FORD 2003 Explorer Sport Trac v.3 - Manual (Page 104)

If the safety seat is not anchored properly, the risk of a child
being injured in a collision greatly increases.
Attaching safety seats with LATCH (Lower Anchors and Tethers for
Children) attachments for child seat anchors
Some child safety seats have two rigid or webbing mounted attachments
that connect to two anchors at certain seating positions in your vehicle.
This type of child seat eliminates the need to use seat belts to attach the
child seat. For forward-facing child seats, the tether strap must also be
attached to the proper tether anchor. See Attaching safety seats with
tether straps in this chapter.
Your vehicle has LATCH anchors for child seat installation at the
following locations:
The LATCH anchors on both sides
of the center of the rear seat are
provided only for child seats at the
outboard seats. These anchors are
further apart than the pairs of lower
anchors for child seat installation at
other seats. DO NOT install a child
seat with LATCH attachments (rigid
or mounted on belt webbing) to the
lower anchors on both sides of the center rear seat. If you install a child
seat at the center rear position, use the vehicle belt and the top tether
anchor.
Never attach two LATCH child safety seats to the same anchor.
In a crash, one anchor may not be strong enough to hold two
child safety seat attachments and may break, causing serious injury or
death.
Seating and Safety Restraints
104