get this fixed asap since i still need to hook up brake controller
    which is another question where in the is the wire for the brake switch
    ( but don t want to make a brick out of it)
     

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