Jeep 2004 Wrangler - Manual (Page 94)

9. Tuck the sail panel retainer into the bodyside retainer.
Begin working from the rear tailgate opening and work
to the corner. NOTE: This may be difficult to do the first time. If
difficulty is experienced with fabric tension, place your
hand on top of the 3 bow and push down to help tuck in
the sail panels.
94 UNDERSTANDING THE FEATURES OF YOUR VEHICLE