C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Horn blows...and blows

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Old Jan 31, 2011 | 11:50 PM
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Default Horn blows...and blows

My horn never worked when I bought my vert 92 so just got around to trying to fix it, found out the fuse was blown so I replaced it and the horn blows and wont stop, even when I insert the key, and it's just the drivers side that blows.....is it grounding out somewhere? Where do I start? Oh and the wires were cut at the horn and reattached for some reason...
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Old Feb 1, 2011 | 12:37 AM
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on my 87, the wire under the horn button was grounding out cause the insulation had worn thru, sounds like po had issues also.
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Old Feb 2, 2011 | 10:56 AM
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Originally Posted by overdrawn
My horn never worked when I bought my vert 92 so just got around to trying to fix it, found out the fuse was blown so I replaced it and the horn blows and wont stop, even when I insert the key, and it's just the drivers side that blows.....is it grounding out somewhere? Where do I start? Oh and the wires were cut at the horn and reattached for some reason...
The horns are sounded by the horn button supplying a path to ground to the horn relay. But, if there is a short to ground, you would expect both horns to blow. Do you know if the other horn works? You can test it by using a jumper wire to the dark green wire at the horn from the battery B+. Be careful not to accidentally ground this jumper while you are working.

Once some bubba has modified the circuit, no telling what you will find. If the other horn is in working condition, you somehow have a short to B+ to the one that is blowing. If the pass. side horn does not work when tested, you could assume it would act the same as the driver's side horn if it did work, and there is a problem with the relay or the CCM input.

If you do these checks, post back with the results, and I or another forum member can post the FSM pages that could help you.
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Old Feb 2, 2011 | 11:13 AM
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From: Oliphant Ontario
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Check to see if your horn button still works by hitting it, you'll know if the 2nd horn comes on, if it does, button is good and wire to first horn is grounded. If it doesn't, probably is horn button and 2nd horn is probably burned out or cut somewhere.

Last edited by Sandpiper59; Feb 2, 2011 at 11:13 AM. Reason: typo
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Old Feb 2, 2011 | 12:48 PM
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From: backwoods upstate ny
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Originally Posted by overdrawn
the wires were cut at the horn and reattached for some reason...
due to underhood fires resulting from high current draw when an auto
horn blows continuously, LEO's responding to a 'horn' complaint may cut the wire...looks like your car has a 'history'
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