FORD 2002 Thunderbird v.1 - Manual (Page 125)

Installing child safety seats in combination lap and shoulder belt
seating positions
Air bags can kill or injure a child in a child seat. NEVER place a
rear-facing child seat in front of an active air bag. If you must
use a forward-facing child seat in the front seat, move the seat all the
way back and turn the passenger air bags OFF.
1. Position the child safety seat in a
seat with a combination lap and
shoulder belt.
2. Pull down on the shoulder belt
and then grasp the shoulder belt
and lap belt together.
Seating and safety restraints
125