WARNING: This page is about a different car, the 2006 Dodge Magnum, 2006 Dodge Charger, and 2006 Chrysler 300. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Removing/Installing Rear Wiper Arm
Courtesy of DAIMLERCHRYSLER CORP.
Install wiper arm (3).
Install retaining nut (1). Torque nut to 18 N.m (13 ft. lbs.).