FORD 2010 Mustang v.1 - Manual (Page 157)

The tether anchors on the
convertible are located rearward of
the seatback in the convertible top
sling.
Note: For easier access, attach the
tether with the convertible top up.
Note: The attachments for the
convertible boot located on the back
of the head restraints are not tether
anchors.
2010 05+ Mustang (197)
Owners Guide, 1st Printing
USA (fus)
Seating and Safety Restraints
157