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Horn not working

Discussion in 'Electrical & Audio' started by Troyesco, Nov 7, 2019.

  1. Troyesco

    Troyesco Junior Member

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    Location:
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    First Name:
    Troy
    Truck Year:
    1973
    Truck Model:
    K5
    Engine Size:
    350
    Ok so I just picked up this truck and it doesn’t have the correct stock steering wheel. So I go to check horn and pull off the cover and see there’s no wire on steering wheel cap. I used my screwdriver to make contact and the horn sounded off once and no more??? I can hear the horn relay click whenever I make contact but no horn. The truck has all new wire harness from engine side firewall out and new horns as well. Could it possibly be the relay it does look original?
     
  2. MisterB

    MisterB Full Access Member

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    Truck Year:
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    Truck Model:
    GMC K2500 4X4
    Engine Size:
    350
    It's probably not the relay or the horns. Most likely something isn't right with the horn button parts. I'd recommend getting the correct steering wheel and all the horn button parts on eBay/junk yard

    Sent from my SM-N975U1 using Tapatalk
     
  3. Troyesco

    Troyesco Junior Member

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    Engine Size:
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    Ok also the turn signal lights don’t work with the switch but the hazard light flash with the hazard light switch
     
  4. omillan99

    omillan99 Full Access Member

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    350 4 Bolt
    That sounds like the turn signal cam is causing the issue then.
     
  5. 1987 GMC Jimmy

    1987 GMC Jimmy Automobile Hoarder

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    I agree. Something’s wonky with the canceling cam, but I’d review what you have for contact parts and see what a horn contact kit is supposed to look like just to be safe. I wouldn’t run a non-GM steering wheel personally, but that’s not for everyone. Also, it’s pretty easy to directly test the horns if you ever need to. Just run a ground leg to the metal bracket from the battery and your hot wire to the single pin. Should go beep beep, albeit at a higher or lower pitch since it’s just one.
     
  6. Goldie Driver

    Goldie Driver Full Access Member

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    Truck Year:
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    Truck Model:
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    Engine Size:
    350
    Check to see that the electrical connector ( long skinny black connector ) on the bottom of the column is completely plugged in.

    Something like this :

    [​IMG]

    My brake lights would not work, but everything else would, because this had somehow worked it's way loose when I 1st had the truck.
     
    Troyesco likes this.
  7. Troyesco

    Troyesco Junior Member

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    Engine Size:
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    Ok I’ll check it out this weekend
     

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