you're supposed to be able to just unscrew the three screws at the bottom of either foglight and drop the bulb assembly down and out, but most likely yours are rusted to a healthy seize and you will have to completely dismount the foglight in it's entireity (by unhooking the two ten mm bolts) and use a vice to remove the offending screws. Mind you, the aftermarket foglights have a tendancy to burn out frequently.