GM Service Manual Online
For 1990-2009 cars only
Connector 1: Ambient Light Sensor
Connector 2: Backup Lamp - Left
Connector 3: Backup Lamp - Right
Connector 4: Backup Lamp Switch (M86)
Connector 5: Center High Mounted Stop Lamps (CHMSL)
Connector 6: Console Flood Lamp
Connector 7: Dome Lamp
Connector 8: Door Jamb Switch - Left Front
Connector 9: Door Jamb Switch - Left Rear (Except Panel Van)
Connector 10: Door Jamb Switch - Right Front
Connector 11: Door Jamb Switch - Right Rear (Except Panel Van)
Connector 12: Fog Lamp - Left Front (T37)
Connector 13: Fog Lamp - Right Front (T37)
Connector 14: Fog Lamp Switch (T37)
Connector 15: Hazard Switch
Connector 16: Headlamp - Left
Connector 17: Headlamp - Right
Connector 18: Instrument Panel (I/P) Dimmer Switch
Connector 19: License Lamp - Left
Connector 20: License Lamp - Right
Connector 21: Marker Lamp - Left Front
Connector 22: Marker Lamp - Left Rear
Connector 23: Marker Lamp - Right Front
Connector 24: Marker Lamp - Right Rear
Connector 25: Park/Turn Signal/DRL Lamp - Left Front
Connector 26: Park/Turn Signal/DRL Lamp - Right Front
Connector 27: PRNDL Lamp
Connector 28: Stop Lamp Switch
Connector 29: Tail/Stop and Turn Signal Lamp - Left
Connector 30: Tail/Stop and Turn Signal Lamp - Right
Connector 31: Turn Signal/Multifunction Switch C1
Connector 32: Turn Signal/Multifunction Switch C2

Ambient Light Sensor


Object Number: 82383  Size: CH

Connector Part Information

  • OEM: 12059249
  • Service: 12085535
  • Description: 2-Way F Metri-Pack 150 Series (NA)

Terminal Part Information

  • Terminal/Tray: 12064971/5
  • Core/Insulation Crimp: E/C
  • Release Tool/Test Probe: 12094429/J-35616-2A (GY)

Ambient Light Sensor

Pin

Wire Color

Circuit No.

Function

A

L-GN/BK

1137

DRL Ambient Light Sensor Signal

B

YE/BK

1138

DRL Ambient Light Sensor Low Reference

Backup Lamp - Left


Object Number: 68721  Size: CH

Connector Part Information

  • OEM: 15300027
  • Service: 12101855
  • Description: 2-Way F Metri-Pack 280 Series Sealed (BK)

Terminal Part Information

  • Terminal/Tray: 12077411/2
  • Core/Insulation Crimp: 2/5
  • Release Tool/Test Probe: 12094430/J-35616-4A (PU)

Backup Lamp - Left

Pin

Wire Color

Circuit No.

Function

A

L-GN

24

Backup Lamp Supply Voltage

B

BK

750

Ground

Backup Lamp - Right


Object Number: 68721  Size: CH

Connector Part Information

  • OEM: 15300027
  • Service: 12101855
  • Description: 2-Way F Metri-Pack 280 Series Sealed (BK)

Terminal Part Information

  • Terminal/Tray: 12077411/2
  • Core/Insulation Crimp: 2/5
  • Release Tool/Test Probe: 12094430/J-35616-4A (PU)

Backup Lamp - Right

Pin

Wire Color

Circuit No.

Function

A

L-GN

24

Backup Lamp Supply Voltage

B

BK

850

Ground

Backup Lamp Switch (M86)


Object Number: 635009  Size: CH

Connector Part Information

  • OEM: 12052641
  • Service: 12102747
  • Description: 2-Way F Metri-Pack 150 Series (BK)

Terminal Part Information

  • Terminal/Tray: 12048074/2
  • Core/Insulation Crimp: E/1
  • Release Tool/Test Probe: 12094429/J-35616-2A (GY)

Backup Lamp Switch (M86)

Pin

Wire Color

Circuit No.

Function

A

PK

1639

Ignition 1 Voltage

B

L-GN

24

Backup Lamp Supply Voltage

Center High Mounted Stop Lamps (CHMSL)


Object Number: 877923  Size: CH

Connector Part Information

  • OEM: 15332129
  • Service: 15306425
  • Description: 2-Way Socket (GY)

Terminal Part Information

  • Terminal/Tray: 12191812/19
  • Core/Insulation Crimp: E/C
  • Release Tool/Test Probe: 15315247/J-35616-2A (GY)

Center High Mounted Stop Lamps (CHMSL)

Pin

Wire Color

Circuit No.

