Unfortunatly there is no SDK or open based software for CS  " please make this happen.." !     So i manually added KEY commands in each gau  .XML  so i can control every knob and switch on the plane with joysticks ect, or in my case Overhead panel switches and FSUIPC

For led, I am manually wiring them through the switch with no feed back unfortunatly but will work none the less.  but will make it much immersive, and getting rid of clicking on screen for commands.