Technical Horn problems

[colche]

Hi All,
Happy bank holiday to you all (uk).
I have a mysterious horn problem on my Fiat Ducato 2.3 multijet 2018.
The horn from the steering wheel does not work when pressed. I looked at the relay switch in the engine compartment and when i press that, the horn works?
I have tried looking for a short but no luck.
I have also changed the earth strap in the engine for a new one.
Any ideas would be gratefully accepted.
Many thanks

 

[Ducato Rich]

Mine was just a bad connection on the horn itself. Clean them up, put them back on and seal with paint.