Function

A

BN

20

Stop Lamp Supply Voltage

B

BK/WH

850

Ground

Console Flood Lamp


Object Number: 82383  Size: CH

Connector Part Information

  • OEM: 12047662
  • Service: 12085535
  • Description: 2-Way F Metri-Pack 150 Series (BK)

Terminal Part Information

  • Terminal/Tray: 12064971/5
  • Core/Insulation Crimp: E/C
  • Release Tool/Test Probe: 12094429/J-35616-2A (GY)

Console Flood Lamp

Pin

Wire Color

Circuit No.

Function

A

GY

8

Instrument Panel Lamps Dimmer Switch Signal

B

BK

750

Ground

Dome Lamp


Object Number: 130635  Size: CH

Connector Part Information

  • OEM: 12045813
  • Service: 12101889
  • Description: 4-Way F Metri-Pack 150 Series (WH)

Terminal Part Information

  • Pins: A, B, D
  • Terminal/Tray: 12064971/5
  • Core/Insulation Crimp: E/C
  • Release Tool/Test Probe: 12094429/J-35616-2A (GY)

Dome Lamp

Pin

Wire Color

Circuit No.

Function

A

BK

750

Ground

B

GY

157

Interior Lamp Control

C

--

--

Not Used

D

D-BU/WH

149

Courtesy Lamp Supply Voltage

Door Jamb Switch - Left Front


Object Number: 1538760  Size: CH

Connector Part Information

  • OEM: 15449028
  • Service: 88987993
  • Description: 2-Way F 150 GT Series Sealed (BK)

Terminal Part Information

  • Terminal/Tray: 15326267/19
  • Core/Insulation Crimp: E/4
  • Release Tool/Test Probe: 15315247/J-35616-2A (GY)

Door Jamb Switch - Left Front

Pin

Wire Color

Circuit No.

Function

A

GY/BK

745

Left Front Door Ajar Switch Signal

B

BK/WH

1251

Ground

Door Jamb Switch - Left Rear (Except Panel Van)


Object Number: 1538760  Size: CH

Connector Part Information

  • OEM: 15449028
  • Service: 88987993
  • Description: 2-Way F 150 GT Series Sealed (BK)

Terminal Part Information

  • Terminal/Tray: 15326267/19
  • Core/Insulation Crimp: E/4
  • Release Tool/Test Probe: 15315247/J-35616-2A (GY)

Door Jamb Switch - Left Rear (Except Panel Van)

Pin

Wire Color

Circuit No.

Function

A

L-BU/BK

747

Left Rear Door Ajar Switch Signal

B

BK/WH

1251

Ground

Door Jamb Switch - Right Front


Object Number: 1538760  Size: CH

Connector Part Information

  • OEM: 15449028
  • Service: 88987993
  • Description: 2-Way F 150 GT Series Sealed (BK)

Terminal Part Information

  • Terminal/Tray: 15326267/19
  • Core/Insulation Crimp: E/4
  • Release Tool/Test Probe: 15315247/J-35616-2A (GY)

Door Jamb Switch - Right Front

Pin

Wire Color

Circuit No.

Function

A

TN/WH

746

Right Front Door Ajar Switch Signal

B

BK/WH

1551

Ground

Door Jamb Switch - Right Rear (Except Panel Van)


Object Number: 1538760  Size: CH

Connector Part Information

  • OEM: 15449028
  • Service: 88987993
  • Description: 2-Way F 150 GT Series Sealed (BK)

Terminal Part Information

  • Terminal/Tray: 15326267/19
  • Core/Insulation Crimp: E/4
  • Release Tool/Test Probe: 15315247/J-35616-2A (GY)

Door Jamb Switch - Right Rear (Except Panel Van)

Pin

Wire Color

Circuit No.

Function

A

L-GN/BK

748

Right Rear Door Ajar Switch Signal

B

BK/WH

1551

Ground

Fog Lamp - Left Front (T37)


Object Number: 684797  Size: CH

Connector Part Information

  • OEM: 12059183
  • Service: 12101898
  • Description: 2-Way F Metri-Pack 280 Series Sealed (BK)

Terminal Part Information

  • Terminal/Tray: 12077411/2
  • Core/Insulation Crimp: 2/5
  • Release Tool/Test Probe: 12094430/J-35616-4A (PU)

Fog Lamp - Left Front (T37)

Pin

Wire Color

Circuit No.

