I just had my FD vehicle re-tinted yesterday and was going to have the guy cut out a section of the rear tint for my Feniex cobra 800 but he made a valid point. My bar is mounted on brackets and sits back a little bit from the window so it would like kinda weird cutting the tint out. I opted to just leave the rear window at 15% which the light still punches right through fine. I think unless your lights are mounted right up against the window then cutting the tint out won't look right. Not that this helps at all with your question, just throwing this useless bit of info out there lol