You know, it is that tiny light behind the factory roll bar on the driver's side, that doesn't seem to work. Took me a while to figure out that you needed to have the parking lights on (it is fed from the main exterior light relay). Kind of useless though, for example if you are camping or sleeping in back and need some light, you have to run around to the front, turn on the parking lights, all to have a puny 3W light in back. Add to that the the deck light is essentially "on the deck", so if you have anything in back, the light will likely be blocked. The only cool thing about the deck light is that it has both front and rear switches, wired up like you would have in a hallway with a switch at each end. Turn the light on with one switch, walk down the hall and turn the light off with the other switch. So, while this deck light is sort of lame, it has promise.