Hello Jay, I am more familiar with the arduino boards but thank you for pointing out i should use the leobardner boards. If you are make a lets say fuel cut off and or fuel tank selector you should connect all 8 positions to the board. That would be the most simple. And for connecting the board to the PC when you plug it in is should recognize the board as either a USB keyboard or game pad device and create inputs for those plugins on the board. If this has seemed confusing in any way please replay ot the thread and i will try to explanin it differently. Thank You Jay