General Horn

[carl2745]

Last night my horn went off on its own constant blast had to disconnect wiring plugs to stop it check for shorts etc every thing seems alwright left horn unplugged becausese it will go off after a few minutes off wringing back up so left it off also I can hear a clicking noise when sat in car near fuse box ,

 

[Davren]

Unless you've had the car from new, perhaps a previous owner fitted an after market alarm that's now self triggered.
.

 

[MultipleMultis]

I had wet inside fuse box causing this.
I posted about some months ago.
Are any other electrics playing up? Are you seeing battery drain.
else it is likely only on the horn circuit.
You can pull the connectors of the horn till you sort something out.
Good luck

 

[carl2745]

Got factory fitted alarm from new with siren all other electric working fine.