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Technical ** fixed**Getting shocked when hitting the horn. 41 Ford

Discussion in 'The Hokey Ass Message Board' started by wheeltramp brian, Aug 7, 2026.

  1. G-son
    Joined: Dec 19, 2012
    Posts: 1,553

    G-son
    Member
    from Sweden

    Freewheel diodes solve an issue, but they are polarity sensitive so you need to think how things get connected. A simple resistor or capacitor in parallell with the coil also dampen the voltage spikes by letting some current keep flowing after the supply is interrupted - doesn't take much to reduce the spike quite a bit.
     
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  2. oldolds
    Joined: Oct 18, 2010
    Posts: 3,790

    oldolds
    Member

    For the heck of it try a different horn. If you have one.
     
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  3. wheeltramp brian
    Joined: Jun 11, 2010
    Posts: 3,541

    wheeltramp brian
    Member

    Tried two different horns same outcome
     
    bchctybob likes this.
  4. Didn’t read all of the posts but if it’s still using the stock wire in the column I would switch it to the stock ground style as it’s better for the horn to honk vs shorting out IF the wire rubs through. Get an older metal cased relay for looks (4 wire insulated base) and have the horn wire ground the coil in the relay. Also make sure that there’s felt or plastic washers under the 3 bolts holding the rings together that way it grounds on the steering shaft/column and not the drivers arm. Not sure on the ‘41 but some cars even use plastic inserts that encomp*** the whole bolt shaft to insulate. Just make sure there isn’t a clear path from the steering shaft/column to the horn ring when pushed.

    If the relay has numbers:
    30 - power to the horn
    85 - ground from steering wheel ****on
    86 - power from 12v source (can branch off of #87)
    87 - power from 12v fused source
     
    Last edited: Aug 10, 2026
  5. swade41
    Joined: Apr 6, 2004
    Posts: 14,993

    swade41
    Member
    from Buffalo,NY

    Can you post a video of your test procedure LOL
     
  6. Johnny Gee
    Joined: Dec 3, 2009
    Posts: 14,998

    Johnny Gee
    Member
    from Downey, Ca

  7. Onemansjunk
    Joined: Nov 30, 2008
    Posts: 630

    Onemansjunk
    Member
    from Modesto,CA

  8. jimmy six
    Joined: Mar 21, 2006
    Posts: 18,036

    jimmy six
    ALLIANCE MEMBER

    I lost the parking brake cable to a 12 volt ground and knew the body, frame, and engine were all grounded properly. They are a bi*ch to change out. I added another separate ground cable to body at the battery. So far so good.
     
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  9. kls50
    Joined: Sep 9, 2013
    Posts: 380

    kls50
    ALLIANCE MEMBER

    Years ago, when my son was 3 years old was crying and ****ing his thumb when I returned from paying for gas. I asked him what happened and he show me his burnt thumb and pointed at the cigarette lighter socket!
     
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  10. Sharpone
    Joined: Jul 25, 2022
    Posts: 4,767

    Sharpone
    ALLIANCE MEMBER

    I liked it at first but I just can’t
    Dan
     
  11. F-ONE
    Joined: Mar 27, 2008
    Posts: 3,830

    F-ONE
    Member
    from Alabama

  12. pprather
    Joined: Jan 10, 2007
    Posts: 9,728

    pprather
    Member

    @wheeltramp brian ,
    Have you checked the insulator washers, etc. yet?
     
  13. garyf
    Joined: Aug 11, 2006
    Posts: 395

    garyf
    Member

    These fly back diodes were used on auto a/c clutches, so when the a/c clutch magnetic coil was de-energized the spike didn't destroy the cars onboard computor. Later Fords used what they called a clamping diode on their starter relay for the same reasons
     
    Last edited: Aug 11, 2026
  14. wheeltramp brian
    Joined: Jun 11, 2010
    Posts: 3,541

    wheeltramp brian
    Member

    Yesterday I was sick with food poisoning But still at work just working half speed And couldn't get to the car as I'm waiting on other parts. Maybe today towards the end of the day
     
