02 C70 Convert - Driver side heated seat problem

[tsc1015]

Does anyone have a wiring diagram for the heated seats. I have checked the voltages at the switch, the front connector of the seat and then also at the back of the seat. the switch and to the seat is good. In the back I get voltage going into the seat but it looks like it should return back to the connector, and it does not.

Also, if anyone has any good sources or suggestions for new elements and leather covers I would appreciate it. Thanks