Ford F-150 2000 Introduction Manual page 108

Seating and safety restraints
Use only extensions manufactured by the same supplier as the safety
belt. Manufacturer identification is located at the end of the webbing on
the label. Also, use the safety belt extension only if the safety belt is too
short for you when fully extended. Do not use extensions to change the
fit of the shoulder belt across the torso.
Safety belt warning light and indicator chime
The seat belt warning light illuminates in the instrument cluster and a
chime sounds to remind the occupants to fasten their safety belts.
Conditions of operation
If...
The driver's safety belt is not
buckled before the ignition
switch is turned to the ON
position...
The driver's safety belt is
buckled while the indicator
light is illuminated and the
warning chime is sounding...
The driver's safety belt is
buckled before the ignition
switch is turned to the ON
position...
Belt minder (if equipped)
The Belt Minder feature is a supplemental warning to the safety belt
warning function. This feature provides additional reminders to the
driver that the driver's safety belt is unbuckled by intermittently
sounding a chime and illuminating the safety belt warning lamp in the
instrument cluster.
108
Then...
The safety belt warning light
illuminates1-2 minutes and the
warning chime sounds 4-8 seconds.
The safety belt warning light and
warning chime turn off.
The safety belt warning light and
indicator chime remain off.