Got mine in on Friday - the dealer had their window guy install it and seal it, so there should be no leaks.
I have a mopar hard tonneau cover - it JUST clears the light.
Happy with it - some of the pics made me unsure if I would like it sticking out as much as it does, but to fork over the money for a 3rd brake light, I like having it more noticeable - gives it almost the spoiler look to the cab to have it protruding...
Main reason I ordered one is because the guy who painted my tail lights didn't listen to me and painted over the cargo lights of the 3rd light, so my bulbs were dim.
That being said, I have the expensive LASFIT bulbs that WILL NOT cause fob interference if anyone is interested in purchasing...they were $50 from LASFIT...only been in use for about a month.