GM Service Manual Online
For 1990-2009 cars only
Figure 1:

Light Switch and Tail Relay


Object Number: 494003  Size: FS
Figure 2:

Instrument Panel Lamp Dimmer Control and Lamps


Object Number: 494010  Size: FS
Lighting Systems Components
Interior Lights Dimming Circuit Description
Light Switch and Tail Relay
G200 (2 of 2)
G200 (1 of 2)