GM Service Manual Online
For 1990-2009 cars only
Table 1: Cigarette Lighter Connector
Table 2: In-Line Fuse Connector
Table 3: Auxiliary Power Outlet Connector
Table 4: Upfitter Provisions Relay Connector
Table 5: IP Relay Center Connector
Table 6: IP Fuse Block Connector (Gasoline)
Table 7: IP Fuse Block Connector (Diesel)
Table 8: Underhood Fuse-Relay Center Connector
Table 9: Underhood Fuse-Relay Center Connector (6.5L)
Table 10: Underhood Fuse-Relay Center Connector (7.4L)
Table 11: Underhood Fuse - Relay Center Connector (Export)

Cigarette Lighter Connector


Object Number: 38228  Size: CH

Connector Part Information

    • 12047699
    • 1 Way M SLV & 1 C/LTR P25 (GRY)

Pin

Wire Color

Circuit No.

Function

A

ORN

640

Fuse Output - Battery - Type III Fuse

B

BLK

150

Ground

In-Line Fuse Connector


Object Number: 62489  Size: CH

Connector Part Information

    • 12085030
    • 2 Way Metri-pack 630 Series, Sealed, P2S (BLK)

Pin

Wire Color

Circuit No.

Function

A

RED

1

Battery Output (Unfused)

B

ORN

1240

Fuse Output - Battery - Type III Fuse

Auxiliary Power Outlet Connector


Object Number: 258167  Size: CH

Connector Part Information

    • 12033934
    • 2 Way F 56 Series LK Type (GRY)

Pin

Wire Color

Circuit No.

Function

A

ORN

840

Fuse Output - Battery - Type III Fuse

B

BLK

150

Ground

Upfitter Provisions Relay Connector


Object Number: 68749  Size: CH

Connector Part Information

    • 12124169
    • 4 Way F Mixed Series (BLK)

Pin

Wire Color

Circuit No.

Function

30

RED

1042

Fuse Output - Battery - Type II Fuse

85

BLK

150

Ground

86

YEL

43

Fuse Output - Accessory - Type III Fuse

87

RED

1042

Fuse Output - Battery - Type II Fuse

IP Relay Center Connector


Object Number: 68798  Size: CH

Connector Part Information

    • 12146836
    • 30 Way F Metri-pack 280 Series Flex Lock (BLK)

Pin

Wire Color

Circuit No.

Function

A1-A9

--

--

Not Used

B1

ORN

340

Fuse Output - Battery - Type III Fuse

B2

PPL

359

Headlamp Feed

B3

PNK

39

Fuse Output - IGN 1 - Type III Fuse

B4-B6

--

--

Not Used

B7

PPL

16

Turn Signal Flasher Output

B8

LT GRN

62

Hazard Indicator Lamp Feed

B9

LT BLU

1508

Turn Signal Voltage

C1

LT GRN/BLK

592

DRL Relay Output (Coil)

C2

--

--

Not Used

C3

TAN

12

Low Beam Headlamp Feed

C4-C7

--

--

Not Used

C8

BLK

150

Ground

C9-D9

--

--

Not Used

IP Fuse Block Connector (Gasoline)


Object Number: 39797  Size: CH

Connector Part Information

    • 12110746
    • Fuse Block Assembly Metri-pack 280 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A2

BRN

4

IGN Switch Output (Accessory)

A3

YEL

343

Fuse Output - Accessory - Type III Fuse

A6

RED

142

Fuse Output - Battery - Type II Fuse

A7

ORN

540

Fuse Output - Battery - Type III Fuse

B2

--

--

Not Used

B4

RED

142

Fuse Output - Battery - Type II Fuse

B6-B8

--

--

Not Used

C1

ORN

1140

Fuse Output - Battery - Type III Fuse

C3

ORN

640

Fuse Output - Battery - Type III Fuse

C5

ORN

840

Fuse Output - Battery - Type III Fuse

C7

ORN

140

Fuse Output - Battery - Type III Fuse

D2

WHT

1390

IGN Switch Output (OFF, RUN, START)

