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  1. H

    Wiring Issues. 81 gmc.

    Check your grounds.
  2. H

    Wiring Issues. 81 gmc.

    Fail Soo Today I ran the truck with no 5 amp fuse in and it still does it... But only on high beam? Soo I guess now it would be a good idea to check the high beam circuit? It shows both signals flashing but only on the dash. I checked the truck tail lights and they both don't flash even though...
  3. H

    Wiring Issues. 81 gmc.

    getting there... I tried today taking that 5 amp fuse out and what do you know everything works fine, even with the dimmer turned. I am soo happy I have it knocked down to one circuit. This also give me the ability to drive at night again, just without dash lights and have everything work...
  4. H

    Wiring Issues. 81 gmc.

    Oh snap. I didn't even know there was a parking lamp setting. LOL I guess it has not worked for a long time. Yes the blinkers start working properly, instead of both of them flashing, one brighter than the other... and the gas gauge goes back to working again. The blinkers get affected all over...
  5. H

    Wiring Issues. 81 gmc.

    I will make the assumption that this issue only appears with the H/L switch is in the headlights position - not when its in the parking lights position. Very true. These symptoms appear at anything besides pushed all the way in. It happens on either high or low... makes no difference...
  6. H

    Wiring Issues. 81 gmc.

    I have a 1981 GMC serria. The truck has a 454, is 4 wheel drive and has dummy lights. I spent all day today trying to solve an issue, I hope someone might have run into before. Everything works fine with no issues...until.... You turn the lights on. When you turn the lights on... The fuel...

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