GM Service Manual Online
For 1990-2009 cars only
Table 1: Ignition Switch Connector
Table 2: IP Wiring Harness Junction Block Connector
Table 3: Engine Wiring Harness Junction Block Connector
Table 4: Fuse Block Connector

Ignition Switch Connector


Object Number: 402052  Size: CH

Connector Part Information

    • 12077822
    • 48 Way M Metri-Pack 150 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A1

--

--

Not Used

A2

PNK

139

Turn and Backup Lamp Input from TURN-B/U Fuse

A3

LT BLU

1508

Turn/Hazard Lamp Flasher Output

A4-A5

--

--

Not Used

A6

DK BLU

15

RH Turn Signal Lamp Output

A7

LT BLU

14

LH Turn Signal Lamp Output

A8-A10

--

--

Not Used

A11

BLK

28

Horn Relay Output

A12

GRY

397

Throttle Actuator Control Module Output

A13

BRN

41

Cruise Control Input from CRUISE Fuse

A14

DK BLU

84

Throttle Actuator Control Module Output

A15

GRY/BLK

87

Throttle Actuator Control Module Output

A16-B1

--

--

Not Used

B2

BLK

150

Ignition Switch Ground (G 200)

B3

LT GRN

80

Multifunction Alarm Module Output

B4

TAN

159

Instrument Panel (IP) Wiring Harness Junction Block Output, Body Builder Provisions

B5

LT BLU

1134

Park Brake Switch Signal

B6-C1

--

--

Not Used

C2

BLK

150

Ignition Switch Ground (G 200)

C3-C4

--

--

Not Used

C5

PNK

3

Ignition Output to TAC, GAUGES and TURN-B/U Fuses

C6

ORN

300

Ignition Output to JACK, STEP, BRAKE, CRUISE, and A/C COMP Fuses

D1

YEL

5

Ignition Ouput to CRANK Fuse

D2

RED

342

Ignition Input from IGN B Fuse

D3-D4

--

--

Not Used

D5

RED

242

Ignition Input from IGN A Fuse

D6

BRN

4

Ignition Output to RADIO/ACC, WIPER Fuses and PWR ACCY 2 Circuit Breaker

E1

GRY

1696

Turn/Hazard Lamp Flasher Output

E2

LT BLU

20

Stoplamp Feed

E3

PPL

92

Wiper/Washer Harness Connector Output

E4

YEL

143

Input from WIPER Fuse

E5

BRN

96

Windshield Wiper Pulse Control Module Output

E6

DK GRN

19

RR Turn Signal Lamp Output

E7

YEL

18

LR Turn Signal Lamp Output

E8

ORN

140

Input from STOP/HAZ Fuse

E9

PPL

1697

Turn/Hazard Lamp Flasher Output

E10

--

--

Not Used

E11

LT GRN

11

High Beam Headlamps Output

E12

PPL

359

Low Beam Headlamps Output

E13

YEL

10

Input from Headlamps Switch

IP Wiring Harness Junction Block Connector


Object Number: 409595  Size: MF

IP Wiring Harness Junction Block Connector

Connector Part Information

    • 12146452
    • IP Wiring Harness Junction Block (GRY)

Pin

Wire Color

Circuit No.

