Hummer H1 (2002+). Manual - part 235

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 Electrical System  12-161

®

05745159

47

3

LB

Left front turn signal

48

914

PP

PCM class 2 communication line to DLC

49

644

YL

Tachometer signal

50

210

DG

Low washer fluid level lamp activation

51

195

YL

Headlight switch feed

52

603

RD

ABS lamp activation

53

719

BR

APP 1 ground

54

793

YL

Low coolant lamp activation

55

794

RD

Low air warning lamp activation

56

41

TN

Brake fluid level sensor feed

57

428

PK

CTIS buzzer activation

58

47

LG

Deflate solenoid activation

59

46

WH

CTIS compressor relay activation

60

725

GY

APP 3 Ground

61

767

BR

Compass mirror temperature signal

62

1

DB

Horn relay activation

63

91

TN

CTIS front inflate solenoid activation

64

37

RD

Batt feed to interior fuse box

65

12

OR

Headlamp high beam feed

66

13

TN

Headlamp low beam feed

67

38

RD

Headlamp switch feed

68

16

LG

Ignition supply to exterior fuse box fuses 2A, 2B, and 3B

69

175

LB

Power window relay feed

70

943

TN

Upper windshield washer pump activation

71

5

DG

Right rear turn signal

72

9

YL

Backup light activation

73

20

RD

Left rear turn signal

74

21

GY

Rear tail lamp feed

75

789

BR

Fuel selector valve control

76

941

TN

Lower windshield washer pump activation 

PIN

CKT

COLOR

CIRCUIT DESCRIPTION

4-1-00

12-162

Electrical System

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®

42 WAY UNDERBODY  LOCATION: LOWER LEFT FOOTWELL NEAR ENGINE

9-S12-015

C2 MALE

PIN 34

PIN 28

PIN 22

PIN 16

PIN 10

PIN 1

PIN 42

PIN 33

PIN 27

PIN 21

PIN 15

PIN 9

9-S12-016

C2 FEMALE

CAV 42

CAV 33

CAV 27

CAV 21

CAV 15

CAV 9

CAV 34

CAV 28

CAV 22

CAV 16

CAV 10

CAV 1

PIN

CKT

COLOR

DESCRIPTION

1

43

DB

Trailer brake activation

2

20

RD

Front parking lamp feed

3

12

OR

Headlamp high beam feed

4

13

TN

Headlamp low beam feed

5

3

LB

Left front turn signal

6

80

WH

Underhood lamp power

7

2

LG

Right front turn signal

8

767

BR

Compass mirror temperature signal

9

49

OR

Battery power to trailer connector

10

996

BR

Left front wheel speed sensor low signal

11

997

BK

Left front wheel speed sensor high signal

12

32

LB

Neutral safety switch feed to start relay

13

33

WH

Neutral safety switch ignition feed

4-1-00

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 Electrical System  12-163

®

05745159

14

17

PP

Light power from dimmer module

15

16

17

18

19

999

BK

Right front wheel speed sensor high signal

20

998

BR

Right front wheel speed sensor low signal

21

22

994

BR

Right rear wheel speed sensor low signal

23

995

BK

Right rear wheel speed sensor high signal

24

41

TN

Parking brake lamp activation

25

21

GY

Rear marker lamp feed

26

27

298

BR

Backup lamp switch feed

28

29

5

DG

Right rear turn signal

30

9

YL

Left rear turn signal

31

992

BR

Left rear wheel speed sensor low signal

32

993

BK

Left rear wheel speed sensor high signal

33

34

35

29

PK

Fuel gauge signal

36

786

RD

Fuel selector valve control

37

789

BR

Fuel selector valve control

38

39

40

962

BR

Trailer tail lamps

41

42

PIN

CKT

COLOR

DESCRIPTION

4-1-00

12-164

Electrical System

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®

56 WAY INSTRUMENT PANEL  LOCATION: BEHIND INSTRUMENT PANEL

C3 MALE

9-S12-050

E

G

F

D

C

B

A

M

P

N

L

K

J

H

1

2

3

4

5

10

9

8

7

6

PIN A1

PIN H6

C3 FEMALE

9-S12-049

E

G

F

D

C

B

A

M

P

N

L

K

J

H

6

7

8

9

10

5

4

3

2

1

CAV H6

CAV A1

PIN

CKT

COLOR

DESCRIPTION

A1

195

YL

Headlight switch feed

A2

54

DG

Dome lamp switch feed

A3

53

DB

Dome lamps feed

B1

38

RD

Headlamp switch feed

B2

15

WH

Headlamp feed to dimmer module

B3

640

OR

CTIS switch ignition feed

B4

46

WH

CTIS compressor indicator lamp activation

C1

450

PK

Seat belt lamp activation

C2

47

LG

Deflate solenoid activation

C3

91

TN

Front inflate solenoid activation

C4

92

GY

Rear inflate solenoid activation

4-1-00