WARNING: This page is about a different car, the 2005 Saturn Ion Red Line, 2005 Saturn Ion 3, 2005 Saturn Ion 2, and 2005 Saturn Ion 1. However, it is still accessible from the selected car via links, so may be relevant.
Install the bulb in the dome lamp.
Fig 1: View Of Dome Lamp Bulb
Courtesy of GENERAL MOTORS CORP.
Position the dome lamp lens on the dome lamp assembly.