Ford 1998 Windstar Owner's Manual page 193

Seating and Safety Restraints
Setting the retractor to automatic locking mode
Allow the belt to retract. A clicking sound will be heard as
6.
the belt retracts. This indicates the retractor is in the
automatic locking mode. Pull on the lap belt portion across
the child seat towards the buckle and continue to pull up on
the shoulder belt portion while pushing down on the child
seat allowing the shoulder belt to retract, to remove any
slack in seat belt. See Figures 5 and 6.
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