D4

GRY

8

IP Lamp Feed

D6

YEL

5

IGN Switch Output (START)

D8

RED

142

Fuse Output - Battery - Type III Fuse

E1

PNK

1020/1020

Fuse Output (OFF, RUN, START)

E3

DK GRN

44

IP Lamps Dimmer Switch Output

E5

PPL

806

Fuse Output - START - Type III Fuse

E7

ORN

1440

Fuse Output - Battery - Type III Fuse

F2

--

--

Not Used

F4

RED

42

Fuse Output - Battery - Type II Fuse

F6-F8

--

--

Not Used

G1

ORN

1740

Fuse Output - Battery - Type III Fuse

G3

ORN

340

Fuse Output - Battery - Type III Fuse

G5

ORN

240

Fuse Output - Battery - Type III Fuse

G7

ORN

40

Fuse Output - Battery - Type III Fuse

H2-H4

--

--

Not Used

H6

PNK

3

IGN Switch Output (IGN 1)

H8-J1

--

--

Not Used

J3

PNK

139

Fuse Output - IGN 1 - Type III Fuse

J5

YEL

1139

Fuse Output - IGN 1 - Type III Fuse

J7

PNK

39

Fuse Output - IGN 1 - Type III Fuse

K2-K4

--

--

Not Used

K6

BRN

4

Not Used

K8

RED

142

Fuse Output - Accessory - Type III Fuse

L1

--

--

Not Used

L3

YEL

43

Fuse Output - Accessory - Type III Fuse

L5

YEL

143

Fuse Output - Accessory - Type III Fuse

L7

ORN

1040

Fuse Output - Battery - Type III Fuse

M2

--

--

Not Used

M4

ORN

300

IGN Switch Output (IGN 3)

M6-M8

--

--

Not Used

N1

BRN

341

Fuse Output - IGN 3 - Type III Fuse

N3

BRN

441

Fuse Output - IGN 3 - Type III Fuse

N5

BRN

141

Fuse Output - IGN 3 - Type III Fuse

N7

BRN/BRN

41/41

Fuse Output - IGN 3 - Type III Fuse

IP Fuse Block Connector (Diesel)


Object Number: 39797  Size: CH

Connector Part Information

    • 12110746
    • Fuse Block Assembly Metri-pack 280 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A2

BRN

4

IGN Switch Output (Accessory)

A3

YEL

343

Fuse Output - Accessory - Type III Fuse

A6

RED

142

Fuse Output - Battery - Type II Fuse

A7

ORN

540

Fuse Output - Battery - Type III Fuse

B2

--

--

Not Used

B4

RED

142

Fuse Output - Battery - Type II Fuse

B6-B8

--

--

Not Used

C1

ORN

1140

Fuse Output - Battery - Type III Fuse

C3

ORN

640

Fuse Output - Battery - Type III Fuse

C5

ORN

840

Fuse Output - Battery - Type III Fuse

C7

ORN

140

Fuse Output - Battery - Type III Fuse

D2

WHT

1390

IGN Switch Output (OFF, RUN, START)

D4

GRY

8

IP Lamp Feed

D6

YEL

5

IGN Switch Output (START)

D8

RED

142

Fuse Output - Battery - Type III Fuse

E1

PNK

1020/1020

Fuse Output (OFF, RUN, START)

E3

DK GRN

44

IP Lamps Dimmer Switch Output

E5

PPL

806

Fuse Output - START - Type III Fuse

E7

ORN

1440

Fuse Output - Battery - Type III Fuse

F2

--

--

Not Used

F4

RED

42

Fuse Output - Battery - Type II Fuse

F6-F8

--

--

Not Used

G1

ORN

1740

Fuse Output - Battery - Type III Fuse

G3

ORN

340

Fuse Output - Battery - Type III Fuse

G5

ORN

240

Fuse Output - Battery - Type III Fuse

G7

ORN

40

Fuse Output - Battery - Type III Fuse

H2-H4

--

--

Not Used

H6

PNK

3

IGN Switch Output (IGN 1)

