trying to make the horn work, so far, having identified that nothing was wired up and the switch in the centre of the wheel is broken…

wire from circuit board to horn, ok.
wire from horn to switch, ok.
switch ok.
wire from switch to presumably earth, but where? Anywhere on the body? same place as something else is earthed (cig lighter earth is east access)

sorry for the really simple electrical question, i dind't pay much attention to electronics in school, and so have very little understanding beyond common sense, and thats a bit lacking too!

Thanks all!

Usually on a vehicle electrics the body is ground. wires usually taken to a common ground point but in theory anywhere on the bodywork is fine.

cheers. sorted now. honk honk!