Brake, Signal & Marker Lights
Removal & Installation
High-Mount Brake Light
- Remove the two screws retaining the lamp assembly to the rear bumper/ bumper cover.
- Pull the lamp assembly from the bumper/bumper cover.
- Grasp and twist the socket 1 / 8 turn counterclockwise and remove the socket from the lamp housing.
- Open the trunk and remove the luggage compartment trim.
- Remove the eight nuts retaining the reflector to lower back of luggage compartment
- Remove the rear panel reflector assembly from the vehicle.
- Installation is the reversal of the removal procedure.
- Disengage the bulb and socket assembly from the lens housing.
- Gently grasp the light bulb and pull it straight out of the socket.
- Before installing the light bulb into the socket, ensure that all electrical contact surfaces are free of corrosion or dirt.
- Line up the base of the light bulb with the socket, then insert the light bulb into the socket until it is fully seated.
- To ensure that the replacement bulb functions properly, activate the applicable switch to illuminate the bulb which was just replaced. If the replacement light bulb does not illuminate, either it too is faulty or there is a problem in the bulb circuit or switch. Correct as necessary.
- Install the socket and bulb assembly into the lens housing.
- Depending on the vehicle and bulb application, either unscrew and remove the lens or disengage the bulb and socket assembly from the rear of the lens housing.
- To remove a light bulb with retaining pins from its socket, grasp the bulb, then gently depress and twist it 1/8 turn counterclockwise, and pull it from the socket.
- Before installing a light bulb into the socket, ensure that all electrical contact surfaces are free of corrosion or dirt.
- Insert the light bulb into the socket and, while depressing the bulb, twist it 1/8 turn clockwise until the two pins on the light bulb are properly engaged in the socket.
- To ensure that the replacement bulb functions properly, activate the applicable switch to illuminate the bulb which was just replaced. If the replacement light bulb does not illuminate, either it too is faulty or there is a problem in the bulb circuit or switch. Correct if necessary.
- If applicable, install the socket and bulb assembly into the rear of the lens housing; otherwise, install the lens over the bulb.
- Park the vehicle on level ground, so it is perpendicular to and, facing a flat wall about 25 ft. (7.6m) away.
- Remove any stone shields, if equipped, and switch ON the lights.
Loosen the mounting hardware of the lights so you can aim them as follows:
- The horizontal distance between the light beams on the wall should be the same as between the lights themselves.
- The vertical height of the light beams above the ground should be 4 in. (10cm) less than the distance between the ground and the center of the lamp lenses for fog lights. For driving lights, the vertical height should be even with the distance between the ground and the center of the lamp.
- Tighten the mounting hardware.
- Test to make sure the lights work correctly, and the light pattern is even.
- Disconnect the negative battery cable.
- Unpack the contents of the light kit purchased. Place the contents in an open space where you can easily retrieve a piece if needed.
- Choose a location for the lights. If you are installing fog lights, below the bumper and apart from each other is desirable. Most fog lights are mounted below or very close to the headlights. If you are installing driving lights, above the bumper and close together is desirable. Most driving lights are mounted between the headlights.
- Drill the needed hole(s) to mount the light. Install the light, and secure using the supplied retainer nut and washer. Tighten the light mounting hardware, but not the light adjustment nut or bolt.
- Install the relay that came with the light kit in the engine compartment, in a rigid area, such as a fender. Always install the relay with the terminals facing down. This will prevent water from entering the relay assembly.
- Using the wire supplied, locate the ground terminal on the relay, and connect a length of wire from this terminal to a good ground source. You can drill a hole and screw this wire to an inside piece of metal; just scrape the paint away from the hole to ensure a good connection.
- Locate the light terminal on the relay; and attach a length of wire between this terminal and the fog/driving lamps.
- Locate the ignition terminal on the relay, and connect a length of wire between this terminal and the light switch.
- Find a suitable mounting location for the light switch and install. Some examples of mounting areas are a location close to the main light switch, auxiliary light position in the dash panel, if equipped, or in the center of the dash panel.
- Depending on local and regional regulations, the other end of the switch can be connected to a constant power source such as the battery, an ignition opening in the fuse panel, or a parking or headlight wire.
- Locate the power terminal on the relay, and connect a wire with an in-line fuse of at least 10 amperes between the terminal and the battery.
- With all the wires connected and tied up neatly, connect the negative battery cable.
- Turn the lights ON and adjust the light pattern, if necessary.
All 1988-89Town Cars are equipped with sealed-beam halogen headlights. All 1990-99 vehicles are equipped with aerodynamically styled headlight bodies using replaceable halogen bulbs.
On 1989-91 vehicles, the headlights can be aimed using the adjusting screws located above and to the side of the headlight bulbs. A rough adjustment can be made while shining the headlights on a wall or on the rear of another vehicle, but headlight adjustment should really be made using proper headlight aiming equipment.
On 1992-98 vehicles, the aerodynamically styled headlights necessitate the use of headlight aiming kit 107-00003 or equivalent. The adjustable aimer adapters provided in the kit must be used to aim the headlights. Adjustment aimer adapter positions are molded into the bottom edge of the headlight lens. Set and lock the adjustable adapters, attach each adapter to its mechanical aimer and aim the headlights according to the instructions in the kit.
Headlight aim adjustment should be made with the fuel tank approximately half full, the vehicle unloaded and the trunk empty, except for the spare tire and jacking equipment. Make sure all tires are inflated to the proper pressure.
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.
Horizontal and vertical aiming of each headlamp assembly is provided by two adjusting screws which move the housing against the tension of a coil spring. There is no adjustment for focus; this is done during headlight manufacturing.
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 1 / 2 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 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 that 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.
- Make sure the headlight switch is in the OFF position.
- Lift the hood and remove the trim panel located above the headlight bulb, where necessary.
- Rotate the bulb retainer counterclockwise (when viewed from the rear) about an 1 / 8 - 1 / 4 turn.
- Carefully remove the bulb from the socket in the reflector by gently pulling straight out of the socket. Do not rotate the bulb during removal.
- Detach the electrical connector from the bulb.
- Attach the electrical connector to the bulb.
- Insert the glass envelope of the bulb into the socket while aligning the locking tabs.
- Rotate the bulb retainer 1 / 4 turn to lock it in.
- Turn the headlights on and check for proper operation.