Heated Seats?

[Ohoopee]

So I got my new climate control unit in the mail today and was out installing it.  When I removed the snow and torc off button interface, I noticed that there were three cables going to this unit but only one was plugged into anything.  The other two were going into two plastic removable doors on the unit...but were just sitting in little slots which appeared to be designed to hold them.  Only the middle cable was connected which appears to before the snow and torc off buttons which begs the question.  I know that some models of this same car had heated seats.  I also know that the heated seats button was on this same device.  I assume these two extra cables are for the heated seat buttons.  So my question is...if I get these buttons, will I have heated seats?  Do my seats have the heating element in them already?  I looked under my passenger seat and there appears to be two cables connected to the bottom of the seat.  One has to be the seat belt signal when weight is in the passenger seat but could this other one before a heated seat unit?  See pictures I took of my unit below.

[Farqui]

Under your seat, is one of the cables yellow? I suspect it is as it's for the air bags.

[Ohoopee]

Didn't think about the airbag...yes one is yellow.