Ford vehicles feature two types of headlights: large one-piece lamps, which are called sealed-beam headlamps; and composite headlights, which have bulbs that plug into the glass housing from the rear of the headlight. Broken sealed-beam headlights cannot be repaired. Composite headlights, however, can be replaced in just a few minutes.
1. Determine the type of headlight: a two-light system, which will have low and high beams in one unit; or a four-light part system, which has separate low and high beam lights. Sealed-beam headlights can be either square or round.
2. Remove the headlight housing trim by unscrewing the screws holding it in place. Remove the retaining ring by unscrewing the retaining screws while holding the back of the lamp in place. Lower it from the frame and unplug it from the back (three prongs on an two-light system; two prongs on a four-light system). Do not remove the two aiming screws, one on the top or bottom of the housing unit and another on the side. Both are spring-loaded and are not holding the retaining ring in place.
3. Clean the trim, retaining ring and socket that the new lamp will sit in. Make certain there is no corrosion and the wires on the plug are in good condition.
4. Plug in the new headlight and push the light into the socket. Make certain the writing on the headlight is at the top when you are pushing the light into the socket, which has grooves to navigate the lamp into place, guiding bumps on top of the lamp into the socket.
5. Screw the retaining screws into place, while holding the new headlight in place. Screw the trim back into place.
Tips: Spray the retaining screws with a penetrating solvent to loosen them before unscrewing them, as these screws are easy to strip.