I think, don't hold me to this. But if you get a long enough bolt the same thread as the bolts that hold the fog in place just longer rough guess 3" you take out the 3 OEM bolts that hold the lamp in place that line up with the holes in the cover. And then you use the holes and the longer bolts in the existing holes to tighten them up. but might be just the bottom left one that lines up thats how it was with my old one's. But if you have no intention of ever removing them again Tigerseal will do that :)