I've figured out how to assemble the main switch, but not how to wire it. I found a switch to fill the hole in the shell, but haven't got any indicator lights. I think I know where to get some that should work with a bit of modification, I just haven't ordered them yet.

If anyone has a wiring diagram from a bike that uses this switch, I'd love to see it. I can figure it all out eventually but it'd be nice to have something to go from!