Fancy name for power window assembly. I'm sure much is written on this topic. I just had to replace mine. Found the regulator at O'Reilly's for $96.99 plus tax. Took an hour to install. Found my motivation from this link: http://www.fordf150.net/articles/idx...or--Motor.html
What a pain by the way. Riding down the road hear a big pop and the window falls inside the door panel all the way to the bottom.