GM Service Manual Online
For 1990-2009 cars
Makes 🢒 Chevrolet 🢒 2004 🢒 C-Series Medium Duty Truck C6/7/8 - Mexico 🢒 Body 🢒 Lighting Systems 🢒 Lighting Systems Connector End Views
Table 1: Ashtray Lamp
Table 2: Backup Lamp Switch
Table 3: Clearance Lamps
Table 4: Daytime Running Lamps (DRL) Control Module
Table 5: Daytime Running Lamps (DRL) Diode
Table 6: Door Jamb Switch -- Driver
Table 7: Hazard Indicator Lamp
Table 8: Hazard Switch
Table 9: Headlamp Dimmer Switch
Table 10: Headlamp Switch
Table 11: Headlamps
Table 12: Heater Control Lamps
Table 13: IP Dimmer Switch
Table 14: Marker Lamps -- Roof
Table 15: Park/Turn Signal Lamps
Table 16: Park Brake Switch (JE5)
Table 17: Stop Lamp Relay 1
Table 18: Stop Lamp Relay 2
Table 19: Stop Lamp Switch C1
Table 20: Stop Lamp Switch C2
Table 21: Tail Lamps
Table 22: Tractor/Trailer Receptacle
Table 23: Trailer Marker Lamp Switch
Table 24: Trailer Stop Lamp Relay
Table 25: Trailer Stop Lamp Switch
Table 26: Turn Signal/Hazard Flasher Module
Table 27: Turn Signal Switch/Multifunction Switch C1

Ashtray Lamp


Object Number: 38556 Size: CH

Connector Part Information
    • 12124722
    • 2-Way Type W2 Axial (GRY)

Pin

Wire Color

Circuit No.

Function

A

BLK

250

Ground

B

GRY

8

Instrument Panel Lamp Supply Voltage

Backup Lamp Switch


Object Number: 635009 Size: CH

Connector Part Information
    • 12052641
    • 2-Way F Metri-Pack 150 Series, Sealed (BLK)

Pin

Wire Color

Circuit No.

Function

A

BRN

441

Ignition 3 Voltage

B

LT GRN

24

Backup Lamp Supply Voltage

Clearance Lamps


Object Number: 410092 Size: CH

Connector Part Information
    • 06294702
    • Bulb Base Type W-2, (NAT)

Pin

Wire Color

Circuit No.

Function

A

BRN

9

Lamp Supply Voltage

B

BLK

150

Ground

Daytime Running Lamps (DRL) Control Module


Object Number: 283863 Size: CH

Connector Part Information
    • 12191131
    • 8-Way F Printed Circuit Connector Edgeboard Series (GRY)

Pin

Wire Color

Circuit No.

Function

A

LT BLU

1134

Park Brake Switch Signal

B

--

--

Not Used

C

PNK

39

Ignition 1 Voltage

D

YEL

10

Headlamp Switch Signal

E-F

--

--

Not Used

G

LT GRN/

BLK

592

DRL Relay Control

H

BLK

250

Ground

Daytime Running Lamps (DRL) Diode


Object Number: 35456 Size: CH

Connector Part Information
    • 12064749
    • 2-Way F Metri-Pack 480 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

YEL

634

DRL Diode Supply Voltage

B

WHT

815

DRL Diode Signal

Door Jamb Switch -- Driver


Object Number: 333035 Size: CH

Connector Part Information
    • 12047781
    • 3-Way F Metri-Pack 150 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

WHT

156

Courtesy Lamp Low Control

B

BLK

150

Ground

C

--

--

Not Used

Hazard Indicator Lamp


Object Number: 35441 Size: CH

Connector Part Information
    • 12047663
    • 2-Way M Metri-Pack 150 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

GRY

8

Instrument Panel Lamp Supply Voltage

B

BLK

150

Ground

Hazard Switch


Object Number: 288397 Size: CH

Connector Part Information
    • 12034482
    • 6-Way F Metri-Pack 280 Series (GRY)

Pin

Wire Color

Circuit No.

