#1
Hi there, bought my Jsx 2nd hand and it's in 100% working order.
Only problem is I dont have the footswitch to change channels..
Is it a specific JSX one? or can i use any 3 channel footswitch?

no links to craigslist/ebay outside of the UK please!
#2
Peavey uses a special 7 pin cable so you can't use any switch. I think I found once something about making a 1/4" to 7 pin cable with what wires go where, but you'd need to at least find the 7 pin connector for that...
#3
the 6505/6505+/xxx/jsx/3120/xxxii all use the same footswitch. I actually just sold one few weeks back.
Ibanez SIR27
Pod HD500x

RIP:
Mesa Boogie Roadster 2x12 combo
Cmatmods analog chorus, phaser, tremoglo, signa drive, butah, and deeelay
walrus Audio Descent