1999 Mercury Villager Owner's Manual - Page 226

Maintenance and care Do not remove lamp bulbs unless they will be replaced immediately. If a bulb is removed for an extended period of time, contaminants may enter the lamp housings and affect performance. Replacing headlamp bulbs To remove the headlamp bulb: 1. Make sure headlamp switch is in OFF position, then open the hood. 2. Disconnect the electrical connector from the bulb by pulling rearward. 3. Remove the bulb retaining ring by rotating it counterclockwise (when viewed from the rear) to free it from the bulb socket, and slide the ring off the plastic base. Keep the ring to retain the new bulb. 4. Without turning, remove the old bulb from its socket by gently pulling it straight back out of the lamp assembly. To install the new bulb: Handle a halogen headlamp bulb carefully and keep out of children's reach. Grasp the bulb only by its plastic base and do not touch the glass. The oil from your hand could cause the bulb to break the next time the headlamps are operated. 1. With the flat side of the new bulb's plastic base facing upward, insert the glass end of the bulb into the lamp assembly. Turn the bulb left or right to align the grooves in the plastic base with the tabs in the lamp assembly. When the grooves are aligned, push the bulb into the lamp assembly until the plastic base contacts the rear of the lamp assembly. 226