Seat warmer and occupancy sensor

[Perrier]

With my driver seat warmer acting up (hot spots burned a hole through leather) I am looking for repair alternatives.

Called the dealer and he says the replacement contains the leather, heating pad, and sensors including occupancy sensor.

So I am wondering if I disconnect the wires from the original heating pad remove it and replace it with an aftermarket pad, I need to know the function of each of the wires going into it in order to properly hook up the new pad.

Has anyone mapped out the wires goi g into the heating pad to get it functional with The rest of BMW systems?