©1994 CaterpillarAll Rights Reserved

Printed in U.S.A.

SENR6183October 1994

315 And 315 L ExcavatorElectrical System

4YM1-UP6YM1-UP

Connectors

Connector No. And Machine

Location

Harness And/Or Components Schematic Location Connectors

Connector No. And Machine Location

Harness And/Or Components Schematic Location

40 Contacts CONN 1*

A - 105-9878 Controller B-7 CONN 12 P - 7Y-8139, S - 7Y-8105

F - 5I-8216 C-6

24 Contacts CONN 2*

A - 105-9878 Controller A-7 CONN 30 E - 111-4712

Monitor E-2

CONN 9 A - 105-9878 B - 116-0139 E-12 CONN 32 C - 5I-8217

Wiper Motor F-2

CONN 8 A - 105-9878 B - 106-0139 F-12 CONN 12 S - 7Y-8105

F - 5I-8216 D-6

CONN 13 A - 105-9878 F - 5I-8216 C-5 CONN 43 P - 7Y-8139

Speaker B-6

CONN 24 A - 105-9878 G - 7Y-3922 D-3 CONN 21 H - 4I-5463

Lower Wiper Switch C-3

CONN 18 A - 105-9878 H - 4I-5463

D-4 CONN 29 R - 7Y-8105 Converter D-6

CONN 17 A - 105-9878 K - 4I-5411

F-5 CONN 16 R - 5I-8376 Speaker B-6

CONN 3 A - 105-9878 L - 105-9902

E-9 CONN 25 A - 105-9878 G - 7Y-3922 D-3

CONN 5 A - 105-9878 L - 105-9902

F-9 CONN 23 A - 105-9878 J - 7Y-3868 F-3

CONN 6 A - 105-9878 L - 105-9902

F-9 CONN 39 B - 105-9877 Refrigerant Low Press Switch B-12

CONN 4 B - 116-0139 L - 105-9902

D-9 CONN 45 B - 105-9877 Travel Alarm B-12

9 Contacts CONN 57 C - 7Y-8139 Radio

C-6 CONN 50 B - 116-0139 Boom Raise Press Switch B-8

7 Contacts CONN 14 A - 105-9878 E - 111-4712

C-5 CONN 49 B - 116-0139 Fuel Level Sensor B-5

CONN 10 A - 105-9878 B - 116-0139

E-12 CONN 51 B - 116-0139 Implement Swing Press Switch B-8

CONN 11 B - 116-0139 Safety Relay

E-9 CONN 53 B - 116-0139 Level Solenoid A-8

CONN 28 C - 5I-8217 F - 5I-8216

E-2 CONN 38 B - 116-0139 M - 105-9880 B-2

CONN 15 A - 105-9878 Air Conditioner Unit E-6

CONN 48 B - 116-0139 ZZ - 5I-8258 A-5

CONN 19 A - 105-9878 H - 4I-5463 D-5

CONN 56 B - 116-0139 Proportional Reducing Valve A-8

CONN 15 A - 105-9878 Heater Unit E-6

CONN 41 B - 116-0139 Refueling Pump A-3

CONN 44 L - 105-9902 Governor Actuator C-7

CONN 34 B - 116-0139 Refueling Pump Switch A-3

CONN 27 G - 7Y-3922 Engine Speed Dial C-2

CONN 42 B - 116-0139 Speed Sensor A-10

CONN 58 A - 105-9878 A - 105-9878 C-7

CONN 52 B - 116-0139 Travel Press Switch C-8

CONN 33 A - 105-9878 Lower Wiper Motor F-2

CONN 55 B - 116-0139 Travel Speed Solenoid A-8

* = Connector is located at the component. D = Connector in relay box.A = Connector at the bottom of the cab. E = Connector on main control valve.B = Connector in right console. F = Connector near pilot oil manifold.C = Connector in left console.

Harness Connector Location Chart

10 Contacts

6 Contacts

5 Contacts

4 Contacts

4 Contacts

3 Contacts

2 Contacts

Connectors

Connector No. And Machine Location

Harness And/Or Components Schematic Location Connectors

Connector No. And Machine Location

Harness And/Or Components Schematic Location

CONN 54 B - 116-0139 Trenching Solenoid A-8 2 Contacts CONN 20 J - 7Y-3868

Horn Switch F-2

CONN 31 E - 111-4712 Alarm Fault D-2 CONN 26 G - 7Y-3922

Low Idle Switch D-3

CONN 35 F - 5I-8216 D - 7Y-8245 F-1 CONN 46 B - 116-0139

V - 116-0140 A-10

CONN 22 H - 4I-5463 Lower Washer Switch B-3

CONN 7 S - 7Y-8105 Converter D-6

CONN 37 B - 116-0139 Air Conditioner Clutch Solenoid B-10

CONN 36 F - 5I-8216 D - 7Y-8245 E-1

CONN 59 A - 105-9878, U - 106-0027 T - 106-0026 E-5

CONN 60 T - 106-0026 Radio Control Switch E-4

Three

NOTE: Each of CONN3, 5, 6, 8 and 9 located in area D has 10 poles with different number of plugs, as shown below. The following chart will help you to identify them.

