Im actually in the process of making a custom set up for the rear fog light. I have already ordered an extra lower grille so that I can use my current one as a test on. So far, so good!. and just to give you and Idea this is what it will look like>>>>>>>>
2 that will light up when you brake only and obviously 2 that will light up when in reverse. Only thing I am missing now is a cap/cover for the stock location of the fog light. That is what will hold and house the lights. Will have a friend make me one on the c&c machine out of aluminum with holes already cut out.