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K
Can anyone give me some suggestions on my horn problem? Horn blows when hooked up to direct power source by jumpers. Changed horn relay switch and installed horn contact kit. Horn still won't blow when horn button is depressed. Any clues to whats wrong? 1978 w/ tilt. Thanks for any help anyone can give.
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Did you get down to the lower horn contact in the column? If not, that may be gummed up.
I had my column rebuilt last month. Besides replacing some broken parts up top in the column, the lower contact was gummed up. All it required was a cleaning. They did a continuity check at the wire harness connector on the column to ensure that the horn button was making contact.
So you may want to check continuity on the steering column side. If it checks out ok, then you will have to start chasing wires on the vehicle harness side.
GEN III 5.7L "LS6" Engine swap
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Sequence #3975
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Lifetime Member #26
Borgeson Steering Box
Born 8/1981
Sequence #3975
Click here to see more pics of my Vette on CarDomain.
Lifetime Member #26
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I'd bet Darryl is right 
My horn on my 78 Pace Car wasn't working and I took it apart and cleaned it up but put it back together wrong and had to have C&HP in Olympia redo it but it worked fine after that.
cilrah 2008-09-21 18:53:41
My horn on my 78 Pace Car wasn't working and I took it apart and cleaned it up but put it back together wrong and had to have C&HP in Olympia redo it but it worked fine after that.
I learned an important lesson, take pictures of stuff before and during disassembly 
MARK
LIFETIME MEMBER #117 
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"Keep up the Pace"
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s
Kenny78, check the small contact spring in the column? Its a small spring that looks like a spring out of a ink pen. Thats what I found was my problem. Thanks
sgm2004
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Duncanville, TX - USA
Joined: 11/8/2003
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Vette(s): #1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/
Am-Fm/map light National/Regional/Chapter NCRS "Top Flight"
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Member: NCRS, NCRS Texas, Corvette Legends of Texas
Have you checked the fuse?
The horn button provides a ground for the relay, so there needs to be power at the contact on the button. Check the button wire, the one with the small spring/plastic barrel clip for voltage. If there is no voltage there, the relay won't close when you press the button, and the horn won't toot.
The horn button provides a ground for the relay, so there needs to be power at the contact on the button. Check the button wire, the one with the small spring/plastic barrel clip for voltage. If there is no voltage there, the relay won't close when you press the button, and the horn won't toot.
Joel Adams
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Vette(s): 70 LT1 coupe, 69 350 HP coupe, 69 390HP 427 coupe, 71 LS5 convert, 85 coupe, 93 coupe
Listen if the relay clicks when you tap the horn button. If it does, your problem is either the relay or wiring to the horn. If it does not click, start working backwards to the horn button. Remember that the horn button is a switch to ground to complete the circuit, so every place up to the horn button is always hot.
Good luck
Larry
Good luck
Larry
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7
Just rebuilt mine and found I had a problem with the large spring that works the telescope. This spring also makes contact for the horn. If you have telescoping wheel try pushing your wheel in and trying the horn.
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K
Thanks for all you tips. I know what I'm doing this weekend.
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in Forum: C3 Electrical, Body and Interior
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