well, i did some looking. the heated seat switch pulls a few wires from the main connector up at the front of the console, but the 2 wires that come out of the switch and go back into the harness come out at # 4 on that harness diagram i posted earlier. is something plugged into the #4 spot already on your car or no?
the biggest thing is that the heated seat switch connector (6 way) is NOT available to buy on it's own, unless you buy 650 of them..
you'll likely be best off getting ahold of Ed Morad and getting the console harness for heated seat switch, and the switch. he should be able to get you what you need.