Im installing power / signal / heat mirrors in my 2009 FX4. The turn signals work but I need to make the heated function work. I know the truck is wired for it but Id like a diagram to help me figure out which wire I need to power up on the mirror to turn on the heater. I was gonna buy the new heater controls, but I may just use a separate switch. I cant see spending over 200 dollars on a new heater control just to get a defrost switch to activate the mirrors. Besides, I know on the older models you had to add a new fuse panel with a relay for the defrost. Does anyone know if that is the case with the 09's as well? Any help or insight would be appreciated. Thanks

 

In 09 Ford did away with the fuse block and decided to call it a "smart junction box" and all of the trucks have the same one (only one choice in the catalog) So it looks like either you can put in a new heater control or as a diy just wire in a switch and relay.

 

OK, thanks for the info. So if I would just add the new heater control would I also need a relay or is it already there? I believe the part number I need for the heater control is AL3Z-19980-B. Can you verify that and see if I need a relay? I would be more than happy to order from Tasca as a way to thank you for the help. Please advise. Thanks

 

Also, that part number wont come up on the Tasca web site.... FYI