Question about Cars & Trucks
1991 mercury grand marquis the horn started honking by itself and won't shut off I had to disconnect the horn wires. What could cause this?
Posted by Anonymous on
I just had that problem too - 3 in the morning - horn relay switch.
Posted on Mar 11, 2013
Posted on May 14, 2010
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Posted on Jan 02, 2017
The switch is behind the air bag. You can disconnect eh negative battery cable for a few hours, then pull the SRS fuse, then remove on the back of the steering wheel, remove the screws and the SRS bag, then check the horn switch and wires. The switch or the spring could be bad.
Posted on Mar 19, 2010
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