Just put LED's in the amber reflector, to add to the walkthrough above (added on that forum as well):

The screwdriver goes on the bottom, there is a silver piece that sticks out of the bumper a bit, you jam the flathead behind it and twist, that pops it off the bumper. Then you put the flat head in pointing toward the front of the car on the top piece, right between the reflector and the black piece with two holes that you see in your second photo, then give a bit of a twist to pop the top clip off. The last clip in the front just pops right out then. Pull the light toward the back of the car, not straight out.