what does it take are the wires allready there just have to pick up the glass or do i have to run wires and what not?

what year?

Doesn't matter. Paaaachingggg another shot from the hip eh Hans?

Rogers..the wiring is not run if the heated mirrors didn't come on the car from the factory. In my experience you can add this as the rear defroster is the trigger for the heated mirrors. It would take tapping into the defroster line at the dash and running the power into the door (this is tough on the driver side especially) due to the wiring harness routing.

Power from the rear defroster and ground is all this takes in addition to the correct mirrors.

its a 97 buick sabre but i am to lazy to run the wires i was hopeing that the wires were there and i just need the glass Thanks guys!