hey all.. this is a pretty obvious question to ask.. but i just wanna be sure.. im gunna attempt to tint my taillight on the weekend... do i take the lights off and spray the outside or the inside of the lens??

outside of the lens mate,

take them both off and sit them side by side when your painting so you can get them tinted the same level.

do lots of light coats, letting them dry in between. once youve acheived your desired look. then do a clear coat if u dont like the matt look.