yep 1 piece. Didnt think about it, but do you have barn doors? Mine is not, i had to undo screws and have liftgate all the way up and pull the 3rd light through the hole in the gate, well the cutout for it anway. Kind of hard, but you wont break it, ive pulled pretty ******* mine and its still good. The rubber around the light is what is holding it up.