I used 3 of these rock lights in my hatch.
From my build thread:
I decided to mount them to the inside of the rear hatch to provide more light when the hatch is open. I wired them to the stock rear interior light, so they would come on when the hatch was opened.
This was in my garage which was completely dark except for the hatch lights.
I cut square openings in the plastic so that the lights would sit flush in the panel. All the wires are run behind the plastic panel for a clean install.