Function

A

BRN

27

Hazard Flasher Signal

B

YEL

18

Left Rear Stop/Turn Lamp Supply Voltage

C

DK BLU

15

Right Turn Signal Lamps Supply Voltage

D

DK GRN

19

Right Rear Stop/Turn Lamp Supply Voltage

E

LT BLU

14

Left Turn Signal Lamps Supply Voltage

F

BLK

150

Ground

Headlamp Dimmer Switch


Object Number: 332023 Size: CH

Connector Part Information
    • 08917693
    • 4-Way F 56 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

LT GRN

11

Headlamp High Beam Supply Voltage

B

--

--

Not Used

C

PPL

544

DRL Relay Contact-Normally Closed

D

YEL

10

Headlamp Switch Signal

Headlamp Switch


Object Number: 39734 Size: CH

Connector Part Information
    • 12034061
    • 6-Way F Metri-Pack 480 Series (NAT)

Pin

Wire Color

Circuit No.

Function

A

LT BLU

13

Headlamp Switch Park Lamps Signal

B

YEL

634

DRL Diode Supply Voltage

C

RED

1042

Battery Positive Voltage

D

YEL

10

Headlamp Switch Signal

E

ORN

1040

Battery Positive Voltage

F

--

--

Not Used

Headlamps


Object Number: 306269 Size: CH

Connector Part Information
    • 12034372
    • 3-Way F Metri-Pack 800 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

BLK

150

Ground

B

LT GRN

11

Headlamp High Beam Supply Voltage

C

TAN

12

Headlamp Low Beam Supply Voltage

Heater Control Lamps


Object Number: 309447 Size: CH

Connector Part Information
    • 12110566
    • Bulb Base Type W-1 (BLK)

Pin

Wire Color

Circuit No.

Function

A

GRY

8

Instrument Panel Lamp Supply Voltage

B

BLK

250

Ground

IP Dimmer Switch


Object Number: 38618 Size: CH

Connector Part Information
    • 12034060
    • 4-Way F Metri-Pack 480 Series (NAT)

Pin

Wire Color

Circuit No.

Function

A

LT BLU

13

Headlamp Switch Park Lamps Signal

B

BLK

150

Ground

C

WHT

156

Courtesy Lamp Low Control

D

GRY

8

Instrument Panel Lamp Supply Voltage

Marker Lamps -- Roof


Object Number: 410092 Size: CH

Connector Part Information
    • 06294702
    • Bulb Base Type W-2 (NAT)

Pin

Wire Color

Circuit No.

Function

A

BRN

9

Lamp Supply Voltage

B

BLK

150

Ground

Park/Turn Signal Lamps


Object Number: 73223 Size: CH

Connector Part Information
    • 12162185
    • 3-Way F Metri-Pack 150 Series, Sealed (BLK)

Pin

Wire Color

Circuit No.

Function

A

LT BLU

14

Turn Signal Lamps Supply Voltage - Left Front

A

DK BLU

15

Turn Signal Lamps Supply Voltage - Right Front

B

BLK

150

Ground

C

BRN

9

Park Lamps Supply Voltage

Park Brake Switch (JE5)


Object Number: 258230 Size: CH

Connector Part Information
    • 12065298
    • 4-Way F Metri-Pack 150 Series, Sealed (BLK)

Pin

Wire Color

Circuit No.

Function

A

LT BLU

1134

Park Brake Switch Signal

B

BLK

150

Ground

C-D

--

--

Not Used

Stop Lamp Relay 1


Object Number: 281201 Size: CH

Connector Part Information
    • 12110541
    • 6-Way F, Metri-Pack 280 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A1

BLK

250

Ground

A2

LT BLU

20

Stop Lamp Supply Voltage

B1-B2

--

--

Not Used

C1

ORN

1240

Battery Positive Voltage

C2

WHT

17

Stop Lamp Switch Signal

Stop Lamp Relay 2


Object Number: 309518 Size: CH

Connector Part Information
    • 12129715
    • 6-Way F Metri-Pack 280 Series (GRY)

Pin

Wire Color

Circuit No.

