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Larmo63
Samba Member
Joined: May 26, 2015
Posts: 338
Location: SoCal
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 Posted: Sat May 27, 2023 2:57 pm Post subject: Horn Issues |
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‘62 sunroof bug, should the horn be insulated from it’s mounting bracket? I mean between the body bracket and the horn arm.
This thing is driving me nuts, everything is clean inside the center of the steering wheel, horn tests good old wired directly to the battery.
I’m ready to tri a remote horn button and bypassing the steering wheel craziness.
Help?
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Lawrence
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‘61 Mango Green Single Cab
'62 Pearl White Ragtop sedan
'66 Ruby Red Cabriolet
'86 Porsche 911 Carrera |
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mukluk
Samba Member
Joined: October 18, 2012
Posts: 7023
Location: Clyde, TX
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| Posted: Sun May 28, 2023 10:27 am Post subject: Re: Horn Issues |
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Neither the horn nor its bracket need to be insulated from the body of the car.
If the problem you're having is it sounds constantly (you haven't said what exactly is driving you nuts), it may be the horn is shorted internally. A quick check to see if this is the problem would be to unbolt it from the car, wires still attached, and see if it still blares. If it only blares when it's bolted to the car, the horn is bad; conversely, if it still blares when not touching the car body, then your horn button circuit is shorted to ground.
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1960 Ragtop w/Semaphores "Inga" |
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Larmo63
Samba Member
Joined: May 26, 2015
Posts: 338
Location: SoCal
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| Posted: Sun May 28, 2023 3:50 pm Post subject: Re: Horn Issues |
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Horn works when attached directly to 6V power.
Only a whimper when installed and horn button depressed.
_________________
Lawrence
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
‘61 Mango Green Single Cab
'62 Pearl White Ragtop sedan
'66 Ruby Red Cabriolet
'86 Porsche 911 Carrera |
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EVfun
Samba Member
Joined: April 01, 2012
Posts: 5475
Location: Seattle
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| Posted: Sun May 28, 2023 5:17 pm Post subject: Re: Horn Issues |
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| Larmo63 wrote: |
Horn works when attached directly to 6V power.
Only a whimper when installed and horn button depressed. |
Test the horn with the car running but not moving. Then do that same test again while you re both pressing the horn button and turning the steering wheel. The ground for the horn is through the steering box. If the box is less than tight that can be a problem.
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| Wildthings wrote: |
| As a general rule, cheap parts are the most expensive parts you can buy. |
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glutamodo 
The Android
Joined: July 13, 2004
Posts: 26313
Location: Douglas, WY
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| Posted: Sun May 28, 2023 7:52 pm Post subject: Re: Horn Issues |
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The terminals on the horn are for power and ground patch. The horn mounting bracket has nothing to do with the horn system ground.
The ground path goes up to the steering column tube, this becomes "live" with the potential of horn circuit. The horn ring connects to the wire running down the column shaft which connects at steering coupler disk to ground on one of the two bolts connected to the steering box.
My 62 Sunroof bug had a lot of issues with the tab on the steering column tube. No horn at all when on 6V. Did OK for a while once i changed to 12V but then that went sour. I eventually just made it relay operated, which I've discussed elsewhere on TheSamba. https://www.thesamba.com/vw/forum/viewtopic.php?t=364573&start=13 And for that I DID use the horn mounting bracket screw for a ground source. But in the factory configuration, it's just a mounting bracket and nothing more.
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Andy T.
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