Toyota 2009 Tundra Owner's Manual page 184

Right side passenger seat
Center passenger seat (bench type seat)
1-7. Safety information
Remove the anchor bracket
cover.
Installing position:
Right side passenger seat
Center passenger seat (Bench
type seat)
Store the removed cover in a safe
place such as the glove box.
Latch the hook onto the anchor
bracket and tighten the top tether
strap.
Make sure the top tether strap is
securely latched.
Latch the hook onto the anchor
bracket and tighten the top tether
strap.
Make sure the top tether strap is
securely latched.
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