Ford 2002 F650 Owner's Manual page 105

Seating and Safety Restraints
Installing child safety seats in combination lap and shoulder belt
seating positions
1. Position the child safety seat in a
seat with a combination lap and
shoulder belt.
Children are safer restrained in the rear seat when possible.
2. While holding the shoulder and
lap belt portions together, route the
tongue through the child seat
according to the child seat
manufacturer's instructions. Be sure
the belt webbing is not twisted.
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