Ford 1999 Windstar Owner's Manual page 113

Seating and safety restraints
Bench seat
To remove the seats:
1. (For 2nd row bench seat only.)
Disengage the lap/shoulder belt from
the side of the seat belt detach
anchors (if equipped) by inserting
the seatbelt tongue or a key into the
slot in the detachable anchor and
lifting upward.
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