Function

A

PU

2234

Front Fog Lamp Supply Voltage

B

BK

150

Ground

Fog Lamp - Right Front (T37)


Object Number: 684797  Size: CH

Connector Part Information

  • OEM: 12059183
  • Service: 12101898
  • Description: 2-Way F Metri-Pack 280 Series Sealed (BK)

Terminal Part Information

  • Terminal/Tray: 12077411/2
  • Core/Insulation Crimp: 2/5
  • Release Tool/Test Probe: 12094430/J-35616-4A (PU)

Fog Lamp - Right Front (T37)

Pin

Wire Color

Circuit No.

Function

A

PU

2234

Front Fog Lamp Supply Voltage

B

BK

250

Ground

Fog Lamp Switch (T37)


Object Number: 39660  Size: CH

Connector Part Information

  • OEM: 12047785
  • Service: 12102900
  • Description: 4-Way F Metri-Pack 150 Series (BK)

Terminal Part Information

  • Pins: A, B, D
  • Terminal/Tray: 12064971/5
  • Core/Insulation Crimp: E/C
  • Release Tool/Test Probe: 12094429/J-35616-2A (GY)

Fog Lamp Switch (T37)

Pin

Wire Color

Circuit No.

Function

A

BK/WH

651

Ground

B

GY

8

Instrument Panel Lamps Dimmer Switch Signal

C

--

--

Not Used

D

OG

192

Front Fog Lamp Switch Signal

Hazard Switch


Object Number: 39665  Size: CH

Connector Part Information

  • OEM: 12089248
  • Service: 12102900
  • Description: 4-Way F Metri-Pack 150 Series (WH)

Terminal Part Information

  • Pins: A, B, D
  • Terminal/Tray: 12064971/5
  • Core/Insulation Crimp: E/C
  • Release Tool/Test Probe: 12094429/J-35616-2A (GY)

Hazard Switch

Pin

Wire Color

Circuit No.

Function

A

BK/WH

651

Ground

B

GY

8

Instrument Panel Lamps Dimmer Switch Signal

C

--

--

Not Used

D

WH

111

Hazard Switch Signal

Headlamp - Left


Object Number: 1424764  Size: CH

Connector Part Information

  • OEM: 15422250
  • Service: 88987995
  • Description: 3-Way F GT 150 Series Sealed (D-GY)

Terminal Part Information

  • Terminal/Tray: 12191819/8
  • Core/Insulation Crimp: E/A
  • Release Tool/Test Probe: 15315247/J-35616-2A (GY)

Headlamp - Left

Pin

Wire Color

Circuit No.

Function

A

YE

712

Left Headlamp Low Beam Supply Voltage

B

BK

150

Ground

C

D-GN/WH

711

Left Headlamp High Beam Supply Voltage

Headlamp - Right


Object Number: 1424764  Size: CH

Connector Part Information

  • OEM: 15422250
  • Service: 88987995
  • Description: 3-Way F GT 150 Series Sealed (D-GY)

Terminal Part Information

  • Terminal/Tray: 12191819/8
  • Core/Insulation Crimp: E/A
  • Release Tool/Test Probe: 15315247/J-35616-2A (GY)

Headlamp - Right

Pin

Wire Color

Circuit No.

Function

A

TN/WH

312

Right Headlamp Low Beam Supply Voltage

B

BK

250

Ground

C

L-GN/BK

311

Right Headlamp High Beam Supply Voltage

Instrument Panel (I/P) Dimmer Switch


Object Number: 808685  Size: CH

Connector Part Information

  • OEM: 12020299
  • Service: 12102566
  • Description: 5-Way F P/C EDGBD STD (WH)

Terminal Part Information

  • Pins: B, C
  • Terminal/Tray: 12040511/3
  • Core/Insulation Crimp: E/A
  • Release Tool/Test Probe: 12094429/J-35616-4A (PU)

Instrument Panel (I/P) Dimmer Switch

Pin

Wire Color

Circuit No.

Function

A

GY

157

Courtesy Lamp Control

B

PU

719

Low Reference

C

D-GN

44

Instrument Panel Lamp Dimmer Switch Signal

D

--

--

Not Used

E

BK

550

Ground

License Lamp - Left


Object Number: 744036  Size: CH

Connector Part Information

  • OEM: 12110053
  • Service: 12141388
  • Description: 2-Way F Lamp Socket Wedge Base W2 Sealed (L-GY)

Terminal Part Information

  • Terminal/Tray: 12124471/5
  • Core/Insulation Crimp: 2/3
  • Release Tool/Test Probe: 12094430/N/A

License Lamp - Left

Pin

Wire Color

Circuit No.

