Windshield And Trunk Glass - Backlight, Trunk Flip Seal - Remove And Replace: Install

Starting from one of the corners, remove a part of the backing tape from the new seal, and then push it in as far as possible.
Work your way around until you reach the other corner.
Cut off any overlap length of the seal to match the fixed roof glass seal.

Courtesy of TESLA, INC.
Close the trunk.