GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 2009 🢒 DTS 🢒 Diagnostic Navigation 🢒 Vehicle Diagnostic Information 🢒 Headlights/Daytime Running Lights (DRL) Schematics
Figure 1:

Headlamps
Object Number: 2082225 Size: FS
Figure 2:

Headlamp Switch
Object Number: 2082227 Size: FS