Function

A

BN

9

License Lamp Supply Voltage

B

BK

850

Ground

License Lamp - Right


Object Number: 744036  Size: CH

Connector Part Information

  • OEM: 12110053
  • Service: 12141388
  • Description: 2-Way F Lamp Socket Wedge Base Sealed W2 (L-GY)

Terminal Part Information

  • Terminal/Tray: 12124471/5
  • Core/Insulation Crimp: 2/3
  • Release Tool/Test Probe: 12094430/N/A

License Lamp - Right

Pin

Wire Color

Circuit No.

Function

A

BN

9

License Lamp Supply Voltage

B

BK

850

Ground

Marker Lamp - Left Front


Object Number: 68721  Size: CH

Connector Part Information

  • OEM: 15300027
  • Service: 12101855
  • Description: 2-Way F Metri-Pack 280 Series Sealed (BK)

Terminal Part Information

  • Terminal/Tray: 12077411/2
  • Core/Insulation Crimp: 2/5
  • Release Tool/Test Probe: 12094430/J-35616-4A (PU)

Marker Lamp - Left Front

Pin

Wire Color

Circuit No.

Function

A

BN

9

Park Lamp Supply Voltage

B

BK

150

Ground

Marker Lamp - Left Rear


Object Number: 635009  Size: CH

Connector Part Information

  • OEM: 12052641
  • Service: 12102747
  • Description: 2-Way F Metri-Pack 150 Series Sealed (BK)

Terminal Part Information

  • Terminal/Tray: See Terminal Repair Kit
  • Core/Insulation Crimp: See Terminal Repair Kit
  • Release Tool/Test Probe: See Terminal Repair Kit

Marker Lamp - Left Rear

Pin

Wire Color

Circuit No.

Function

A

BN

9

Park Lamp Supply Voltage

B

BK

750

Ground

Marker Lamp - Right Front


Object Number: 68721  Size: CH

Connector Part Information

  • OEM: 15300027
  • Service: 12101855
  • Description: 2-Way F Metri-Pack 280 Series Sealed (BK)

Terminal Part Information

  • Terminal/Tray: 12077411/2
  • Core/Insulation Crimp: 2/5
  • Release Tool/Test Probe: 12094430/J-35616-4A (PU)

Marker Lamp - Right Front

Pin

Wire Color

Circuit No.

Function

A

BN

9

Park Lamp Supply Voltage

B

BK

250

Ground

Marker Lamp - Right Rear


Object Number: 635009  Size: CH

Connector Part Information

  • OEM: 12052641
  • Service: 12102747
  • Description: 2-Way F Metri-Pack 150 Series Sealed (BK)

Terminal Part Information

  • Terminal/Tray: See Terminal Repair Kit
  • Core/Insulation Crimp: See Terminal Repair Kit
  • Release Tool/Test Probe: See Terminal Repair Kit

Marker Lamp - Right Rear

Pin

Wire Color

Circuit No.

Function

A

BN

9

Park Lamp Supply Voltage

B

BK

850

Ground

Park/Turn Signal/DRL Lamp - Left Front


Object Number: 845637  Size: CH

Connector Part Information

  • OEM: 7900-1486-016
  • Service: 88986266
  • Description: 3-Way MISC Sealed (BK)

Terminal Part Information

  • Terminal/Tray: 7116-4102-08/9
  • Core/Insulation Crimp: E/1
  • Release Tool/Test Probe: 12094430/J-35616-2A (GY)

Park/Turn Signal/DRL Lamp - Left Front

Pin

Wire Color

Circuit No.

Function

1

BK

250

Ground

2

BN

9

Park Lamp Supply Voltage

3

L-BU

14

Left Turn Signal Lamp Supply Voltage

Park/Turn Signal/DRL Lamp - Right Front


Object Number: 845637  Size: CH

Connector Part Information

  • OEM: 7900-1486-016
  • Service: 88986266
  • Description: 3-Way MISC Sealed (BK)

Terminal Part Information

  • Terminal/Tray: 7116-4102-08/9
  • Core/Insulation Crimp: E/1
  • Release Tool/Test Probe: 12094430/J-35616-2A (GY)

Park/Turn Signal/DRL Lamp - Right Front

Pin

Wire Color

Circuit No.

Function

1

BK

150

Ground

2

BN

9

Park Lamp Supply Voltage

3

D-BU

15

Right Turn Signal Lamp Supply Voltage

PRNDL Lamp


Object Number: 810080  Size: CH

Connector Part Information

  • OEM: 12162083
  • Service: 8901283
  • Description: 2-Way F Lamp Socket Bulb Base Type W2 Axial (BK)

Terminal Part Information

  • Terminal/Tray: See Terminal Repair Kit
  • Core/Insulation Crimp: See Terminal Repair Kit
  • Release Tool/Test Probe: See Terminal Repair Kit

PRNDL Lamp

Pin

Wire Color

Circuit No.

