GM Service Manual Online
For 1990-2009 cars only
Connector 1: Amplifier C1 (U65)
Connector 2: Amplifier C2 (U65)
Connector 3: Amplifier C3 (U65)
Connector 4: Digital Radio Receiver (U2K)
Connector 5: Radio C1
Connector 6: Radio C2
Connector 7: Speaker - LF
Connector 8: Speaker - LF (Tweeter)
Connector 9: Speaker - LR
Connector 10: Speaker - RF
Connector 11: Speaker - RF (Tweeter)
Connector 12: Speaker - RR
Connector 13: Speaker - Subwoofer (U65)
Connector 14: Steering Wheel Control Switch - Left (Chevrolet w/ K34 w/o UK3)
Connector 15: Steering Wheel Control Switch - Right (Chevrolet w/ K34 w/o UK3)
Connector 16: Steering Wheel Control Switch - Left (Chevrolet w/ K34 and UK3)
Connector 17: Steering Wheel Control Switch - Right (Chevrolet w/ K34 and UK3)
Connector 18: Steering Wheel Control Switch - Left (Pontiac w/ K34/UK3)
Connector 19: Steering Wheel Control Switch - Right (Pontiac w/ K34/UK3)

Amplifier C1 (U65)


Object Number: 1566784  Size: CH

Connector Part Information

  • OEM: 7283-9076-30
  • Service: 15136073
  • Description: 16-Way F (BK)

Amplifier C1 (U65)

Pin

Wire Color

Circuit No.

Function

1

BN

1999

Left Rear Speaker Output (-)

2

TN

1946

Right Rear Speaker Output (-)

3

BN/WH

599

Left Rear Speaker Output (+)

4

D-BU

546

Right Rear Speaker Output (+)

5-7

--

--

Not Used

8

PK

314

Amplifier Enable

9

D-GN

512

Right Front Speaker Output (+)

10

D-GN

1947

Left Front Speaker Output (-)

11

L-GN

1948

Right Front Speaker Output (-)

12

TN

511

Left Front Speaker Output (+)

13-15

--

--

Not Used

16

OG

5748

Amplifier Sense Signal

Amplifier C2 (U65)


Object Number: 888604  Size: CH

Connector Part Information

  • OEM: 7283-5534-60
  • Service: See Catalog
  • Description: 16-Way F 1.5 Series Sealed (GN)

Amplifier C2 (U65)

Pin

Wire Color

Circuit No.

Function

1

YE

116

Left Rear Speaker Output (-)

2

BN

199

Left Rear Speaker Output (+)

3

D-BU

46

Right Rear Speaker Output (+)

4

L-BU

115

Right Rear Speaker Output (-)

5-8

--

--

Not Used

9

D-GN

117

Right Front Speaker Output (-)

10

L-GN

200

Right Front Speaker Output (+)

11

TN

201

Left Front Speaker Output (+)

12

GY

118

Left Front Speaker Output (-)

13-16

--

--

Not Used

Amplifier C3 (U65)


Object Number: 1566782  Size: CH

Connector Part Information

  • OEM: 6098-4787
  • Service: 15134093
  • Description: 8-Way F (WH)

Amplifier C3 (U65)

Pin

Wire Color

Circuit No.

Function

1

L-GN/BK

1794

Subwoofer Speaker Coil 2 Output (-)

2

D-BU/WH

346

Subwoofer Speaker Coil 2 Output (+)

3

D-GN

1795

Subwoofer Speaker Coil 1 Output (+)

4

L-BU/BK

315

Subwoofer Speaker Coil 1 Output (-)

5

BK

850

Ground

6-7

--

--

Not Used

8

RD/WH

2340

Battery Positive Voltage

Digital Radio Receiver (U2K)


Object Number: 850856  Size: CH

Connector Part Information

  • OEM Assembly: 15394150
  • OEM Connector Body: 15411434
  • Service: See Catalog
  • Description: 16-Way F Micro-Pack 64 Series (BK)

Digital Radio Receiver (U2K)

Pin

Wire Color

Circuit No.

Function

1

--

--

Not Used

2

BN/WH

367

Radio Left Audio Signal (+)

3

D-GN/WH

368

Radio Right Audio Signal (+)

5-8

--

--

Not Used

9

BK

750

Ground

10

YE/WH

372

Audio Common

11

GY

813

Drain Wire

12-14

--

--

Not Used

15

PU

1807

Class 2 Serial Data

16

RD/WH

440

Battery Positive Voltage

Radio C1


Object Number: 130690  Size: CH

Connector Part Information

  • OEM: 12110206
  • Service: 12110206
  • Description: 24-Way F Micro-Pack 100 Series (L-BU)

Radio C1

Pin

Wire Color

Circuit No.

