Ford 1999 Windstar Owner's Manual page 116

Seating and safety restraints
• Indexed to far left
• Indexed to far right
The 3rd row bench seat can be
placed in the 2nd row position.
3. Align seat front hooks to front tub pins, lower back of seat into the
rear tubs until both release controls latch into place. Be sure that the
seat is locked in place both front and back.
4. Make sure the safety belt is not twisted, then insert the seat belt
tongue into detachable anchor (if equipped) until you hear a "click" and
feel the latch engage.
Always latch the vehicle seat to the floor, whether the seat is
occupied or empty. If not latched, the seat may cause injury
during a sudden stop.
116