Very easy to fit.
You may have to remove the black surround to allow the door to open with the tailgate glass raised.
Then remove the plastic door trim (four screws at bottom). Undo two 10mm bolts, remove glass.
Then undo 4 bolts and remove motor and mechanism.
The refitting of glass is not too critical - you can test that it raises squarely and adjust if necessary. (The glass is 'clamped in')
Good luck
Regards,
Steve