H8-J1

--

--

Not Used

J3

PNK

139

Fuse Output - IGN 1 - Type III Fuse

J5

YEL

1139

Fuse Output - IGN 1 - Type III Fuse

J7

PNK

39

Fuse Output - IGN 1 - Type III Fuse

K2-K4

--

--

Not Used

K6

BRN

4

IGN Switch Output (Accessory)

K8

RED

142

Fuse Output - Accessory - Type III Fuse

L1

--

--

Not Used

L3

YEL

43

Fuse Output - Accessory - Type III Fuse

L5

YEL

143

Fuse Output - Accessory - Type III Fuse

L7

ORN

1040

Fuse Output - Battery - Type III Fuse

M2

--

--

Not Used

M4

ORN

300

IGN Switch Output (IGN 3)

M6-M8

--

--

Not Used

N1

BRN

341

Fuse Output - IGN 3 - Type III Fuse

N3

BRN

441

Fuse Output - IGN 3 - Type III Fuse

N5

BRN

141

Fuse Output - IGN 3 - Type III Fuse

N7

BRN

41

Fuse Output - IGN 3 - Type III Fuse

Underhood Fuse-Relay Center Connector


Object Number: 68800  Size: CH

Connector Part Information

    • 12146281
    • Electrical Center (BLK)

Pin

Wire Color

Circuit No.

Function

A1

BLK/WHT

451

Engine Control Module Ground

A3

GRY

120

Fuel Pump Motor Feed

A4

BLK

150

Ground

A6

RED

242

Fuse Output - Battery - Type II Fuse

A7-A9

--

--

Not Used

B1

ORN

440

Fuse Output - Battery - Type III Fuse

B2

RED

490

Fuel Pump Relay Feed - Primer

B3

DK GRN/WHT

465

Fuel Pump Relay Feed (Coil)

B4

PPL

6

Starter Solenoid Feed

B5

--

--

Not Used

B6

YEL

1737

Transmission Mounted Neutral Safety Switch Output

B7-B9

--

--

Not Used

C1

DK GRN/WHT

459

A/C Compressor Control Relay Output (Coil)

C3

ORN

1240

Fuse Output - Battery - Type III Fuse

C4

BLK

28

Horn Relay Control

C6

ORN

740

Fuse Output - Horn - Type lll Fuse

D1

DK GRN

59

A/C Compressor Clutch Solenoid Feed

D2

--

--

Not Used

D3

PNK

639

Fuse Output - IGN 1 - Type III Fuse

D4

DK GRN

29

Horn Control

D5

--

--

Not Used

D6

ORN

740

Fuse Output - Horn - Type lll Fuse

D7

BLK

28

Horn Relay Output (Coil)

D9

ORN

740

Fuse Output - Battery - Type III Fuse

E7

DK GRN

29

Horn Feed

E8

--

--

Not Used

E9

ORN

740

Fuse Output - Battery - Type III Fuse

F1-G6

--

--

Not Used

G8

PNK

639

Fuse Output - IGN 1 - Type III Fuse

G10

--

--

Not Used

G12

ORN

440

Fuse Output - Battery - Type III Fuse

H1-H3

--

--

Not Used

H5

RED

542

Fuse Output - Battery - Type ll Fuse

H7

PNK

3

IGN Switch Output (ECM 1)

H9

--

--

Not Used

H11

RED

2

Fuse Output - Battery - Type l Fuse

J6

RED

1542

Fuse Output - Battery - Type ll Fuse

J8

PNK

439

Fuse Output - IGN 1 - Type III Fuse

J10

--

--

Not Used

J12

ORN

740

Fuse Output - Battery - Type III Fuse

K1

PPL

680

Brake Warning Indicator Lamp Output

K3

DK GRN

59/59

A/C Compressor Clutch Solenoid Feed

K5

RED

542

Fuse Output - Battery - Type II Fuse

K7

PNK

3

IGN Switch Output (IGN 1)

