I recently installed Sylvania Star-Bright head lamps, no easy chore with the instructions in the owner’s manual. I now want to replace the stock fog light with Star-Bright as well but there is nothing in the manual concerning these lamps. I have examined the fog's and can't quite figure out how to get them out, does the whole thing come out as a unit or does the bulb twist out, I don’t know does anyone know how this is done.