Function

A

RED

542

Blower Feed from the BLOWER Fuse

B, C1-C6

--

--

Not Used

C7

BRN

341

Step Down Alarm Feed from the STEP ALARM Fuse

C8

GRY/BLK

745

Door Ajar Switch Signal to Indicator Lamp

C9

YEL/BLK

1131

Park Brake Switch Signal

D1

GRY

8

IP Lamps Dimming Input from the ILLUM Fuse

D2

GRY

914

Marker Lamps Feed from the MKR LPS Fuse

D3

LT GRN

24

Backup Lamp Feed from the Backup Lamp Switch

D4

WHT/BLK

235

Bulb Test Signal from the Diode Network

D5

DK GRN

29

Horn Feed from the Horn Relay

D6

BLK

150

Ground

D7

WHT

156

Courtesy Lamp Output from IP Lamps Dimmer Switch

D8

ORN

40

Courtesy/Dome Lamp Feed from the CTSY Fuse

D9

TAN

159

Key Reminder Switch Output

E1

YEL

43

Radio/ACC Feed from the RADIO-ACC Fuse

E2

ORN

1240

RADIO-BATT Feed from the RADIO-BAT Fuse

E3

ORN

1140

CIG LTR Feed from the CIG LTR Fuse

E4

ORN

1040

AUX PWR Feed from the AUX PWR Fuse

E5

ORN

1540

PWR ACCY 1 CKT BRKR Feed from the PWR ACCY 1 CKT BRKR

E6

YEL

243

PWR ACC 2 Feed from the PWR ACCY 2 CKT BRKR

F1-F3

--

--

Not Used

F5

BRN

141

Jack Down Alarm Feed from the JACK Fuse

F6

WHT

17

Stoplamp Output from the Stoplamp Switch

G1

YEL

909

Park Brake Pull Button Switch to Terminal 85 of the Park Brake Pull Button Relay

G2

BLK

150

Ground from Terminal 87A of the Park Brake Pull Button Relay

G3

--

--

Not Used

G4

PNK

39

DRL Relay Input from the GAUGES Fuse

G5

PPL

359

Output from the Headlamps Dimmer Switch, Low Beam, to Terminal 87A of the DRL Relay

G6

YEL

634

Daytime Running Lamp Diode Module Feed

G8

BLK

150

Hazard Turn Signal Flasher Ground

H1

LT BLU

1134

DRL Control Module Terminal A to Terminal 30 of the Park Brake Pull Button Relay

H3

BLK

150

Ground from Terminal 86 of the Park Brake Pull Button Relay

H4

TAN

12

Terminal 30 of the DRL Relay to the Headlamps

H6

LT GRN /BLK

592

DRL Relay coil

H7

PPL

1697

Turn/Hazard Flasher Output

H8

GRY

1696

Hazard Voltage Feed

H9

LT BLU

1508

Turn Signal Voltage Feed

J1

GRY

8

Multifunction Alarm Module Input from the ILLUM Fuse

J2

ORN

140

Multifunction Alarm Module Input from the STOP-HAZ Fuse

J3

LT GRN

80

Key Reminder Switch Signal

J4

--

--

Not Used

K1

BLK

150

Multifunction Alarm Module Ground

K2

BLK

150

Multifunction Alarm Module Ground

K3

YEL

234

Seat Belt Indicator Lamp Output

K4

PNK

39

Multifunction Alarm Module Input from the GAUGES Fuse

Engine Wiring Harness Junction Block Connector


Object Number: 409598  Size: MF

Engine Wiring Harness Junction Block Connector

Connector Part Information

    • 12146281
    • Engine Wiring Harness Junction Block (BLK)

Pin

Wire Color

Circuit No.

