…. of the car kind before you jump to conclusions!

We had an embarrasing moment this week when we hit a bump in the road and the jolt caused the horn to activate – and stay on! After much fiddling with the horn push it eventually stopped. The Morgan is a 2016 Plus 4 Gdi.
Two schools of though why it happened:-
1. The connections on the horn push are too close together causing them to connect.
2. Is there are relay which could have been triggered by the jolt? If so, where is it located?
Any other thoughts would be gratefully appreciated.
Until I get the the bottom of it I intend to temporarily remove the fuse (or, at least, identify it so I can remove if it happens again). Here's an image of the fuse boards. Can anyone kindly point me towards the right fuse? Will it's removal affect anything else?
Many thanks.

[Linked Image]


Regards
Alan
AP08 MOG
2016 Plus 4 GDi - Mazda Soul Red Metallic