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HELP HELP HELP - blinker/lights problem

Discussion in '1969-1972 K5 Blazer | Truck | Suburban' started by Topdown, Jul 21, 2003.

  1. Topdown

    Topdown 1/2 ton status

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    Here's the deal... when I do not have my headlights on, my blinkers work just fine.

    When I turn on my headlights, or even my parking lights, the right dash indicator lights up about 50% bright... when I turn on my right blinker, it doesnt blink. When I hit the brakes with my right blinker on, I dont get brake lights or blinker or anything. Turn off the blinker (lights still on) I get no LEFT stop/brake light. the light is on... but doesnt get bright when I hit the brakes. When I turn on the left blinker, it blinks, and I get stop/brake lights... when I turn it off I get both of my stop/brake lights back.

    So fricken wierd.

    No burned out bulbs, at least no burned out driving lights. The only bulb that could be burned out is the front right turn signal...

    HELP!!! I cant drive without blinkers, its a SERIOUS pet peeve to not use my blinkers

    Thanks
     
  2. Triaged

    Triaged 1/2 ton status

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    Re: blinker/lights problem - Help!

    I would have to guess that it is the switch inside the column that is giving you problems. GM used the same part for about 3/4 of last century and you should be able to pick one up in the "HELP" section of any parts store. All of the current that goes to the rear brake lights goes through that switch.
     
  3. redk5

    redk5 Registered Member

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    Re: blinker/lights problem - Help!

    Try wiggling the hazard swithch sometimes this will contact one blinker terminal in the switch, if thats not it i would suspect the switch but it mas be some king of short between the headlight swich and the turnsignal switch, but before you check all that check your lights do they all work, I've seen bulbs blow and one filament in the bulb touches the other nside the bulb causing a cross short, if this is the case than the bulb may appear to work, look at each filament -> rear tailights.
     
  4. Topdown

    Topdown 1/2 ton status

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    Re: blinker/lights problem - Help!

    rear lights are LED's, but fronts may be jacked... I will take a look at them.
     
  5. Topdown

    Topdown 1/2 ton status

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    Re: blinker/lights problem - Help!

    /forums/images/graemlins/thumb.gif

    I will definitely look into replacing that switch.

    Thanks
     
  6. kennyw

    kennyw N9PHW Premium Member

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    Re: blinker/lights problem - Help!

    [ QUOTE ]
    when I do not have my headlights on, my blinkers work just fine.

    When I turn on my headlights, or even my parking lights, the right dash indicator lights up about 50% bright...

    [/ QUOTE ]
    I am thinking "BAD GROUND". Make sure your connections are clean and well grounded before you start throwing money in switches.
     
  7. Topdown

    Topdown 1/2 ton status

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    Re: blinker/lights problem - Help!

    how the heck do you ground your tail lights? there are no ground wires... they must ground through the housing?
     
  8. 6869704x4

    6869704x4 Registered Member

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    Re: blinker/lights problem - Help!

    Yes the taillights are grounded through the housing. The factory put ground straps between the bed and frame.
    Four rules for electrical problems.
    1. Check the ground.
    2. Check the ground.
    3. Check the ground.
    4. Start checking other stuff.
     
  9. Topdown

    Topdown 1/2 ton status

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    Re: blinker/lights problem - Help!

    I have checked the gounds and they all appear to be good. I removed both tail lights, cleaned them up and reinstalled them. cleaned every ground I could find... So, since doing that the problem has become:

    turn on lights - all lights work (keep lights on)
    turn on right blinker - blinker works (front & rear)
    turn off right blinker
    step on Brakes - LEFT brakelight does not work
    turn on left blinker - blinker works (front & rear)
    turn off left blinker
    step on brakes
    BOTH brake lights work now

    WTF!?!?!?!?!?!?!? /forums/images/graemlins/angryfire.gif /forums/images/graemlins/angryfire.gif /forums/images/graemlins/crazy.gif /forums/images/graemlins/crazy.gif /forums/images/graemlins/angryfire.gif /forums/images/graemlins/angryfire.gif

    I am so confused! /forums/images/graemlins/confused.gif /forums/images/graemlins/confused.gif
     
  10. 6869704x4

    6869704x4 Registered Member

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    Re: blinker/lights problem - Help!

    Try messing with the curved plug down on the steering column. All the things your having trouble with go through that plug(except headlights). Its a longshot but cleaning that plug is free.
     
  11. Triaged

    Triaged 1/2 ton status

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    Re: blinker/lights problem - Help!

    I stick with my first sugestion!...Even more now.

    Remember:
    ALL THE CURRENT TO THE REAR LIGHTS GOES THROUGH THAT SWITCH!

    I would think that if it was a bad ground or a loose wire that it would have the same effect all the time.
     
  12. BobK

    BobK 1/2 ton status

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    Re: blinker/lights problem - Help!

    Topdown,I had a prob. with my LED's when I 1st put them in as well.

    I checked all the grounds,changed the blinker to an electronic one,made sure the LED'S were working properly but still couldn't get them working properly.

    I planned on replaceing the taillight harness during my resto. anyway and when I did the rear LED's worked perfectly.The old harness had been cut up for trailer lights and such plus it was 32 years old.I think a new rear harnes runs $67 bucks from GMC Pauls(thanks where I got mine from).
    Well...that's somthing else to check anyway.
     
  13. RATAH

    RATAH 1/2 ton status

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    Re: blinker/lights problem - Help!

    Topdown
    does your gas gauge go dead also?
    i have the same problem
    mine is in the gauge cluster
    the wiring cluster panel (thing)
    has a break in it,
    its on a 1985
    no idea if this helps you but it something you can check
     
  14. Topdown

    Topdown 1/2 ton status

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    Re: blinker/lights problem - Help!

    havent noticed it go dead, but I will take a look...
     

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