GM Service Manual Online
For 1990-2009 cars only
Table 1: Accessory Power Receptacle
Table 2: Cigar Lighter (w/RPO D55)
Table 3: Cigar Lighter (w/0 RPO D55)
Table 4: Ignition Switch
Table 5: Underhood Accessory Wiring Junction Block C1 (w/RPO L36/L67)
Table 6: Underhood Accessory Wiring Junction Block C1 (w/RPO LG8)
Table 7: Underhood Accessory Wiring Junction Block C2
Table 8: Underhood Accessory Wiring Junction Block C3
Table 9: Underhood Accessory Wiring Junction Block C4
Table 10: Underhood Accessory Wiring Junction Block C5
Table 11: Underhood Accessory Wiring Junction Block C6
Table 12: Underhood Accessory Wiring Junction Block C7

Accessory Power Receptacle


Object Number: 320518  Size: CH

Connector Part Information

    • 12126446
    • 3-Way F Metric-Pack Flex Lock (BLK)

Pin

Wire Color

Circuit No.

Function

A

ORN

2540

Fused Output - Battery

B

--

--

Not Used

C

BLK

1450

Ground

Cigar Lighter (w/RPO D55)


Object Number: 38228  Size: CH

Connector Part Information

    • 12047699
    • 2-Way M SLV and LC/LTR, Pull to Seat, (GRY)

Pin

Wire Color

Circuit No.

Function

A

ORN

40

Fuse Output - Battery

B

BLK

150

Ground

Cigar Lighter (w/0 RPO D55)


Object Number: 365964  Size: CH

Connector Part Information

    • 12176445
    • 3-Way F Metric-Pack 280 Series Flex Lock (NAT)

Pin

Wire Color

Circuit No.

Function

A

ORN

2540

Fused Output - Battery

B

--

--

Not Used

C

BLK

1450

Ground

Ignition Switch


Object Number: 523617  Size: CH

Connector Part Information

    • 12084183
    • 18-Way F Metric-Pack Mixed Series (BLK)

Pin

Wire Color

Circuit No.

Function

B1-B2

--

--

Not Used

B3

LT GRN

80

Key Alarm Feed

B4

TAN

1550

Key Alarm Feed

B5-B6

--

--

Not Used

C1

WHT

1390

Ignition Switch Output - OFF/RUN/CRANK

C2

BLK/WHT

150

Ground

C3-C4

--

--

Not Used

C5

PNK

3

Ignition Switch Output - IGN 1

C6

ORN

300

Ignition Switch Output - IGN 3

D1

YEL

5

Ignition Switch Output - CRANK

D2

RED

142

Fused Output - Battery

D3

WHT/BLK

987

Electric Park Lock Feed

D4

BLK

150

Ground

D5

RED/WHT

42

Fused Output - Battery

D6

BRN

4

Ignition Switch Output - Accessory

Underhood Accessory Wiring Junction Block C1 (w/RPO L36/L67)


Object Number: 280784  Size: CH

Connector Part Information

    • 15303513
    • 68-Way F Metri-Pack 280 Series Flex Lock (BLK)

Pin

Wire Color

Circuit No.

Function

A1

BLK/WHT

451

PCM and Sensor Ground

A2

LT BLU

409

Engine Coolant Fan 1 Feed

A3

DK GRN

335

Coolant Fan Relay Output - Coil

A4

--

--

Not Used

A5

PNK

339

Fuse Output - Ignition 1

A6-A7

--

--

Not Used

A8

ORN

2740

Fused Battery Feed

A9

PNK

1339

Fused Ignition 1 Feed

A10

GRY

532

Engine Coolant Fan 1 Return

A11

DK BLU

473

Coolant Fan 2 Relay Control

A12

ORN/BLK

434

Park/Neutral Safety Switch Input

B1

BLK/WHT

451

PCM and Sensor Ground

B2

PNK

439

Fused Ignition 1 Feed

B3-B5

--

--

Not Used

B6

ORN

2140

Fused Output - Battery

B7

PNK

239

Fuse Output - Ignition 1

B8

--

--

Not Used

B9

--

--

Not Used (w/RPO L36)

B9

BRN

436

Air Injection Reaction Pump Motor Relay Output - Coil (w/RPO L67)

B10-B11

--

--

Not Used

B12

YEL/BLK

625

Vehicle Anti-Theft Starter Enable Relay Output - Coil

C1

BLK/WHT

451

PCM Ground

C2-C3

--

--

Not Used

C4

PNK

339

Fuse Output - Ignition 1

C5

PNK

839

Fused Ignition 1 Feed

C8

--

--

Not Used

C9

PNK

639

Fused Ignition 1 Feed

C10

--

--

Not Used

C11

BLK

1050

Ground

C12

--

--

Not Used

D1-D2

--

--

Not Used

D3

PNK

339

Fuse Output - Ignition 1 (w/RPO L36)

D3

--

--

Not Used (w/RPO L67)

D4

--

--

Not Used (w/RPO L36)

