Want horn, have removable steering wheel. Hmm.
I picked up this little gadget quite a few months ago. It's a wireless RF switch, and it's cheap enough that I don't mind messing with it:
http://www.amazon.com/Button-Wireless-Control-Receiver-Controller/dp/B00JL3J594
First thing I did was remove the soldered on switch and solder in my own wires in p
Gooped up the wire holes:
Soldered to the horn switch in the steering wheel and tested it:
Insert into removable steering wheel:
Receiver unit... More to come on this guy if I don't ruin it: