July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!
Body Control Module Schematics
WARNING: This page is about a different car, the 2002 Pontiac Grand Prix. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Body Control Module Schematic (Power, Ground, & References)
Courtesy of GENERAL MOTORS CORP.
Fig 2: Body Control Module Schematic (Lighting, Door Locks, & Horn References)