I used an exacto knife blade to carefully shave the clear plastic and glue from the inside of the headlight housing. Then carefully popped the lens off by pushing on the remaing lens mounting posts from the inside. On my car there did not appear to be any glue holding the edges of the lens to the outside of the body shell. If there is glue then you will have to use an exacto blade to break the seal between the lens and the body shell. If you are careful the lenses come out fairly easily. I have fitted the Slot.it headlight kites (oops Fruedian slip, I also am an avid kite flyer, I actually hold an unofficial world record for most number of box kites flown on a single line, 161 ) into 5 other Slot.it cars. I have two Slot.it Ford GT 40's that I chipped with Scalextric F1 solder in chips that I intend to install headlights, rear taillights (wired to the headlights) and brake lights. The red GT 40 has two round tail lights on one it has an amber light above a red light, from this I assume that the upper amber was the tail light and the lower red was the brake light. The other GT 40 has both red in the upper and lower position and based on the previous theory I am going to again assume upper is a side light and the lower is the brake light. For the headlights I am going to use a pale yellow LED rather than a bright white one, as the GT 40's used incandescent headlights bulbs in their day, correct me if I am wrong here.