Question Guitar wiring mod using 9v and 24v switch ?

[sean.thankscr]

I want to make a 9v and 24v (2x 23ae in series) switch using a sliding switch, preferably using one of those 110v/220v switch or a normal on off on sliding switch (6 pin). Can someone help me with the wiring diagram please…
I know there are shops selling this mod but I can't import it to where I am located.