Thread: Horn!

For some reason when I put the lights on full beam (with or without spotties) the horn sounds intermittently when the vehicle goes over bumps. I thought perhaps a wire had rubbed bare so inspected that behind the dash and in the front wing where the horn is, and could not locate the fault.

Any ideas what to try next?

thanks

Sounds suspiciously like an earth return problem. If the headlight earth is dodgy, maybe the bumps are interrupting its continuity. I don't know where all the wiring is, but maybe, somehow, the headlights are occasionally earthing themselves through the horn.

You see this type of behaviour frequently with poor earths in tail-light assemblies.

I'd double check the headlight earth connections.

Cheers,

Lionel