Function

A1

GY

118

Left Front Speaker Output (-)

A2

TN

201

Left Front Speaker Output (+)

A3

L-BU

115

Right Rear Speaker Output (-)

A4

D-BU

46

Right Rear Speaker Output (+)

A5

BN

199

Left Rear Speaker Output (+)

A6

YE

116

Left Rear Speaker Output (-)

A7

L-GN

200

Right Front Speaker Output (+)

A8

D-GN

117

Right Front Speaker Output (-)

A9

D-BU

1796

Steering Wheel Controls Signal (UK3)

A10

WH/BK

644

10-Volt Reference (UK3)

A11

--

--

Not Used

A12

BK/WH

151

Ground

B1

RD/WH

2140

Battery Positive Voltage

B2

--

--

Not Used

B3

OG

5748

Mute (U65)

B4-B5

--

--

Not Used

B6

PK

314

Amplifier Enable (U65)

B7-B8

--

--

Not Used

B9

PU

1807

Class 2 Serial Data

B10-B12

--

--

Not Used

Radio C2


Object Number: 73151  Size: CH

Connector Part Information

  • OEM: 12064799
  • Service: 15305996
  • Description: 12-Way F Micro-Pack 100 Series (BK)

Radio C2

Pin

Wire Color

Circuit No.

Function

A-G

--

--

Not Used

H

D-GN/WH

368

Right Audio Signal (+)

J

BN/WH

367

Left Audio Signal (+)

K

YE/WH

372

Audio Common

L

OG/BK

2061

Cellular Telephone Voice Low Reference

M

PK/BK

2062

Cellular Telephone Voice Signal

Speaker - LF


Object Number: 1282875  Size: CH

Connector Part Information

  • OEM: 12186719
  • Service: See Catalog
  • Description: 2-Way F (BK)

Speaker - LF

Pin

Wire Color

Circuit No.

Function

1

GY

118

Left Front Speaker Output (-)

2

TN

201

Left Front Speaker Output (+)

Speaker - LF (Tweeter)


Object Number: 1282877  Size: CH

Connector Part Information

  • OEM: 15305566
  • Service: See Catalog
  • Description: 2-Way F (NA)

Speaker - LF (Tweeter)

Pin

Wire Color

Circuit No.

Function

1

GY

118

Left Front Speaker Output (-)

2

TN

201

Left Front Speaker Output (-)

Speaker - LR


Object Number: 1282875  Size: CH

Connector Part Information

  • OEM: 12186719
  • Service: See Catalog
  • Description: 2-Way F (BK)

Speaker - LR

Pin

Wire Color

Circuit No.

Function

1

YE

116

Left Rear Speaker Output (-)

2

BN

199

Left Rear Speaker Output (+)

Speaker - RF


Object Number: 1282875  Size: CH

Connector Part Information

  • OEM: 12186719
  • Service: See Catalog
  • Description: 2-Way F (BK)

Speaker - RF

Pin

Wire Color

Circuit No.

Function

1

GY

117

Right Front Speaker Output (-)

2

TN

200

Right Front Speaker Output (+)

Speaker - RF (Tweeter)


Object Number: 1282877  Size: CH

Connector Part Information

  • OEM: 15305566
  • Service: See Catalog
  • Description: 2-Way F (NA)

Speaker - RF (Tweeter)

Pin

Wire Color

Circuit No.

Function

1

GY

117

Right Front Speaker Output (-)

2

TN

200

Right Front Speaker Output (+)

Speaker - RR


Object Number: 1282875  Size: CH

Connector Part Information

  • OEM: 12186719
  • Service: See Catalog
  • Description: 2-Way F (BK)

Speaker - RR

Pin

Wire Color

Circuit No.

Function

1

YE

115

Right Rear Speaker Output (-)

2

BN

46

Right Rear Speaker Output (+)

Speaker - Subwoofer (U65)


Object Number: 130637  Size: CH

Connector Part Information

  • OEM: 12064760
  • Service: 12085208
  • Description: 4-Way F Metri-Pack 150 Series (BK)

Speaker - Subwoofer (U65)

Pin

Wire Color

Circuit No.

