So I've just fitted one of these and it works a treat. Only question is how to adapt it so that the horn will fit?

http://www.carbuildersolutions.com/uk/quick-release-steering-wheel-boss-gold-anodised

Er, doesn't look like it will... How about a little button on your dash?

I picked up one of these second hand but unused recently (hence the colour):

nrg hub

and it comes with necessary attachments for routing your horn in (which I have done). If it doesn't have appropriate contacts built in you're going to either have to risk modifying what you have or accept a horn button elsewhere - on your stalks or dash mounted switchgear.

If you want electrical connectors then you need a QR boss with a built in connector.

You may be able to find one that fits the boss you have and do it yourself. The sort of connector you need is a Lemo type (B series I suspect)....I have a pair here for my QR but mine came with them fitted so not sure what part numbers you need. I have had a quick look here and you may find that something like a EGG socket and a FAG plug is what you need but again you will need to check what size to suit your boss.

Lemo used to be difficult to get unless you had a trade account but I see loads on ebay now so not impossible

edit to add that this is the unit I have and you can sort of see in the picture how the connectors are fitted. http://go-race.co.uk/shop/4582749947/electrical-quick-release- steering-hub/9459124

[Edited on 15/7/15 by peter030371]