I pulled the lower seat cushion (very easy) off my 07 X3 without heated rear seats and there aren't any wires or heater elements from the factory installed covers. So it would be more cost effective for me to install the aftermarket carbon heater pads myself.

Does anyone have the part numbers for the OEM rear seat heater switches and the wiring harness? Searched Real OEM to no avail. I prefer to use the OEM switches because they automatically turn off and reset to full off when the ignition key is off where the aftermarket switches do not.