This is a great mod for those of you that remember the old mechanical sequencers on fords of long ago. Its a timeless classic and looks even better on the new Stang ! I have a lot of people tell me that is looks really great. Installation is as easy as opening the trunk, unscrewing the rear plastic panels unbolting your light assemblies and plugging in the unit ( for both sides ) Believe me its plug and play !! Make sure you place a towel on your bumper as you push the taillight assembly out, the bolts are long and will scratch the finish on your bumper. (Almost got me )