Chrysler 2004 PT Cruiser Manual page 57

In general, you will first loosen the adjusters on the lower
and tether straps so that you can more easily attach the
hook or connector to the lower and tether anchorages.
The tether strap should be routed under the center of the
head restraint and attached to the tether anchor on the
rear of the seat back. Then tighten all three straps as you
push the child restraint rearward and downward into the
seat.
THINGS TO KNOW BEFORE STARTING YOUR VEHICLE 57
Not all child restraint systems will be installed as we
have described here. Again, carefully follow the instruc-
tions that come with the child restraint system.
NOTE: If your child restraint seat is not LATCH com-
patible, install the restraint using the vehicle seat belts.
2