Two

Two

No

One

Harness Connector Location Chart - Continued

2 Contacts

Bullet Terminal

Connector No. In Area D

CONN 5

CONN 6

CONN 3

CONN 8

CONN 9

Plug No.

Machine Location Components Schematic

LocationMachine Location Components Schematic

Location11D Actuator - Governor C-7 9D Relay - Safety E-93A Alarm - Fault D-2 21 Relay - Starter A-102 Alarm - Travel B-12 7D Relay - Washer E-83 Alternator B-10 7D Relay- Wiper E-84 Antenna C-6, D-6 1C Resistor - Backup F-55 Battery D-12 1F Sender - Hydraulic Oil Temperature B-8

1D Block - Terminal D-9 22 Sensor - Engine Coolant Temperature B-104D Breaker D-9 23 Sensor - Fuel Level B-510D Controller A-7 24 Sensor - Speed A-107 Converter D-6 25 Solenoid - Air Conditioner Compress Clutch B-10

3B Dial - Engine Speed C-2 26 Solenoid - Engine Shutdown B-106D Fuse - Block F-7, 8, 9 5F Solenoid - Level A-88 Heater - Air (Glow Plug) A-12 3F Solenoid - Travel Speed A-89 Horn A-2, B-2 2F Solenoid - Trenching A-810 Lamp-Boom A-1, B-1 27 Speaker B-611 Lamp - Cab E-1, F-1 3E Switch - Boom Raise Press B-812 Lamp - Chassis A-2 5D Switch - Disconnect D-913 Lamp - Dome C-6 28 Switch - Engine Oil Press B-101A Lighter - Cigar D-3 4B Switch - Governor Backup C-52A Meter - Service E-2 3C Switch - Horn F-24A Monitor E-2 1E Switch - Implement Swing Press B-814 Motor - Lower Washer C-12 2B Switch - Low Idle D-315 Motor - Lower Wiper F-2 6B Switch - Lower Washer B-316 Motor - Starter A-10 7B Switch - Lower Wiper C-317 Motor - Washer C-12 29 Switch - Neutral Start F-218 Motor - Wiper F-2 2C Switch - Pump Backup F-419 Pump - Refueling A-3 4C Switch - Radio Control E-420 Radio C-6 30 Switch - Refrigerant Low Press B-127D Relay - Boom Lamp E-8 31 Switch - Refueling A-57D Relay - Chassis/Cab Lamp E-8 32 Switch - Refueling Pump A-32D Relay - Engine Shutdown D-7 5B Switch - Speed Change B-48D Relay - Heater D-8 1B Switch - Starter C-27D Relay - Horn E-7 2E Switch - Travel Press C-83D Relay - Main D-7 33 Unit - Air Conditioner E-67D Relay - Refueling Pump E-7 34 Unit - Heater E-6

A = Component at the bottom of the cab. 4F Valve - Proportional Reducing A-8B = Component in right console.C = Component in left console.D = Component in relay box.E = Component on main control valve.F = Component near pilot oil manifold.

Component Location Chart

A1

2

3

45 7

8

9

10

11

12

13

14

15

16

3

4

5

8

9 10

11

12

14

1513

16

B

CD

E

17

17 18

19

20

21

22

23

24

25

26

27

28

29

30

3132

33342

F

11

27

10917

1819 20

21

22

2324

26

27

28

29

A

1

2

3

4

5

7

8910

11

121314

15

16

3

4

5

68

9

10

11

1214 15

13

16

B

C

DE

1

7

17

18

19

20

21

22

23

24

2526

27

2829

3031

3233 342

F17

18

19 20

21

22

23

24

25

26

27

Machine Harness Connector and Component Locations

3150072

1

2

3 4

56

2

1

4

3

3

4

56

43

1

2

12

7

AREA A

AREA B

3110084

3110083

1

2

3

4

5

6

78

9

10

54

31

3

4

5

6

8

9

11

1

4

3

10

2

1

2

7

AREA C

AREA D 3150073

3110085

1 2

3 41

32

8

3

4

5

1

31

2

2

3110087 3150070 AREA F AREA E

T

Normally open switch that will close with an increase of a specific condition (temp-press-etc.).

