Ford Mercury Villager 1997 Owner's Manual page 320

Lights and Bulb Replacement
It is a good idea to check the operation of the following lights
frequently:
headlamps
high-mount brakelamp
tail lamps
brakelamps
cornering lamps
hazard flasher
turn signals
license plate lamps
The alignment of your headlamps should be checked if:
oncoming motorists frequently signal you to turn off your
vehicle's high beams when you do not have the high
beams on
the headlamps do not seem to give you enough light to see
clearly at night
the headlamp beams are not pointed slightly down and to the
right
Headlamp Bulb
The headlamps on your vehicle use replaceable bulbs. When the
lamp burns out, simply replace the bulb, rather than the
whole lamp.
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