the first time I replaced the headlights,. I removed the front end off the scooter,. and had trouble getting the bulb in , so I removed the hard board lock in the head light and put it on the bulb , and screwed it back on 3 little screws you need a magnetic screw driver or you will lose the screws, very small screws, after changing from OEM bulbs to HID bulbs to LED bulbs they go in easy,.