If you have a rear window defrost button that is your heated mirror button. See if it works.

 

I do not have a Defroster button on my truck I have a manual slider without defrost.

 

Just bought these

http://www.ebay.com/itm/401171278113


A friend of mine hit a mailbox with the passengers side mirror and my inspection is due end of the month so here's hoping I don't have to do to much.. I have an 07 FX4 with power mirrors but nothing else.

 

New mirrors where plug in and everything worked.. I lack the defroster button to turn on the mirror defrost but the blinkers and puddle lights worked without modifying any wire locations in the plugs.. thinking the seller or manufacture has done this to simplify install.





New Tow Mirror Install