GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2003 🢒 Regal 🢒 Body and Accessories 🢒 Wiring Systems 🢒 Power and Grounding Component Views
Figure 1:

Underhood Accessory Wiring Junction Block
Object Number: 399300 Size: LF
(1)Underhood Accessory Wiring Junction, C6
(2)Underhood Accessory Wiring Junction Block, C3 (Forward Lamp)
(3)Underhood Accessory Wiring Junction Block, C2 (Instrument Panel)
(4)Underhood Accessory Wiring Junction Block, C1 (Engine)
(5)Underhood Accessory Wiring Junction Block, C7
(6)Underhood Accessory Wiring Junction Block, C5
(7)Underhood Accessory Wiring Junction Block, C4
Figure 2:

LR of the Engine Compartment
Object Number: 1095521 Size: LF
(1)P103
(2)I/P Wiring Harness
(3)Cruise Control Module (CCM) Connector
(4)Cruise Control Module (CCM) (K34)
(5)Electronic Brake Control Module (EBCM) (JL9/JM4)
(6)Electronic Brake Control Module (EBCM) Connector (JL9/JM4)
(7)Engine Wiring Harness
(8)Brake Fluid Level Switch
(9)C101
(10)A/C Refrigerant Pressure Sensor
(11)Engine Wiring Harness
(12)G171 (JL9/JM4)
Figure 3:

Behind Right Side of Instrument Panel
Object Number: 910278 Size: MF
(1)C206, Power Drop Connector
Figure 4:

Behind the Right Side of the I/P
Object Number: 1162362 Size: LF
(1)Vacuum Reservoir
(2)G200
(3)Fuse Block - I/P
(4)C200
(5)Blower Motor
(6)Blower Motor Resistor Assembly (CJ3)/Blower Motor Control Processor (CJ2)
(7)P100
(8)Vacuum Reservoir
(9)Black Vacuum Hose
(10)Air Temperature Actuator - Right
(11)Automatic Headlamp Relay
(12)Rear Compartment Lid Release Relay
(13)Rear Window Defogger Relay
(14)Retained Accessory Power (RAP) Relay
(15)I/P Wiring Harness
(16)Air Temperature Actuator - Left
Figure 5:

Right Side of Instrument Panel - Front
Object Number: 581309 Size: LF
(1)Fuse Block - I/P
(2)G200
(3)C200
Figure 6:

Cigar Lighter Jumper Harness View
Object Number: 329256 Size: LF
(1)C242
Figure 7:

Center Console (D06, D55 - If Equipped)
Object Number: 822775 Size: LF
(1)Heated Seat Switch - Driver (KA1)
(2)Traction Control Switch (Regal)
(3)Heated Seat Switch - Passenger (KA1)
(4)Cigar Lighter
(5)Auxiliary Power Outlet (If Equipped)
(6)C240 (Regal), C241 (Century - If Equipped)
(7)I/P Wiring Harness