GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2009 🢒 Regal 🢒 Power and Signal Distribution 🢒 Data Communications 🢒 Headlights/Daytime Running Lights (DRL) Schematics
Figure 1:

Low Beam and Daytime Running Lamps (TT4)
Object Number: 2179802 Size: FS
Figure 2:

High Beam (TT4)
Object Number: 2179804 Size: FS
Figure 3:

Low Beam and High Beam (TT6)
Object Number: 2179806 Size: FS
Figure 4:

Headlight Leveling (TT6)
Object Number: 2179814 Size: FS
Figure 5:

Height Sensors (TT6)
Object Number: 2179816 Size: FS