REMOVAL & INSTALLATION
1989-93 Models (Sealed Beams)
See Figure 1
- Open and secure the hood.
- Remove the headlamp trim bezel retaining screws and remove the bezel.
The parking lamp assembly is attached to the bezel.
- Remove the parking lamp and turn signal bulb sockets from the bezel.
- Set the bezel down in a safe place.
- Remove the screws from the retaining ring around the headlamp.
- Pull the headlamp out of the front of the vehicle.
- Unplug the headlamp electrical connector.
- Plug the headlamp connector into the headlamp assembly.
- Install the headlamp into the front of the vehicle.
- Install the retaining ring and tighten the screws.
- Pick up the bezel and install the sockets into the parking lamp on the bezel.
- Install the bezel and lamp assembly into the front of the vehicle.
- Tighten the retaining screws on the bezel assembly.
- Lower the hood.
See Figures 2, 3, 4, 5 and 6
- Open and secure the hood.
- Press in and pull up on the headlamp release levers to remove the headlamp assembly.
- Unplug the electrical connector from the bulb/socket assembly.
- Unfasten the locking ring which secures the bulb assembly, then withdraw the assembly rearward.
- Position the replacement halogen headlamp bulb and secure it with the locking ring.
- Plug the electrical connector into the headlamp.
- Place the headlamp assembly into place and secure the levers.
- Close the vehicle's hood.
AIMING THE HEADLIGHTS
See Figures 7, 8, 9, 10 and 11
The headlights must be properly aimed to provide the best, safest road illumination. The lights should be checked for proper aim and adjusted as necessary. Certain state and local authorities have requirements for headlight aiming; these should be checked before adjustment is made.
Headlight adjustment may be temporarily made using a wall, as described below, or on the rear of another vehicle. When adjusted, the lights should not glare in oncoming car or truck windshields, nor should they illuminate the passenger compartment of vehicles driving in front of you. These adjustments are rough and should always be fine-tuned by a repair shop which is equipped with headlight aiming tools. Improper adjustments may be both dangerous and illegal.
For most of the vehicles covered by this guide, horizontal and vertical aiming of each sealed beam unit is provided by two adjusting screws which move the retaining ring and adjusting plate against the tension of a coil spring. There is no adjustment for focus; this is done during headlight manufacturing.
Because the composite headlight assembly is bolted into position, no adjustment should be necessary or possible. Some applications, however, may be bolted to an adjuster plate or may be retained by adjusting screws. If so, follow this procedure when adjusting the lights, BUT always have the adjustment checked by a reputable shop.
Before removing the headlight bulb or disturbing the headlamp in any way, note the current settings in order to ease headlight adjustment upon reassembly. If the high or low beam setting of the old lamp still works, this can be done using the wall of a garage or a building:
Park the vehicle on a level surface, with the fuel tank about
full and with the vehicle empty of all extra cargo (unless normally carried). The vehicle should be facing a wall which is no less than 6 feet (1.8m) high and 12 feet (3.7m) wide. The front of the vehicle should be about 25 feet (7.7m) from the wall.
- If aiming is to be performed outdoors, it is advisable to wait until dusk in order to properly see the headlight beams on the wall. If done in a garage, darken the area around the wall as much as possible by closing shades or hanging cloth over the windows.
- Turn the headlights ON and mark the wall at the center of each light's low beam, then switch on the bright lights and mark the center of each light's high beam. A short length of masking tape which is visible from the front of the vehicle may be used. Although marking all four positions is advisable, marking one position from each light should be sufficient.
- If neither beam on one side is working, and if another like-sized vehicle is available, park the second one in the exact spot where the vehicle was and mark the beams using the same-side light. Then switch the vehicles so the one to be aimed is back in the original spot. It must be parked no closer to or farther away from the wall than the second vehicle.
- Perform any necessary repairs, but make sure the vehicle is not moved, or is returned to the exact spot from which the lights were marked. Turn the headlights ON and adjust the beams to match the marks on the wall.
- Have the headlight adjustment checked as soon as possible by a reputable repair shop.