get under the truck and look to the sides of the fog lamp, you will see two set screws remove these and unhook the adjuster and then remove the whole unit, I forget how it comes apart but you need to seperate the housing from the lens to replace the H3 bulb, one of mine was not working so when I removed them from the truck it was not to replace them. most people remove the lamps and trim the front bumper end caps, better clearence in the front and looks better too -Andy