Toyota 2006 Tundra Owner's Manual page 156

Anchor brackets
Use one anchor bracket on the back of
rear seats and two anchor brackets on the
floor as shown above to attach the top
strap.
Anchor brackets are installed for each
rear seating position.
'06 TUNDRA_U (L/O 0508)
TO USE THE ANCHORAGES:
1. Remove the head restraint.
Outside position
Center position
2006 TUNDRA from Oct. '06 Prod. (OM34458U)
145