Function

A1

BLK/WHT

451

Fuel Pump Relay Ground

A3

GRY

120

Fuel Pump Motor Feed

A4

BLK

150

A/C Compressor Relay Ground

A6

DK GRN

59

A/C Compressor Clutch Solenoid Feed

A7

YEL

447

Starter Relay Output to the Starter Relay Control at the PCM

A9

RED

242

IGN A Fuse Input to the Starter Relay

B1

PNK

1039

FUEL PUMP Fuse Input to the Fuel Pump Relay

B2

RED

490

Fuel Pump Relay Output to the Fuel Pump

B3

DK GRN /WHT

465

Fuel Pump Relay Output to the Fuel Pump Relay Control at the PCM

B4

BRN

441

A/C CMPR Fuse Input to the A/C Compressor Relay

B5

--

--

Not Used

B6

DK GRN /WHT

459

A/C Compressor Relay Output to the A/C Compressor High Pressure Cutoff Switch

B7

PPL

6

Starter Relay Output to the Starter Solenoid

B8

--

--

Not Used

B9

PNK

739

ALT/START Fuse Input to the Starter Relay

C1

BLK

28

Horn Relay Output to the Horn Switch

C3

ORN

640

HORN Fuse Output to the Horn Relay

C4

PPL/WHT

906

Park Brake Alarm Relay Output to the Park Brake Actuator Position Switch

C6

ORN

920

Park Brake Alarm Relay Output to the Diode Network

D1

DK GRN

29

Horn Feed

D2

--

--

Not Used

D3

ORN

640

HORN Fuse Input to the Horn Relay

D4

--

--

Not Used

D5

BLK

150

Park Brake Alarm Relay Ground

D6

PNK

639

AUTO PARK Fuse Input to the Park Brake Alarm Relay

D7

BLK

150

Brake Lamps Relay Ground

D9

ORN

540

BRAKE LAMPS Fuse Input to the Brake Lamps Relay

E7

LT BLU

20

Stop Lamps Feed

E8

--

--

Not Used

E9

WHT

17

Stop Lamp Switch Output

F1

--

--

Not Used

F3

Bussed from H3

--

FUEL PUMP Fuse Input from the Ignition Switch

F5

--

--

Not Used

F7

Bussed from H7

--

ENG-I Fuse Input from the Ignition Switch

F9

Bussed from H9

--

ENG-RH Fuse Input from the Ignition Switch

F11

Bussed from H11

--

PCM-BATT Fuse Input from the Battery

G2

--

--

Not Used

G4

PNK

1039

FUEL PUMP Fuse Output to Fuel Pump Relay

G6

BRN

441

A/C CMPR Fuse Output to the A/C Compressor Relay

G8

PNK

539

ENG-I Fuse Output to the Engine Control Sensors

G10

PNK

239

ENG-RH Fuse Output to the Right Side Fuel Injectors and Ignition Coils

G12

ORN

440

PCM-BAT Fuse Output to the PCM

H1

--

--

Not Used

H3

PNK

3

Ignition Input,Provision For Body Builder

H5

ORN

300

Ignition Switch Output-Ignition 3

H7

PNK

3

AUTO PARK Fuse Input from the Ignition Switch

H9

PNK

3

ENG-LH Fuse Input from the Ignition Switch

H11

RED

2

BRAKE LAMPS Fuse Input from the Battery

J2-J6

--

--

Not Used

J8

PNK

639

AUTO PARK Fuse Output to the Park Brake Alarm Relay

J10

PNK

339

ENG-LH Fuse Output to the Left Side Fuel Injectors and Ignition Coils

J12

ORN

540

BRAKE LAMPS Fuse Output to the Brake Lamp Relay

K1-L6

--

--

Not Used

L8

PNK

739

--

L10

PNK

439

PCM-I Fuse Output to the PCM

L12

ORN

640

HORN Fuse Output to the Horn Relay

M1

RED

742

AUTO PARK Fuse Output to the Park Brake Pump Motor Relay

M2

RED

642

POWER BRAKE Fuse Output to the Power Brake Booster Pump Relay

M3

RED

542

BLOWER Fuse Ouput to the IP Wiring Harness Junction Block, Provisions for Body Builder

M4

RED

442

ABS Fuse Output to the EBCM

M5

RED

342

IGN B Fuse Output to the Ignition Switch

M6

RED

242

IGN A Fuse Output to the Starter Relay and Ignition Switch

M7

RED

142

BATTERY Fuse Output to the Fuse Block

M8

RED

42

LIGHTING Fuse Output to the Fuse Block

N1

Bussed from N2

--

AUTO PARK Fuse Input from the Battery

N2

Bussed from N3

--

POWER BRAKE Fuse Input from the Battery

N3

Bussed from N4

--

BLOWER Fuse Input from the Battery

N4

Bussed from N5

--

ABS Fuse Input from the Battery

N5

Bussed from N6

--

IGN B Fuse Input from the Battery

N6

Bussed from N7

--

IGN A Fuse Input from the Battery

N7

Bussed from N8

--

BATTERY Fuse Input from the Battery

N8

RED

2

LIGHTING Fuse Input from the Battery

P7

RED

2

A STUD Fuse Input from the Battery

P8

Bussed from P7

--

B STUD Fuse Input from the Battery

R7

--

--

A STUD Fuse Output to A Stud

R8

--

--

B STUD Fuse Output to the B Stud

Fuse Block Connector


Object Number: 409599  Size: SF

Fuse Block Connector

Connector Part Information

    • 12162133
    • Fuse Block (BLK)

Pin

Wire Color

Circuit No.

