what im talking about is on the 10's theres a small lip that sticks out under the light on either side that shines almost straight down. cannt remember exaclty which ligt is is on either side but youll figure it out. anyway, this lip is there to keep glare off the windshield, but its not sufficient. just take you a piece of wether stripping that is the type that slips onto a door jam, and slip it onto the lip to make it stick further out to block the glare on the window. the 50 doesnt have this lip, so you can just get some 3M glue and glue the stripping below the light to achieve the same thing.