Mazda 323/MX-3/626/MX-6/Millenia/Protégé 1990-1998 and Ford Probe 1993-1997

Headlights

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REMOVAL & INSTALLATION



See Figures 1, 2, 3 and 4


CAUTION
The halogen headlight contains pressurized gas. It may shatter if the glass envelope is scratched or dropped. Handle the headlight carefully. Keep the headlight out of the reach of children.

  1. Disconnect the negative battery cable.
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Fig. Fig. 1: To change a headlight bulb, first remove the bulb cover. Headlight lens assembly shown removed for clarity



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Fig. Fig. 2: Disengage the bulb retaining clasp ...



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Fig. Fig. 3: ... and pull the bulb from the lens assembly



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Fig. Fig. 4: Disengage the wire harness connector from the bulb

  1. Turn the plastic surrounding ring, or cover, located in the back of the headlight lens assembly and slide it backwards (ring) or remove it (cover).
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  3. If necessary, unfasten the bulb clasp.
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  5. Remove the bulb from the headlight housing.
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  7. Unplug the bulb from the electrical connector.
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To install:
  1. Engage the electrical connector to the headlight bulb, caution should be taken not to touch the bulb, as oil from skin can cause the bulb to burn out prematurely.
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  3. Install the bulb into the headlight assembly.
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  5. If necessary, fasten the bulb retaining clasp.
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  7. Install the retaining collar or cover and securely tighten it.
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  9. Connect the negative battery cable.
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AIMING THE HEADLIGHTS



See Figures 5, 6, 7, 8 and 9

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.


CAUTION
About once a year, when the headlights are replaced or any time front end work is performed on your vehicle, the headlight should be accurately aimed by a reputable repair shop using the proper equipment. Headlights not properly aimed can make it virtually impossible to see and may blind other drivers on the road, possibly causing an accident. Note that the following procedure is a temporary fix, until you can take your vehicle to a repair shop for a proper adjustment.

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 information, 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:

  1. 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.
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Fig. Fig. 5: Most models have two adjusting screws. One for vertical and one for horizontal aiming



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Fig. Fig. 6: Other models, such as the Millenia, are adjusted using gear assemblies located at the back of the headlamp



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Fig. Fig. 7: Mazda vehicles also have a built in level (arrow) on the headlight assembly. Adjust until the bubble is within 2 lines from center

  1. 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.
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  3. Turn the headlights ON and mark the wall at the center of each light's low beam, then switch on the brights 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.
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Fig. Fig. 8: Low-beam headlight pattern alignment



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Fig. Fig. 9: High-beam headlight pattern alignment

  1. 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.
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  3. 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.
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  5. Have the headlight adjustment checked as soon as possible by a reputable repair shop.
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