Function

A

D-BU/WH

346

Subwoofer Speaker Coil 2 Output (+)

B

L-GN/BK

1794

Subwoofer Speaker Coil 2 Output (-)

C

D-GN

1795

Subwoofer Speaker Coil 1 Output (+)

D

L-BU/BK

315

Subwoofer Speaker Coil 1 Output (-)

Steering Wheel Control Switch - Left (Chevrolet w/ K34 w/o UK3)


Object Number: 605502  Size: CH

Connector Part Information

  • OEM: 50-57-9404
  • Service: 12103499
  • Description: 4-Way F (BK)

Steering Wheel Control Switch - Left (Chevrolet w/ K34 w/o UK3)

Pin

Wire Color

Circuit No.

Function

1

BK/WH

151

Ground

2

GY

8

Instrument Panel Lamp Supply Voltage

3

PK

1339

Ignition 1 Voltage

4

GY

397

Cruise Control On Switch Signal

Steering Wheel Control Switch - Right (Chevrolet w/ K34 w/o UK3)


Object Number: 605511  Size: CH

Connector Part Information

  • OEM: 50-57-9405
  • Service: 12103020
  • Description: 5-Way F (BK)

Steering Wheel Control Switch - Right (Chevrolet w/ K34 w/o UK3)

Pin

Wire Color

Circuit No.

Function

1

BK/WH

151

Ground

2

GY

8

Instrument Panel Lamp Supply Voltage

3

GY

397

Cruise Control On Switch Signal

4

GY

1884

Cruise Control Set/Coast/Resume/Accelerate Switch Signal

5

--

--

Not Used

Steering Wheel Control Switch - Left (Chevrolet w/ K34 and UK3)


Object Number: 605507  Size: CH

Connector Part Information

  • OEM: 50-57-9406
  • Service: 12103087
  • Description: 6-Way F (BK)

Steering Wheel Control Switch - Left (Chevrolet w/ K34 and UK3)

Pin

Wire Color

Circuit No.

Function

1

L-GN

1011

Remote Radio Control Signal

2

GY

8

Instrument Panel Lamp Supply Voltage

3

BK/WH

151

Ground

4

D-BU

1796

Steering Wheel Controls Signal

5

PK

1339

Ignition 1 Voltage

6

GY

397

Cruise Control On Switch Signal

Steering Wheel Control Switch - Right (Chevrolet w/ K34 and UK3)


Object Number: 1333392  Size: CH

Connector Part Information

  • OEM: 50-57-9407
  • Service: 15383018
  • Description: 7-Way F (BK)

Steering Wheel Control Switch - Right (Chevrolet w/ K34 and UK3)

Pin

Wire Color

Circuit No.

Function

1

WH/BK

644

10-Volt Reference

2

GY

8

Instrument Panel Lamp Supply Voltage

3

BK/WH

151

Ground

4

D-BU

1796

Steering Wheel Controls Signal

5

L-GN

1011

Remote Radio Control Signal

6

GY

397

Cruise Control On Switch Signal

7

GY

1884

Cruise Control Set/Coast/Resume/Accelerate Switch Signal

Steering Wheel Control Switch - Left (Pontiac w/ K34/UK3)


Object Number: 1333392  Size: CH

Connector Part Information

  • OEM: 50-57-9407
  • Service: 15383018
  • Description: 7-Way F (BK)

Steering Wheel Control Switch - Left (Pontiac w/ K34/UK3)

Pin

Wire Color

Circuit No.

Function

1-2

--

--

Not Used

3

GY

8

Instrument Panel Lamp Supply Voltage

4

PK

1339

Ignition 1 Voltage

5

GY

1884

Cruise Control Set/Coast/Resume/Accelerate Switch Signal

6

--

--

Not Used

7

BK/WH

151

Ground

Steering Wheel Control Switch - Right (Pontiac w/ K34/UK3)


Object Number: 605502  Size: CH

Connector Part Information

  • OEM: 50-57-9404
  • Service: 12103499
  • Description: 4-Way F (BK)

Steering Wheel Control Switch - Right (Pontiac w/ K34/UK3)

Pin

Wire Color

Circuit No.

Function

1

BK/WH

151

Ground

2

WH/BK

644

10-Volt Reference

3

GY

8

Instrument Panel Lamp Supply Voltage

4

D-BU

1796

Steering Wheel Controls Signal