Ford 1996 Aerostar Manual page 22

When reinstalling a rear seat in your
vehicle it must be placed in its original
position. Improper installation of the seat
will prevent correct use of the safety belts
and could increase the risk of injury.
Refer to the warning label on the seat
belt.
After installing the rear seat, make sure the
safety belt is not twisted before you insert it into
the detachable anchor. A twisted safety belt may
cause the retractor to not work properly. Then
insert the detachable anchor tongue into the
detachable anchor until you hear a "snap" and
feel the latch engage.
Adjustable Lap Belts Without Retractors
On the center seat of the rear three-passenger
seats you will find a lap-belt without a retractor.
You must adjust the lap belt to fit snugly and as
low as possible around your hips. Do not wear
the lap belt around your waist.
Fastening and unfastening occupant safety lap belts
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