Function

A1

BLK

250

Ground

A2

LT BLU

20

Stop Lamp Supply Voltage

B1-B2

--

--

Not Used

C1

ORN

1240

Battery Positive Voltage

C2

WHT

17

Stop Lamp Switch Signal

Stop Lamp Switch C1


Object Number: 130679 Size: CH

Connector Part Information
    • 12033704
    • 4-Way F Metri-Pack 280 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

ORN

1240

Battery Positive Voltage

B

WHT

17

Stop Lamp Switch Signal

C

ORN

540

Battery Positive Voltage

D

GRY

847

Extended Travel Brake Switch Signal

Stop Lamp Switch C2


Object Number: 333038 Size: CH

Connector Part Information
    • 12033709
    • 2-Way F Metri-Pack 280 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

TAN

848

Brake Switch Signal

B

BLK/WHT

451

Ground

Tail Lamps


Object Number: 236398 Size: CH

Connector Part Information
    • 12065862
    • 4-Way F Metri-Pack 280 Series, Sealed (BLK)

Pin

Wire Color

Circuit No.

Function

A

LT GRN

24

Backup Lamp Supply Voltage

B

BRN

9

Park Lamp Supply Voltage

C

YEL

18

Rear Stop/Turn Lamp Supply Voltage - Left

C

DK GRN

19

Rear Stop/Turn Lamp Supply Voltage - Right

E

BLK

150

Ground

Tractor/Trailer Receptacle


Object Number: 479413 Size: CH

Connector Part Information
    • 12077629
    • 7-Way M Split Terminal Connector (BLK)

Pin

Wire Color

Circuit No.

Function

A

WHT

22

Ground

B

BLK

951

Tractor Marker Lamps Relay

C

YEL

318

Left Rear Trailer Stop/Turn Lamp Supply Voltage

D

RED

950

Trailer Stop Lamps Relay

E

DK GRN

319

Right Rear Trailer Stop/Turn Lamp Supply Voltage

F

BRN

9

Park Lamp Supply Voltage

G

DK BLU

952

Air ABS Relay

Trailer Marker Lamp Switch


Object Number: 222636 Size: CH

Connector Part Information
    • 12052054
    • 4-Way M Metri-Pack 150 Series, (BLK)

Pin

Wire Color

Circuit No.

Function

A

GRY

8

Instrument Panel Lamp Supply Voltage

B

ORN

840

Battery Positive Voltage

C

DK GRN

21

Roof Clearance Lamps Switch Signal

D

BLK

250

Ground

Trailer Stop Lamp Relay


Object Number: 535912 Size: CH

Connector Part Information
    • 12129716
    • 4-Way F Metri-Pack 280 Series Sealed (BLK)

Pin

Wire Color

Circuit No.

Function

30

RED

1442

Battery Positive Voltage

85

WHT

17

Stop Lamp Switch Signal

86

BLK

150

Ground

87

RED

1411

Trailer Stop Relay-Normally Open Contact

Trailer Stop Lamp Switch


Object Number: 258230 Size: CH

Connector Part Information
    • 12065402
    • 4-Way F Metri-Pack 150 Series, Sealed (BRN)

Pin

Wire Color

Circuit No.

Function

A-B

--

--

Not Used-Sealed

C

ORN

1240

Battery Positive Voltage

D

WHT

17

Stop Lamp Switch Signal

Turn Signal/Hazard Flasher Module


Object Number: 222634 Size: CH

Connector Part Information
    • 12103751
    • 5-Way F Metri-Pack 630 Series (BLK)

Pin

Wire Color

Circuit No.

Function

1

--

--

Not Used

2

ORN

1540

Battery Positive Voltage

3

--

--

Not Used

4

PPL

16

Turn Signal Flasher Signal

4

BRN

27

Hazard Flasher Signal

5

BLK

150

Ground

Turn Signal Switch/Multifunction Switch C1


Object Number: 222621 Size: CH

Connector Part Information
    • 12004147
    • 11-Way F Pack-Con Series 1 (BLK)

Pin

Wire Color

Circuit No.

Function

D

GRY

8

Instrument Panel Lamp Supply Voltage

E-F

--

--

Not Used

G

BLK

28

Horn Relay Control

H

LT BLU

14

Left Turn Signal Lamps Supply Voltage

J

DK BLU

15

Right Turn Signal Lamps Supply Voltage

K

BRN

27

Hazard Flasher Signal

L

PPL

16

Turn Signal Flasher Signal

M

YEL

18

Left Rear Stop/Turn Lamp Supply Voltage

N

DK GRN

19

Right Rear Stop/Turn Lamp Supply Voltage

P

LT BLU

20

Stop Lamp Supply Voltage