I never did try it on my taillights, but here’s an update on the headlights, lasted about two years before they were cloudy enough to bother me. Not as bad as in the picture two years ago but enough for me to redo it today.
Congrats, nice looking MJ.
The exterior color is Dover Grey Metallic Clearcoat, the firewall tag should have a PS4 code (or possibly CC) at the lower left.