limited leather heated seats in 03 wrx help

[CSwrx22]

I am looking into putting a set of 06-07 wrx limited leather heated seats into my usdm 03 wrx sedan. Now I don't know if this is a plug and play kind of thing. I have been reading that possibly can get the oem harness for it to work. But where does the own harness plug into and I did see a couple of people saying window switches might need to be swapped to. Where can I check to see if I can even plug the new harness in? Thanks in advance. Also if anyone has this harness and willing to part ways with it that would be awesome.

[Mikie13]

I haven't done this or have never seen this done to an older bugeye, but my guess is that the 03 WRX probably didn't come wired for heated seats. So given that, you'd probably have to splice into a power source and your own switch for it to work. Just saying.