Here are two shots of mine. The first has the headlight out. You can see the only thing in the fender is the big black plastic housing. The next shot has the light installed and it is held in place by the flimsly metal ring that also allows you to adjust the headlight angle with the two screws at the top and side. You then put the nice chrome ring around all of this and it is secured by one screw at the base, around four o'clock.
