Ford 2003 Mustang Workshop Manual page 3785

10. CAUTION: Open a window to prevent the windshield glass from being pushed out
by air pressure when a door is closed.
Using the alignment marks install the windshield glass.
11. After the glass is set, check for water leaks and add urethane adhesive where needed.
12. Install the cowl grille.
13. Install the cowl grille weatherstrip.
14. Install the two windshield wiper pivot arms.
Position the arms.
Install the windshield wiper pivot arms.
15. Install the headliner.
Coupe
16. Install the sun visors and clips.