Not too bad to install. Cover is in 2 pieces and you have to pull down the piece over the headliner first. The cover is held to the headliner by four studs with metal nuts. The cover itself is held to the roof of the car by four metal clips over plastic studs, which snap into the roof. I pryed it down with some plastic pry bars that I have. Once it pulled from the roof, 2 of the studs with nuts were pulled through the headliner, but I was able to reach under the headliner and screw them back on.Cool! How hard is it to do the third brake light? I like the push to start logo, that's nice.