Jeep 2013 Wrangler - Manual (Page 248)

13. Locate the black swing gate bar. Slide the swing gate
bar over the receiver at the bottom inside of the rear
window. The spongy part of the seal should be down
and pointed outward to seal with the swing gate
when closed.
14. Install the rear window by starting both zipper ends
at the lower left corner of the rear window opening.
Ensure that the zippers are properly started and
aligned before zipping to prevent damage.
246 UNDERSTANDING THE FEATURES OF YOUR VEHICLE