Ford 1997 Aerostar Manual page 273

NOTE: Do not disturb the aim adjusting
screws.
5. Pull the headlamp away from the vehicle
and remove the electrical connector by
pulling rearward.
6. Unsnap the bulb retaining wire and carefully
remove the bulb assembly from its socket by
gently pulling it out without turning it.
Installing the headlamp bulb
1. With the flat side of the bulb's plastic base
facing upward, insert the glass end of the
bulb into the socket. You may need to turn
the bulb left or right to line up the grooves
in the plastic base with the tabs in the
socket. When the grooves are aligned, push
the bulb into the socket until the plastic base
contacts the rear of the socket.
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