Mr Bacchus said:Hi Paul,
I've done a bit of digging and this can be done but its going to be some work to get it how I know you will want it!
We are using Amphenol Terrapin connectors (info on the web) in similar applications (push/pull connect/disconnect) but they are mounted in bespoke machined housings
Honestly speaking I think you might be better doing a remote horn or backtracking a bit and getting a pre-wired wheel mount which I have seen.
I could probably get sample Amphenol Terrapin connectors if you wanted to try to make an installation.
Happy to help if I can
All the best
how about using a 3.5mm headphone jack and socket - both rigidly mounted on a machined boss?
would work a treat...