FORD F-250 - Manual (Page 100)

An air bag can kill or injure a child in a child seat. Child seats
should never be placed in the front seats, unless passenger air
bag switch is turned off, See Passenger air bag deactivation switch.
Rear facing child seats should NEVER be placed in the front
seats unless the passenger airbag switch is turned off.
2. Pull down on the shoulder belt
and then grasp the shoulder belt
and lap belt together.
3. 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.
Seating and safety restraints
100