K9

--

--

Not Used

K11

--

--

Not Used

L2

TAN/WHT

33

Brake Warning Indicator Lamp Output

L4

BLK

150

Ground

L6

RED

1542

Fuse Output - Battery - Type II Fuse

L8

PNK

539

Fuse Output - IGN 1 - Type II Fuse

L10

--

--

Not Used

L12

ORN

1240

Fuse Output - Battery - Type III Fuse

M1-M2

--

--

Not Used

M3

RED

542

Fuse Output - Battery - Type II Fuse

M4

RED

442

Fuse Output - Battery - Type II Fuse

M5

RED

342

Fuse Output - Battery - Type II Fuse

M6

RED

242

Fuse Output - Battery - Type II Fuse

M7

RED

142

Fuse Output - Battery - Type II Fuse

M8

RED

42

Fuse Output - Battery - Type II Fuse

N1-N8

--

--

Not Used

Underhood Fuse-Relay Center Connector (6.5L)


Object Number: 68800  Size: CH

Connector Part Information

    • 12146281
    • Electrical Center (BLK)

Pin

Wire Color

Circuit No.

Function

A1

BLK/WHT

451

Engine Control Module Ground

A3

GRY

120

Fuel Pump Motor Feed

A4

BLK

150

Ground

A6

RED

242

Fuse Output - Battery - Type II Fuse

A7-A9

--

--

Not Used

B1

ORN

440

Fuse Output - Battery - Type III Fuse

B2

RED

490

Fuel Pump Relay Feed - Primer

B3

DK GRN/WHT

465

Fuel Pump Relay Feed (Coil)

B4

PPL

6

Starter Solenoid Feed

B5

--

--

Not Used

B6

YEL

1737

Transmission Mounted Neutral Safety Switch Output

B7-B9

--

--

Not Used

C1

DK GRN/WHT

459

A/C Compressor Control Relay Output (Coil)

C3

ORN

1240

Fuse Output - Battery - Type III Fuse

C4-C6

--

--

Not Used

D1

DK GRN

59

A/C Compressor Clutch Solenoid Feed

D2

--

--

Not Used

D3

PNK

639

Fuse Output - IGN 1 - Type III Fuse

D4-D6

--

--

Not Used

D7

BLK

28

Horn Relay Output (Coil)

D9

ORN

740

Fuse Output - Battery - Type III Fuse

E7

DK GRN

29

Horn Feed

E8

--

--

Not Used

E9

ORN

740

Fuse Output - Battery - Type III Fuse

F1-F3

--

--

Not Used

F5

PNK

3

IGN Switch Output (IGN 1)

F7-G4

--

--

Not Used

G6

PNK

339

Fuse Output - IGN 1 - Type III Fuse

G8

PNK

639

Fuse Output - IGN 1 - Type III Fuse

G10

--

--

Not Used

G12

ORN

440

Fuse Output - Battery - Type III Fuse

H1-J10

--

--

Not Used

J12

ORN

740

Fuse Output - Battery - Type III Fuse

K1

PPL

680

Brake Warning Indicator Lamp Output

K3

DK GRN

59/59

A/C Compressor Clutch Solenoid Feed

K5

RED

542

Fuse Output - Battery - Type II Fuse

K7

PNK

3

IGN Switch Output (IGN 1)

K9

--

--

Not Used

K11

RED

2

Fuse Output - Battery - Type I Fuse

L2

TAN/WHT

33

Brake Warning Indicator Lamp Output

L4

BLK

150

Ground

L6

RED

1542

Fuse Output - Battery - Type II Fuse

L8

PNK

539

Fuse Output - IGN 1 - Type II Fuse

L10

--

--

Not Used

L12

ORN

1240

Fuse Output - Battery - Type III Fuse

M1-M2

--

--

Not Used

M3

RED

542

Fuse Output - Battery - Type II Fuse

M4

RED

442

Fuse Output - Battery - Type II Fuse

M5

RED

342

Fuse Output - Battery - Type II Fuse

M6

RED

242

Fuse Output - Battery - Type II Fuse

M7

RED

142

Fuse Output - Battery - Type II Fuse

M8

RED

42

Fuse Output - Battery - Type II Fuse

N1-N8

--

--

Not Used

Underhood Fuse-Relay Center Connector (7.4L)


Object Number: 68800  Size: CH

Connector Part Information

    • 12146281
    • Electrical Center (BLK)

Pin

Wire Color

Circuit No.