D4

PNK

339

Fuse Output - Ignition 1 (w/RPO L67)

D5

PNK

839

Fused Ignition 1 Feed

D8

ORN

540

Fused Battery Feed

D9

PPL

806

Fused Ignition 0 Feed

D10

WHT

1310

Canister Vent Valve Solenoid Output (VIN M, K Only)

D11-D12

--

--

Not Used

E1-E2

--

--

Not Used

E3

DK GRN/WHT

465

Fuel Pump Relay Feed - Coil

E4-E7

--

--

Not Used

E8

PPL

1500

Fused Ignition 0 Feed

E9

PNK

1039

Fused Ignition 1 Feed

E10

ORN

2140

Cool Fan 3 Relay

E11-E12

--

--

Not Used

F1-F2

--

--

Not Used

F3

LT GRN

497

Fuel Pump Relay Output - Coil - Secondary (w/RPO L36)

F4

GRY

120

Fuel Pump Motor Resistor Feed (w/RPO L36)

F5

LT GRN

1058

Fuel Pump Resistor Feed (w/RPO L36)

F6

--

--

Not Used (w/RPO L36)

F3-F6

--

--

Not Used (w/RPO L67)

F7

DK GRN

59

A/C Compressor Clutch Solenoid Feed

F8

DK GRN/WHT

459

A/C Compressor Relay Output - Coil

F9

--

--

Not Used

F10

YEL

1737

Neutral Safety Switch

F11

--

--

Not Used

F12

WHT

504

Coolant Fan Motor Output

Underhood Accessory Wiring Junction Block C1 (w/RPO LG8)


Object Number: 280784  Size: CH

Connector Part Information

    • 15303513
    • 68-Way F Metri-Pack 280 Series Flex Lock (BLK)

Pin

Wire Color

Circuit No.

Function

A1

--

--

Not Used

A2

LT BLU

409

Engine Coolant Fan 1 Feed

A3

DK GRN

335

Coolant Fan Relay Output - Coil

A4-A7

--

--

Not Used

A8

ORN

2740

Fused Battery Feed

A9

PNK

1339

Fused Ignition 1 Feed

A10

GRY

532

Engine Coolant Fan 1 Return

A11

DK BLU

473

Coolant Fan 2 Relay Control

A12

ORN/BLK

434

Park/Neutral Input

B1

BLK

451

PCM and Sensor Ground

B2

PNK

439

Fused Ignition 1 Feed

B3-B5

--

--

Not Used

B6

ORN

2140

Fused Output - Battery

B7

PNK

239

Fuse Output - Ignition 1

B8

--

--

Not Used

B9

BRN

436

Air Pump Motor Relay Output - Coil

B10-B11

--

--

Not Used

B12

YEL/BLK

625

Vehicle Anti-Theft System Starter Enable Relay Output - Coil

C1

BLK/WHT

451

PCM Ground

C2-C3

--

--

Not Used

C4

PNK

339

Fuse Output - Ignition 1

C5

PNK

839

Fused Ignition 1 Feed

C8

--

--

Not Used

C9

PNK

639

Fused Ignition 1 Feed

C10

--

--

Not Used

C11

BLK

1050

Ground

C12

--

--

Not Used

D1-D2

--

--

Not Used

D3

PNK

339

Fuse Output - Ignition 1

D4

--

--

Not Used

D5

PNK

839

Fused Ignition 1 Feed

D6-D7

--

--

Not Used

D8

ORN

540

Fused Battery Feed

D9

PPL

806

Fused Ignition 0 Feed

D10

WHT

1310

Canister Vent Valve Solenoid Output (VIN M, K Only)

D11-D12

--

--

Not Used

E1-E2

--

--

Not Used

E3

DK GRN/WHT

465

Fuel Pump Relay Feed - Coil

E4-E7

--

--

Not Used

E8

PPL

1500

Fused Ignition 0 Feed

E9

PNK

1039

Fused Ignition 1 Feed

E10

ORN

2140

Fused Output - Battery

E11-E12

--

--

Not Used

F1

ORN

840

Fuse Output - Battery

F2-F5

--

--

Not Used

F6

LT GRN

24

Backup Lamp Feed

F7

DK GRN

59

A/C Compressor Clutch Solenoid Feed

F8

DK GRN/WHT

459

A/C Compressor Relay Output - Coil

F9

--

--

Not Used

F10

YEL

1737

Neutral Safety Switch

F11

--

--

Not Used

F12

WHT

504

Engine Coolant Fan Motor Output

Underhood Accessory Wiring Junction Block C2


Object Number: 280786  Size: CH

Connector Part Information

    • 15303514
    • 68-Way F Metri-Pack 280 Series Flex Lock (BRN)

Pin

Wire Color

Circuit No.

