Ford 2003 Mustang Workshop Manual page 3939

6. Remove the water diverter.
7. Mark the winter seal at the top, bottom and the forward edge of the rear tacking strip.
8. Remove the winter seal.
9. Lift the rear cover assembly over the convertible top exposing the top of the rear window glass
assembly.
10. Remove all of the staples in the cover assembly along the number four bow.