For the headlight bulb, is it rotated to the right position? If not, it won't sit properly. For the fog light, get your head under the bumper and look up at the fog light, there is a big nut there that holds it on to the bumper. Undo that nut and the fog light comes out from the front. Then there are two screws on the sides of the fog light on the back. As stated earlier, hope that they hav'nt rusted! Take those screws out and the assembly will come apart giving you access to the H3 bulb for your foglight.