Putting tow mirrors on my truck that are heated. My mirrors I have now are not. I have rear window defroster. Will the heated mirrors just plug in to harness or is this just going to be a pain in the butt? Need a switch or can it be wired into rear window defroster? Thanks

 

PITA, wire MAY be run through the Multipin connector in the door up to the harness, though i dont remember that being the case, pretty sure its only the interior lighting wire used for puddles thats run.

Regardless, doesnt hurt to check it out, pull off the door panel, check out your wiring diagram, see if the wire is there, splice and run up through with mirror harness.