3 (2 mono/1 stereo)Channel Input/ One Stereo Output Switcher

[bt63]

Hey,


So I'm trying to make a Pedal, thats 2 mono inputs for Guitar/ Vocals, one (2)Stereo input for a synth, and then send it out through a (2)stereo output. I want be able to switch between the inputs(I primarily use one effects chain for live and recording. I'm basing it off of this diagram I found off of DIypedalguitarparts, but I bought a 4Dpdt for the 3rd input. I'm wondering would I follow the same wiring for the 3rd input thats already laid out by the first two, and how would I wire the stereo inputs/outputs? Could I connect them to the same point on the Dpdt switch?



Thanks