Function

A1

BLK/WHT

451

Engine Control Module Ground

A3

GRY

120

Fuel Pump Motor Feed

A4

BLK

150

Ground

A6

RED

242

Fuse Output - Battery - Type II Fuse

A7-A9

--

--

Not Used

B1

ORN

440

Fuse Output - Battery - Type III Fuse

B2

RED

490

Fuel Pump Relay Feed - Primer

B3

DK GRN/WHT

465

Fuel Pump Relay Feed (Coil)

B4

PPL

6

Starter Solenoid Feed

B5

--

--

Not Used

B6

YEL

1737

Transmission Mounted Neutral Safety Switch Output

B7-B9

--

--

Not Used

C1

DK GRN/WHT

459

A/C Compressor Control Relay Output (Coil)

C3

ORN

1240

Fuse Output - Battery - Type III Fuse

C4

BRN

436

Air Injection Reaction Pump Motor Relay Output (Coil)

C6

RED

78

Air Injection Reaction Pump Relay Output

D1

DK GRN

59

A/C Compressor Clutch Solenoid Feed

D2

--

--

Not Used

D3

PNK

639

Fuse Output - IGN 1 - Type III Fuse

D4

PNK

539

Fuse Output - IGN 1 - Type III Fuse

D5

--

--

Not Used

D6

PNK

539

Fuse Output - IGN 1 - Type III Fuse

D7

BLK

28

Horn Relay Output (Coil)

D9

ORN

740

Fuse Output - Battery - Type III Fuse

E7

DK GRN

29

Horn Feed

E8

--

--

Not Used

E9

ORN

740

Fuse Output - Battery - Type III Fuse

F1-G6

--

--

Not Used

G8

PNK

639

Fuse Output - IGN 1 - Type III Fuse

G10

--

--

Not Used

G12

ORN

440

Fuse Output - Battery - Type III Fuse

H1-J6

--

--

Not Used

J8

PNK

439

Fuse Output - IGN 1 - Type III Fuse

J10

--

--

Not Used

J12

ORN

740

Fuse Output - Battery - Type III Fuse

K1

TAN/WHT

33

Brake Warning Indicator Lamp Output

K3

DK GRN

59/59

A/C Compressor Clutch Solenoid Feed

K5

RED

542

Fuse Output - Battery - Type II Fuse

K7

PNK

3

IGN Switch Output (IGN 1)

K9

--

--

Not Used

K11

RED

2

Fuse Output - Battery - Type I Fuse

L2

TAN/WHT

33

Brake Warning Indicator Lamp Output

L4

BLK

150

Ground

L6

RED

1542

Fuse Output - Battery - Type II Fuse

L8

PNK

539

Fuse Output - IGN 1 - Type II Fuse

L10

--

--

Not Used

L12

ORN

1240

Fuse Output - Battery - Type III Fuse

M1-M2

--

--

Not Used

M3

RED

542

Fuse Output - Battery - Type II Fuse

M4

RED

442

Fuse Output - Battery - Type II Fuse

M5

RED

342

Fuse Output - Battery - Type II Fuse

M6

RED

242

Fuse Output - Battery - Type II Fuse

M7

RED

142

Fuse Output - Battery - Type II Fuse

M8

RED

42

Fuse Output - Battery - Type II Fuse

N1-N8

--

--

Not Used

Underhood Fuse - Relay Center Connector (Export)


Object Number: 68800  Size: CH

Connector Part Information

    • 12146281
    • ELEC CTR U/H (BLK)

Pin

Wire Color

Circuit No.

