[abraxas]

I couldn't find the Yamaha switch so I used a Fender SS. The wiring is the same, it's just a little bit more difficult to solder.

Keep in mind that you may have to slightly enlarge the bottom of the control cavity, where the switch sits. I avoided doing this but just barely.... If I was to do it again today, I would definitely enlarge it to avoid accidental unsoldering of the wires or short-circuits.