Ford 1996 Windstar Manual page 354

To install a bulb:
With the flat side of the bulb's plastic base facing upward,
1.
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. Do not touch the
glass with your fingers.
Snap the retaining clip over the plastic base.
2.
Push the electrical connector into the rear of the plastic base
3.
until it snaps, locking it into place.
Turn the headlamps on and make sure that they work
4.
properly. If the headlamp was correctly aligned before you
changed bulbs, you should not need to align it again.
Replacing the Taillamp Bulbs
To remove a bulb:
Open the liftgate.
1.
Remove two screws along top edge of taillamp lens.
2.
Grasp lens with fingers at point B and pull side of lens out
3.
until snap attachment releases.
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