the Fly Clone Project

hi, i have a parker pm-24 i need the switch for piezo to humbucker&piezo to humbucker.i got a switch i thought would work wired it the same way but it wont do piezo & humbucker together.i have one or the other.do i need a on,on,on, or a on,off,on?

It should be on/off/on. Is the Fishman PowerChip preamp being used?

Here’s an old article about replacing the mag/piezo switch: