The way I understand it, from the dealer FWIW, is that there are 2 differant wire harness's they can install, you may have the right one, or may not. Also, the heat switch is in the heat/cooling cluster, and you have to buy the whole cluster at a cost of $153+tax, or you can do what I did, and use a lighted rocker switch, and installed it in the door under the power mirror switch for a cost of $3.
Later, Rob