Function

A1

BLK/WHT

451

Engine Control Module Ground

A3

GRY

120

Fuel Pump Motor Feed

A4

BLK

150

Ground

A6

RED

242

Fuse Output - Battery - Type II Fuse

A7

BLK/WHT

451

Ground

A9

LT GRN

867

Antilock Brake System (ABS) Failure Indicator Lamp Output (Diesel)

A9

LT GRN/LT GRN

867/867

ABS Failure Indicator Lamp Output (Gas)

B1

ORN

440

Fuse Output - Battery - Type III Fuse

B2

RED

490

Fuel Pump Relay Feed - Primer

B3

DK GRN/WHT

465

Fuel Pump Relay Feed (Coil)

B4

PPL

6

Starter Sol Feed

B5

--

--

Not Used

B6

YEL

YEL

Trans Mounted Neutral Safety Switch Output

B7

--

--

Not Used

B8

BLK

150

Ground

B9

BRN

441

Fuse Output - Ignition - Type III Fuse

B9

BRN/BRN

441/441

Fuse Output - Ignition - Type III Fuse (L35)

C1

DK GRN/WHT

4459

A/C Compressor Control Relay Output (Coil)

C3

ORN

1240

Fuse Output - Battery - Type III Fuse

C4-C6

--

--

Not Used

D1

DK GRN

59

A/C Compressor Clutch Sol Feed

D2

--

--

Not Used

D3

PNK

639

Fuse Output - Ignition 1 - Type III Fuse

D4-D6

--

--

Not Used

D7

DK GRN

28

Horn Relay Output (Coil)

D9

ORN

740

Fuse Output Battery - Type III Fuse

E7

DK GRN

29

Horn Feed

E8

--

--

Not Used

E9

ORN

740

Fuse Output - Battery - Type III Fuse

F1

TAN

12

Low Beam Headlamp Feed

F3

LT GRN

11

High Beam Headlamp Feed

F5

PNK

3

Ignition Switch Output (Ignition 1) (Diesel)

F7-F11

--

--

Not Used

G2

TAN

12

Low Beam Headlamp Feed

G4

LT GRN

11

High Beam Headlamp Feed

G6

PNK

339

Fuse Output - Ignition 1 - Type III Fuse (Diesel)

G8

PNK

639

Fuse Output - Ignition 1 - Type III Fuse

G10

--

--

Not Used

G12

ORN

440

Fuse Output - Battery - Type III Fuse

H1-H11

--

--

Not Used

J2

TAN

12

Low Beam Headlamp Feed

J4

LT GRN

11

High Beam Headlamp Feed

J6

--

--

Not Used

J8

PNK

439

Fuse Output - Ignition 1 - Type III Fuse (Gas)

J10

--

--

Not Used

J12

ORN

740

Fuse Output - Battery - Type III Fuse

K1

TAN/WHT

33

Brake Warning Indicator Lamp Output

K3

DK GRN/DK GRN

59/59

A/C Compressor Clutch Sol Feed

K5

RED

542

Fuse Output - Battery - Type II Fuse

K7

PNK

3

Ignition Switch Output (Ignition 1)

K9

--

--

Not Used

K11

RED

2

Fuse Output - Battery - Type 1 Fuse

L2

TAN/WHT

33

Brake Warning Indicator Lamp Output

L4

BLK

150

Ground

L6

RED

1542

Fuse Output - Battery - Type II Output

L8

PNK

539

Fuse Output - Ignition 1 -Type III Fuse

L8

PNK/PNK

539/539

Fuse Output - Ignition 1 -Type III Fuse (L35)

L10

--

--

Not Used

L12

ORN

1240

Fuse Output - Battery - Type III Fuse

M1-M2

--

--

Not Used

M3

RED

542/542

Fuse Output - Battery - Type II Fuse

M4

RED

442

Fuse Output - Battery - Type II Fuse

M5

RED

342

Fuse Output - Battery - Type II Fuse

M6

RED

242/242

Fuse Output - Battery - Type II Fuse

M7

RED

142

Fuse Output - Battery - Type II Fuse

M8

RED

42

Fuse Output - Battery - Type II Fuse

N1-N8

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Not Used