July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!
Remote CD Changer C1 (W/UW5)
WARNING: This page is about a different car, the 2003 Pontiac Vibe. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Identifying Remote CD Changer C1 (W/UW5) Connector And Pin Function Specifications