31-07-2020, 08:49 AM
The horn button screws onto the top advance and retard lever Jon, you could of course make a threaded boss to fit into the main steering tube but that would then rotate with the wheel and stress the cable. Far better to use the outer tube of the advance mechanism with either a bespoke threaded boss soldered to it or a modified lever. There are other way's using something like a post war morris horn push which could incorporate a dip switch but that would again need a bespoke mounting.
Black Art Enthusiast