The bottom pop bumper didn't work on my space station. However, if I went into test mode it would work, so I simply purchased a new switch stack for it. As I was replacing the switch stack, three short yellow wires fell to the bottom of the cabinet. Obviously, I had some weak solder joints. I am assuming it's a daisy chain between the 3 pops, but which lug of each switch stack do they belong.

Thank you.