GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 2007 🢒 STS 🢒 Body Systems 🢒 Lighting 🢒 Inside Rearview Mirror Schematics
Figure 1:

Inside Rearview Mirror (ISRVM), Power and Ground
Object Number: 1822649 Size: FS
Master Electrical Component List
Automatic Day-Night Mirror Description and Operation
Control Module References
Automatic Headlamp Dimming Signals
Fuse Block Underhood Wiring Bussing
Backup Lamps, CHMSL - Domestic and Export
Fuse Block - Right Rear Bussing
Fuse Block - Right Rear Bussing
Fuse Block - Right Rear Bussing
G401 (2 of 2)
Onstar 1 of 2
G401 (2 of 2)
G402 (1 of 2)
G402 (2 of 2)
Figure 2:

Inside Rearview Mirror (ISRVM): Automatic Headlamp Dimming Signals
Object Number: 1822656 Size: FS
Master Electrical Component List
Automatic Day-Night Mirror Description and Operation
Control Module References
07 STS Inside Rearview Mirror - Power and Ground
Automatic Headlamp Dimming Relay w/ TT6, Headlamps w/ TT6
Object Detection Schematics
Microphone, VSS and GPS Antenna