2005 Toyota Sienna Owners Manual - Page 142
2005 Toyota Sienna Manual
Page 142 highlights
05 SIENNA_U (L/O 0409) Use the anchor brackets on the back of the second seats to attach the top strap. Anchor bracket is installed for each second seating position. Anchor brackets 7−passenger models TO USE THE ANCHOR BRACKET: 1. Remove the head restraint. Anchor brackets 8−passenger models 142 2005 SIENNA from Sep. '04 Prod. (OM45431U)