Driver Door

A) Ease off handle 1, it goes towards the outside of the car (no screws).

B) Ease part 2 from all it's edges. I normally use a metal ruler or flat screwdriver but cover it in a cloth so you damage anything. There will be one plug on the underside of part 2, this is for the window unit. It's easy to take off.

C) Once you do this, replace the original part with the new part, plug the wire back on and put everything back. No screws or anything like that, perfect!

Passenger Door

A) Ease off handle 1 from 2. I use a flat screwdriver or metal ruler but make sure you cover them in a cloth so you don't damage the parts. It's easier to start from the bottom-left corner.

B) Replace the old with the new... and voila, no screws or anything, it just pops out!