2006 Toyota Tundra Owners Manual - Page 145

'06 TUNDRA_U (L/O 0508) 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. TO USE THE ANCHORAGES: 1. Remove the head restraint. Outside position Center position 145 2006 TUNDRA from Oct. '06 Prod. (OM34458U)