Fiat 500 Abarth Owner's Manual page 75

2. Route the tether strap to provide the most direct path
for the strap between the anchor and the child seat. If
your vehicle is equipped with adjustable rear head
restraints, raise the head restraint, and where possible,
route the tether strap under the head restraint and
between the two posts. If not possible, lower the head
restraint and pass the tether strap around the outboard
side of the head restraint.
3. Attach the tether strap hook of the child restraint to
the top tether anchorage as shown in the diagram.
THINGS TO KNOW BEFORE STARTING YOUR VEHICLE 73
Rear Seat Tether Strap Mounting
4. Remove slack in the tether strap according to the child
restraint manufacturer's instructions.
2