Function

A2

BRN

4

PWR ACCY 2 CKT BRKR Input from the Ignition Switch

A3

YEL

243

PWR ACCY 2 CKT BRKR Output to the IP Wiring Harness Junction Block

A6

RED

142

PWR ACCY 1 CKT BRKR 25 Input from the Engine Wiring Harness Junction Block

A7

ORN

1540

PWR ACCY 1 CKT BRKR Output to the IP Wiring Harness Junction Block, Provision for Body Builder

B2

Bussed from B4

--

RADIO BATT Fuse Input from the Engine Wiring Harness Junction Block

B4

RED

142

CIG LTR Fuse Input from the Engine Wiring Harness Junction Block

B6

Bussed from B4

--

AUX PWR Fuse Input from the Engine Wiring Harness Junction Block

B8

Bussed from B6

--

STOP/HAZ Fuse Input from the Engine Wiring Harness Junction Block

C1

ORN

1240

RADIO BATT Fuse Output to the IP Wiring Harness Junction Block, Provision for Body Builder

C3

ORN

1140

CIG LTR Fuse Output to the IP Wiring Harness Junction Block, Provision for Body Builder

C5

ORN

1040

AUX PWR Fuse Output to the IP Wiring Harness Junction Block, Provision for Body Builder

C7

ORN

140

STOP/HAZ Fuse Output to the Stoplamps Switch and Turn Signal Switch

D2

--

-

Not Used

D4

DK GRN

44

ILLUM Fuse Input from the IP Dimmer Switch

D6

YEL

5

CRANK Fuse Input from the Ignition Switch

D8

PNK

3

TAC Fuse Input from the Ignition Switch

E1

--

--

Not Used

E3

GRY

8

ILLUM Fuse Output to the Illumination Lamps

E5

PPL

806

CRANK Fuse Output to the PCM

E7

PNK

839

TAC Fuse Output to the TAC Module

F2

Bussed from F4

--

DATA Fuse Engine Input from the Wiring Harness Junction Block

F4

RED

42

DRL Fuse Input from the Engine Wiring Harness Junction Block

F6

Bussed from F4

--

PK LPS Fuse Input from the Engine Wiring Harness Junction Block

F8

Bussed from F6

--

CTSY Fuse Input from the Engine Wiring Harness Junction Block

G1

ORN

1340

DATA Fuse Output to the Data Link Connector

G3

ORN

340

DRL Fuse Output to the DRL Diode Module

G5

ORN

240

PK LPS Fuse Output to the Headlamps Switch

G7

ORN

40

CTSY Fuse Output to the IP Wiring Harness Junction Block, Provision for Body Builder

H2

Bussed from H4

--

WIPER Fuse Input from the Ignition Switch

H4

BRN

4

RADIO/ACC Fuse Input from the Ignition Switch

H6

Bussed from H8

--

TURN-BU Fuse Input from the Ignition Switch

H8

PNK

3

GAUGES Fuse Input from the Ignition Switch

J1

YEL

143

WIPER Fuse Output to the Wiper Switch and Control Module

J3

YEL

43

RADIO/ACC Fuse Output to the IP Wiring Harness Junction Block, Provision for Body Builder

J5

PNK

139

TURN-BU Fuse Output to Turn Signal Switch and Backup Lamps Switch

J7

PNK

39

GAUGES Fuse Output to the IP Cluster and DRL Controls

K2

BRN

9

FRT PARK Fuse Input from the Headlamps Switch

K4

Bussed from K2

--

MKR LPS Fuse Input from the Engine Wiring Harness Junction Block

K6

Bussed from K8

--

RH TAIL Fuse Input from the Engine Wiring Harness Junction Block

K8

BRN

9

LH TAIL Fuse Input from the Engine Wiring Harness Junction Block

L1

BRN

964

FRT PARK Fuse Output to the Forward Lamps

L3

GRY

914

MKR LPS Fuse Output to the License Lamps

L5

DK BLU

913

RH TAIL Fuse Output to the Right Rear Lamps

L7

PPL

912

LH TAIL Fuse Output to the Left Rear Lamps

M2

Bussed from M4

--

STEP Fuse Input from the Ignition Switch

M4

ORN

300

BRAKE Fuse Input from the Ignition Switch

M6

Bussed from M2

--

JACK Fuse Input from the Ignition Switch

M8

Bussed from M4

--

CRUISE Fuse Input from the Ignition Switch

N1

BRN

341

STEP Fuse Output to the IP Wiring Harness Junction Block, Provisions for Body Builder

N3

BRN

241

BRAKE Fuse Output to the Stoplamp Switch and the EBCM

N5

BRN

141

JACK Fuse Output to the IP Wiring Harness Junction Block, Provisions for Body Builder

N7

BRN

41

CRUISE Fuse Output to the Cruise Control Switch