All you need to do is take the existing output wire and connect it to lug 3 of a 100K pot, lug 1 goes to ground and lug 2 becomes your new output. If you reply to this email, your message will be added to the discussion below: http://guitar-fx-layouts.42897.x6.nabble.com/Master-Volume-tp26566p26567.html To unsubscribe from Master Volume, click here. NAML