  15. wheeltramp brian
    Joined: Jun 11, 2010
    Posts: 3,541

    wheeltramp brian
    Member

    So a couple different relays just showed up from UPS and I popped the first one in that somebody had recommended and it fixed it. No more shock when touching anything. I do have new insulators coming for the horn ****on anyways. 17864689528127064825375014563253.jpg
     
  16. Yep, it's got a diode in it, the missing magic. No solid-state diodes in 1941, so they had to do things differently.
     
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  17. Sharpone
    Joined: Jul 25, 2022
    Posts: 4,767

    Sharpone
    ALLIANCE MEMBER

    I find this thread shockingly good
    Dan
     
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  18. Johnny Gee
    Joined: Dec 3, 2009
    Posts: 14,998

    Johnny Gee
    Member
    from Downey, Ca

    IMG_6259.jpeg
     
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  19. swade41
    Joined: Apr 6, 2004
    Posts: 14,993

    swade41
    Member
    from Buffalo,NY

    So where did you put it
     
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  20. Johnny Gee
    Joined: Dec 3, 2009
    Posts: 14,998

    Johnny Gee
    Member
    from Downey, Ca

    With out rereading it all again, pretty sure it was a swap out.
     
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  21. wheeltramp brian
    Joined: Jun 11, 2010
    Posts: 3,541

    wheeltramp brian
    Member

    So at first it had a three-prong regular horn relay that I swapped out for a four prong relay and then just swapped that out
     
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  22. swade41
    Joined: Apr 6, 2004
    Posts: 14,993

    swade41
    Member
    from Buffalo,NY

    I wasn't sure if it was like a diode that you wired into the horn wire or something, so in reality an easy fix at the fuse panel.
     
  23. wheeltramp brian
    Joined: Jun 11, 2010
    Posts: 3,541

    wheeltramp brian
    Member

    No it's not at the fuse panel. It's in the engine compartment by the horn
     
  24. Ziggster
    Joined: Aug 27, 2018
    Posts: 4,568

    Ziggster
    ALLIANCE MEMBER

    As a kid, probably around 6-7 yrs old I pushed the heated lighter into the door panel of my dad’s 66 Fairlane conv. lol!
     
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  25. pprather
    Joined: Jan 10, 2007
    Posts: 9,728

    pprather
    Member

    Details of the relay with diode is discussed in post #24, on page 1.
     
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  26. theHIGHLANDER
    Joined: Jun 3, 2005
    Posts: 11,062

    theHIGHLANDER
    Member

    As we're learning 3 pages in, there's always insulation between fingers and the grounding path. Packard is in a hardwood plug of sorts with the wire in the middle. The main body sits on heavy paper 2 hole washers between the horn ****on ***embly and mast in the center of the column. A relay has a coil. That coil momentarily spikes extra juice and wants all the ground it can get. Coils in the horns too.
     
    Sharpone likes this.
  27. The coils in the horns are the important ones... those are sending spikes while they're operating, the relay only sends one when you release the horn ring.
     
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  28. midnightrider78
    Joined: Oct 24, 2006
    Posts: 1,423

    midnightrider78
    Member

    Man, I'd still be on the run.
     
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  29. Crusty Chevy
    Joined: Aug 28, 2007
    Posts: 1,352

    Crusty Chevy
    Member

    I'm having the exact same problem with our '56 Pontiac. Arm out the window resting on the window garnish molding, hit the horn ring and bam, zapped through the elbow. Just ordered the same relay, thanks for posting this.

    Just for clarification, you are only using the three terminals with your factory plug, the other two are hanging in the breeze unused, correct?
     
  30. wheeltramp brian
    Joined: Jun 11, 2010
    Posts: 3,541

    wheeltramp brian
    Member

    20260818_130002.jpg I'm using all four terminals. Hooked up how it's supposed to be except the hot in is also hooked to the accessory terminal. The ground is your horn wire and the device is your horn
     
    dwollam, Crusty Chevy and acme30 like this.

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