Function

A

GY

8

Instrument Panel Lamps Dimmer Switch Signal

B

BK

1250

Ground

Stop Lamp Switch


Object Number: 73251  Size: CH

Connector Part Information

  • OEM: 12033701
  • Service: 12117346
  • Description: 2-Way F Metri-Pack 480 Series (GY)

Terminal Part Information

  • Pins: A
  • Terminal/Tray: 12015860/4
  • Core/Insulation Crimp: E/A
  • Release Tool/Test Probe: 12094430/J-35616-40 (BU)
  • Pins: B
  • Terminal/Tray: 12124304/2
  • Core/Insulation Crimp: See Terminal Repair Kit
  • Release Tool/Test Probe: 12094430/J-35616-40 (BU)

Stop Lamp Switch

Pin

Wire Color

Circuit No.

Function

A

RD/WH

140

Battery Positive Voltage

B

L-BU

20

Stop Lamp Supply Voltage

L-BU

20

Stop Lamp Supply Voltage

Tail/Stop and Turn Signal Lamp - Left


Object Number: 847206  Size: CH

Connector Part Information

  • OEM: 12040977
  • Service: 12085492
  • Description: 3-Way F Metri-Pack 280 Series Sealed (BK)

Terminal Part Information

  • Terminal/Tray: 12077411/2
  • Core/Insulation Crimp: 2/5
  • Release Tool/Test Probe: 12094430/J-35616-4A (PU)

Tail/Stop and Turn Signal Lamp - Left

Pin

Wire Color

Circuit No.

Function

A

YE

18

Left Rear Stop/Turn Lamp Supply Voltage

B

BN

9

Park Lamp Supply Voltage

C

BK

750

Ground

Tail/Stop and Turn Signal Lamp - Right


Object Number: 847206  Size: CH

Connector Part Information

  • OEM: 12040977
  • Service: 12085492
  • Description: 3-Way F Metri-Pack 280 Series Sealed (BK)

Terminal Part Information

  • Terminal/Tray: 12077411/2
  • Core/Insulation Crimp: 2/5
  • Release Tool/Test Probe: 12094430/J-35616-4A (PU)

Tail/Stop and Turn Signal Lamp - Right

Pin

Wire Color

Circuit No.

Function

A

D-GN

19

Right Rear Stop/Turn Lamp Supply Voltage

B

BN

9

Park Lamp Supply Voltage

C

BK

850

Ground

Turn Signal/Multifunction Switch C1


Object Number: 1376709  Size: CH

Connector Part Information

  • OEM: NACP-08-S
  • Service: 88987843
  • Description: 8-Way F JST NAC-I Series (WH)

Terminal Part Information

  • Pins: 1-4
  • Terminal/Tray: See Terminal Repair Kit
  • Core/Insulation Crimp: See Terminal Repair Kit
  • Release Tool/Test Probe: See Terminal Repair Kit

Turn Signal/Multifunction Switch C1

Pin

Wire Color

Circuit No.

Function

1

BK/WH

651

Ground

2

WH

103

Headlamp Switch On Signal

3

BN/WH

301

Park Lamp Switch On Signal

4

PU/WH

549

Headlamp Switch Headlamps Off Signal

5-8

--

--

Not Used

Turn Signal/Multifunction Switch C2


Object Number: 845610  Size: CH

Connector Part Information

  • OEM: 15393435
  • Service: 88986438
  • Description: 10-Way F Micro 64 (GY)

Terminal Part Information

  • Pins: B-H
  • Terminal/Tray: 12177007/19
  • Core/Insulation Crimp: E/2
  • Release Tool/Test Probe: 12180559-1/J-35616-64B (L-BU)

Turn Signal/Multifunction Switch C2

Pin

Wire Color

Circuit No.

Function

A

--

--

Not Used

B

BK/WH

651

Ground

C

BN

1356

Flash To Pass Switch Signal

D

PU

524

Headlamp Dimmer Switch High Beam Signal

E

PK/WH

1970

Headlamp Low Beam Relay Control

F

YE

10

Headlamp Switch Signal

G

YE/BK

1418

Left Rear Turn Signal Switch Signal

H

D-GN/WH

1419

Right Rear Turn Signal Switch Signal

J-K

--

--

Not Used