Ford Mercury Villager 1997 Owner's Manual page 143

Seating and Safety Restraints
Auxiliary Safety Restraint System for the Second Row
Bench Seat (7 passenger vehicle)
There is a unique safety restraint system for the outside seating
position of the second row bench seat. It is very important that you
read and understand this section before anyone rides in the
outside seating position (near the sliding door) of the
two-passenger bench seat.
The two-passenger bench seat in the second row has a safety
restraint system made up of two buckles and two tongues. There
is an anchor location at the bottom of the C-pillar and another
anchor location at the top of the C-pillar that attach each end of the
seat belt webbing to the bodyside.
One of the seat belt tongues has two "windows" (or holes) and
the other has only one "window." The seat belt tongue with one
window attaches to the buckle mounted to the side of the seat.
The seat belt tongue with two windows should be pulled across the
passenger's chest and fastened to the buckle mounted in the
middle of the seat.
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