I had to call around for this same thing today. They said if you have the piece of glass, the door panel needs to be removed (obviously). In my case, everything is electric and this unplugs from the door panel. The only issue with doing it yourself is the clips, which may require a special tool when you remove the panel or they can break.
locks out rear door window switches
To install a new window regulator on a MGRZ driver's door, remove the door panel and the wiring attached to the power window mechanism. Remove stereo speaker from the inside door and the window glass. Remove the old window regulator and replace with new.
That's the door on the rear of the Explorer , where you can open the window separately or open the liftgate with the window closed
remove door panel, install new window
How do I install passenger side mirror 2010 Ford Explorer
You must remove door panel and replace window regulator.
The passenger window on a windstar is best installed by a professional. However, if you have some auto repair experience, you can easily remove the door panel on the door by removing the screws and then you will be able to install the new window.
How do I install passenger side mirror 2010 Ford Explorer
install a new latch
( 21 ) U.S. gallons on the 2000 Ford Explorer four door
Inside the door, on the back of the door latch/lock assembly.
Remove the inside door panel. Slide the new glass up through the window opening. Set the new glass in the window track.