Honda 1998 Odyssey Owner's Manual page 41

Protecting Children
Important Safety Information
Keep the third seat in the floor while
using a tether-style child seat in the
second seat. If you attempt to return
the third seat to the upright position,
you may damage the vehicle or
tether, even though the damage may
not be obvious. If this happens, the
child seat may not be properly
restrained in a crash.
Driver and Passenger Safety
Third Seat Installation:
There are two attachment points on
the tailgate sill. Select the attach-
ment point you want use, and
remove the plug with a small flat-
tipped screwdriver or a fingernail file.
Install the tether hardware that came
with the child seat.
Tighten the bolt to:
16 lbf.ft (22 N . m, 2.2 kgf.m)
If you are not sure how to install the
hardware, have it installed by your
authorized Honda dealer.
The anchor plate and mounting
hardware for a top tether are
supplied with the vehicle. When
installing, make sure the toothed
washer is on the bottom of the bolt.