We just wire up left trigger, right trigger, the Sync button, and the PnC port in the Matrix, and also one wire to the 2.0 volt regulator to monitor for powerup. I think it's a 10-wire install at the moment. The matrix triggers are 'backwards' from CG1/CG2, i.e. when trigger is pressed the voltage across the pot is like .2v, when the trigger is released the voltage is ~1.6v. I'm guessing that for wired controllers it''s just a matter of making up a wiring diagram and testing out either the matrix all-in-one code or the sleeper all-in-one code, and then finding a point somewhere so the chip can 'listen' for when the controller is powered up (I have the chip put itself to sleep to save on power)