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

Powers, Grounds, and Park Lamp Relay


Object Number: 784068  Size: FS
Master Electrical Component List
Exterior Lighting Systems Description and Operation
Turn Signal and Hazard Switch
Interior Accessories
AUX PWR/CIGAR, PRK LPS, and PCM BATT Fuses
Turn Signal and Hazard Switch
SP101
Turn Signal and Hazard Switch
Figure 2:

Turn Signal and Hazard Switch


Object Number: 784071  Size: FS
Master Electrical Component List
Exterior Lighting Systems Description and Operation
Interior Accessories
Powers, Grounds, and Park Lamp Relay
LH BFC BATT 2, STOP LPS, HAZARD LPS, IPC/HVAC BATT, BFC BATT Fuses
IGN BATT 1, IGN SW BATT 2, Ignition Switch
Panel Dimming
SP201
Powers, Grounds, and Park Lamp Relay
Powers, Grounds, and Park Lamp Relay
SP202
SP401
SP402
SP202
Tail and Stoplights
Tail and Stoplights
Figure 3:

Interior Accessories


Object Number: 784072  Size: FS
Master Electrical Component List
Exterior Lighting Systems Description and Operation
Tail and Stoplights
Turn Signal and Hazard Switch
Powers, Grounds, and Park Lamp Relay
Tail and Stoplights
Tail and Stoplights
SP401
Figure 4:

Tail and Stoplights


Object Number: 784074  Size: FS
Master Electrical Component List
Exterior Lighting Systems Description and Operation
Backup Lights
Interior Accessories
LH BFC BATT 2, STOP LPS, HAZARD LPS, IPC/HVAC BATT, BFC BATT Fuses
Brake Switch and Inhibit Signals
EBCM, PWR, GND, and BPMV
Interior Accessories
Turn Signal and Hazard Switch
Turn Signal and Hazard Switch
Interior Accessories
SP402
SP401
SP402
Figure 5:

Backup Lights


Object Number: 784075  Size: FS
Master Electrical Component List
Exterior Lighting Systems Description and Operation
Tail and Stoplights
LH BFC BATT 2, STOP LPS, HAZARD LPS, IPC/HVAC BATT, BFC BATT Fuses
SP401
SP402