FORD 2003 F-550 v.1 - Manual (Page 95)

The SuperCab rear seat has three straps behind the top of the seat back
that function as both routing loops for the tether straps and anchor
loops.
The tether strap anchors in your vehicle are in the following positions
(shown from top view):
Attach the tether strap onlyto the appropriate tether anchor as
shown. The tether strap maynot work properlyif attached
somewhere other than the correct tether anchor.
• F—Series Regular Cab
• F—Series SuperCab
• F—Series Crew Cab
Tether strap attachment
1. Position the child safetyseat on the seat cushion.
2. Route the child safetyseat tether strap over the back of the seat.
3. Locate the correct anchor for the selected seating position.
4. You mayneed to pull the seatback forward to access the tether
anchors. Make sure the seat is locked in the upright position before
Seating and Safety Restraints
95