Has anyone installed a power rear window to replace the standard one.? Where do you source the power and how difficult was it?

 

I think you would need to buy the entire power window assembly. I think the non-power windows are fixed and do not move. I took one apart when they first came out and did not add power windows to the rear doors (if vehicle is extended cab). If the vehicle is a true four door model then just add a 4 door power window kit and its a easy install.