Function

A1

ORN

840

Fuse Output - Battery (2-Door)

A2-A3

--

--

Not Used

A4

PNK

1339

Fused Output Ignition 1

A5

--

--

Not Used

A6

--

--

Not Used

A7

PPL

1500

Fused Ignition 0 Feed

A8-A10

--

--

Not Used

A11

WHT

1310

Canister Vent Valve Solenoid Output

A12

--

--

Not Used

B1

ORN

840

Fuse Output - Battery

B2-B12

--

--

Not Used

C1

--

--

Not Used

C2

PNK

439

Fused Ignition 1 Feed

C3-C10

--

--

Not Used

C11

ORN/BLK

434

Park/Neutral Input

C12

--

--

Not Used

D1

--

--

Not Used

D2

PNK

439

Fused Ignition 1 Feed

D3-D8

--

--

Not Used

D9

PPL

806

Corning Lamp Feed - Right (2-Door)

D10-D11

--

--

Not Used

D12

ORN

57

Corning Lamp Feed - Left (2-Door)

E1

ORN

1340

Fused BATT Feed

E2

PNK

339

Fuse Output - Ignition 1

E3-E5

--

--

Not Used

E6

PNK

1200

Headlamp Output - High Beam

E7-E8

--

--

Not Used

E9

BLK

58

Fused Ignition 1 Feed (2-Door)

E10

--

--

Not Used

E11

YEL/BLK

68

Low Coolant Level Indicator Lamp Output

E12

--

--

Not Used

F1

ORN

1340

Fused Battery Feed

F2

PNK

339

Fused Ignition 1 Feed

F3-F4

--

--

Not Used

F5

DK GRN/WHT

1317

Fog Lamp Relay Output - Coil (2-Door)

F6

PPL

34

Fog Lamp Feed (2-Door)

F7

BLK

28

Horn Relay Output - Coil

F8

BRN

9

Park Lamp Feed

F9

--

--

Not Used

F10

DK BLU

1201

Headlamp Output - Low Beam

F11

LT BLU

14

Turn Signal Lamp Feed - Left Front

F12

DK BLU

15

Turn Signal Lamp Feed - Right Front

Underhood Accessory Wiring Junction Block C3


Object Number: 280787  Size: CH

Connector Part Information

    • 15303512
    • 68-Way F Metri-Pack 280 Series Flex Lock (GRY)

Pin

Wire Color

Circuit No.

Function

A1-A4

--

--

Not Used

A5

BRN

9

Parking Lamp Feed

A6

PPL/WHT

34

Fog Lamp Feed

A7

PNK/BLK

1200

Headlamp Output - High Beam

A8-A9

--

--

Not Used

A10

DK BLU/WHT

1201

Headlamp Output - Low Beam

A11

LT BLU

14

Turn Signal Lamp Feed - Left Front

A12

DK BLU

15

Turn Signal Lamp Feed - Left Front

B1-B4

--

--

Not Used

B5

BRN

9

Parking Lamp Feed

B6

PPL

34

Fog Lamp Feed

B7

PNK

1200

Left High Beam Output

B8-B12

--

--

Not Used

C1-C4

--

--

Not Used

C5

BRN/WHT

9

Parking Lamp Feed

C8

DK GRN

29

Horn Feed

C9-C12

--

--

Not Used

D1-D4

--

--

Not Used

D5

BRN

9

Parking Lamp Feed

D6-D10

--

--

Not Used

D11

DK BLU

1201

Headlamp Output - Low Beam

D12

ORN

57

Corning Lamp Feed - Left (Regal Only)

E1

ORN

1640

Fused Battery Feed

E2

ORN/BLK

1740

Fused Battery Feed

E3-E10

--

--

Not Used

E11

BLK

58

Corning Lamp Feed - Right

E12

--

--

Not Used

F1

ORN/BLK

1640

Fused Battery Feed

F2

ORN

1740

Fused Battery Feed

F3-F12

--

--

Not Used

Underhood Accessory Wiring Junction Block C4


Object Number: 280788  Size: CH

Connector Part Information

    • 12146038
    • 2-Way F 800 MaxiFuse (GRY)

Pin

Wire Color

Circuit No.

Function

A

RED

242

Fused Battery Feed

B

RED

142

Fused Battery Feed (w/RAP)

Underhood Accessory Wiring Junction Block C5


Object Number: 258677  Size: CH

Connector Part Information

    • 12146037
    • 2-Way F 800 MaxiFuse (BLK)

Pin

Wire Color

Circuit No.

Function

A

--

--

Not Used

B

RED

42

Fused Battery Feed

Underhood Accessory Wiring Junction Block C6


Object Number: 280790  Size: CH

Connector Part Information

    • 12160605
    • 2-Way F 800 MaxiFuse (GRN)

Pin

Wire Color

Circuit No.

Function

A

RED

742

Fused Battery Feed

B

RED

642

Fused Battery Feed

Underhood Accessory Wiring Junction Block C7


Object Number: 365958  Size: CH

Connector Part Information

    • 12160606
    • 2-Way F 800 MaxiFuse (BRN)

Pin

Wire Color

Circuit No.

Function

A

--

--

Not Used

B

RED

1442

Fused Battery Feed