Ford 2005 F250 Owner's Manual page 126

Seating and Safety Restraints
4. You may need to pull the seatback forward to access the tether anchors.
Make sure the seat is locked in the upright position before installing the
child seat. Refer to the Rear folding seat system with load floor section
in this chapter for information on how to operate the rear seats.
5. Clip the tether strap to the anchor as shown.
• Front seats (Regular Cab)
• Front seat (SuperCab)
• Rear seats (Crew Cab)
If the tether strap is clipped incorrectly, the child safety seat
may not be retained properly in the event of a collision.
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