I want to add a rear window with defrost to my sunfire. What do I need to do to make it work? I already have the window, I just want to know what else I need to do. Any help will be appreciated.

You'll have to add the wiring to hook it up. I've hardly seen any J-bodies without the rear defroster... so it shouldn't be hard to find one in a wrecking yard that has the bits you need. There's some heavy gauge wiring that goes from the fuse panel to the HVAC panel in the dash, then back thru the dash to the left side of the car, to a green connector behind the carpet on the floor, driver's side kick panel. Then follows the wiring harness back to the defog grid on one side... the other side goes to ground.

Thanks a lot for the help bro.