Horn not working - Chevelle Tech
Electrical & Wiring Troubleshooting electrical problems.

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post #1 of 3 (permalink) Old Aug 12th, 18, 11:43 PM Thread Starter
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Horn not working

1971 Chevelle when pushing the horn button, it clicked, the key buzzer worked.

I purchased a new horn relay, hooked it up, nothing. no horn, no clicking and no key buzzer. Tested and there is power to it. there is not a horn fuse on the fuse box, is there a fuse somewhere in line that I am not seeing? I downloaded several wiring diagrams and they are inconclusive.

supposed to be able to honk the horn by grounding the wire from the horn button, nothing. It is possible the new relay is bad, but doubtful

appreciate any ideas and thoughts.
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post #2 of 3 (permalink) Old Aug 13th, 18, 1:47 AM
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Re: Horn not working

Have someone press the horn button and test for power at the horn connector. If you have power there, either the connector is making bad contact with the horn connector or you have a bad ground to the horn or the horn is bad.

There should be constant 12 volt at the horn relay supplied by the thicker wire. When you press the horn button, you ground out the signal wire to the horn relay. This makes the horn relay click and close the contacts that supply power to the horn. The clicking you hear is the contacts closing. Unless the contacts were bad, your old horn relay is possibly still ok since you heard the clicking. Your issue may be in the wire that leads to the horns, a bad ground to the horns or a bad horn. Possibly also corroded connectors.
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post #3 of 3 (permalink) Old Aug 13th, 18, 2:35 AM
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Re: Horn not working

If your horn(s) prove to be defective, I just had two horns restored (functionally and cosmetically) by a guy in Wisconsin. He did a beautiful job and it was less than a two-week turnaround. If you are interested, you can send me a private message and I will pass his contact information on to you.
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