Normally open switch that is closed due to an applied condition, and will open again with a specific decrease in that condition.

Normally closed switch that will open with an increase of a specific condition.

Normally closed switch that is open due to an applied condition, and will close again with a specific decrease in that condition.

The circle indicates that the component has screw terminals and a wire can be disconnected from it.

No circle indicates that the wire cannot be disconnected from the component.

This indicates that the component has a wire connected to it that is connected to ground.

This indicates that the component does not have a wire connected to ground. It is grounded by being fastened to the machine.

Electrical Schematic Symbols And Definitions

PressureSymbol

TemperatureSymbol

LevelSymbol

FlowSymbol

A AA

2

A AA1

2

325-PK-14C A

325-PK-14

200-BK-14

T

FUSE - A component in an electrical circuit that will open the circuit if too much current flows through it.

REED SWITCH - A switch whose contacts are controlled by a magnet. A magnet closes the contacts of a normally open reed switch; it opens the contacts of a normally closed reed switch.

SENDER - A component that is used with a temperature or pressure gauge. The sender measures the temperature or pressure. Its resistance changes to give an indication to the gauge of the temperature or pressure.

RELAY (Magnetic Switch) - A relay is an electrical component that is activated by electricity. It has a coil that makes an electromagnet when current flows through it. The electromagnet can open or close the switch part of the relay.

CIRCUIT BREAKER (C/B) - A component in an electrical circuit that will open the circuit if too much current flows through it. This does not destroy the circuit breaker and it can be reset to become part of the circuit again.

SOLENOID - A solenoid is an electrical component that is activated by electricity. It has a coil that makes an electromagnet when current flows through it. The electromagnet can open or close a valve or move a piece of metal that can do work.

Harness And Wire Electrical Schematic Symbols

SocketPin

Pin or Socket Number

Wire, Cable, or Harness Assembly Identification

Single Wire Connector

Circuit Number Identification

Wire Gauge

WireColor

Plug Receptacle

9X-1123

Component Part Number

Electrical Schematic Symbols And Definitions

11 12 2

Typical representation of a Sure-Seal connector. The plugand receptacle contain both pins and sockets.

Typical representation of a Deutsch connector. The plug contains all sockets and the receptacle contains all pins.

MAGNETIC LATCH SOLENOID - A magnetic latch solenoid is an electrical component that is activated by electricity and held latch by a permanent magnet. It has two coils (latch and unlatch)that make electromagnet when current flows through them. It also has an internal switch that places the latch coil circuit open at the time the coil latches.

6 D

8 D

4 A

1

1 B

1 C

3 D

1 D

2 D

5 D

2

5 D

7 D

4 D

3

4

2 B

4

10 D

3 B

3 E

2 F

9 D

7

4 F

19

20

21

2 E

3 F

17

18

14

15

1 E

16

11

26

12

13

9

8

10

5 B

8

1 A

1 F

2 A

22

6 B

23

24

25

4 C

5 C

3 C

4 C

27

1 D

2 D

3 D

6 D

8 D

2357101112

101112

A

A

AA

OPTION SOLENOIDCOOLANT LEVEL SWENG OIL LEVEL SW

OPTION SENSOROPTION SW 1OPTION SW 2

OPTION RELAY 3OPTION RELAY 2OPTION RELAY 1

GLOW

RS232C RxDRS232C TxD

PWM OUT -PWM OUT +

WASHER RELAYWIPER MOTOR RELAYCHASSIS LAMP RELAYBOOM LAMP RELAY

GNDGND

+B (24V)

BACKUP SW 1

RS485 -RS485 +BACKUP SW 4

ENG PICKUP SENSOR -

TRAVEL SW

ENG PICKUP SENSOR +

TRAVEL SOLENOIDFUEL LEVEL SENSORCOOLANT SENDER

HYD OIL TEMP SENDER

TRAVEL ALARM

43

1718

242316

312

6

45

1814

922

178

13

220

1917

1510

11

1011

2131

23

288967

1920304036373839292713

LOW IDLE SW

24143525

BACKUP SW 2

151626

OR-18

2

4

5

EPR VALVE +EPR VALVE -

1

3

3433

MONITOR ALARMKEY SW

ATTACHMENT

322212

21

135-BU

BK-18

210-BK

RD-18BK-18

GROUND+12 VOLT

+ BATTERYGROUND

1 2

3

2 1

ATCHCONVERTER 7T-8000

ATCHANTENNA106-0036

3142

S

S

S

S TO RADIO

200-BK

ALTERNATOR (P TERM.)

HARNESS CODE 1HARNESS CODE 2HARNESS CODE 3HARNESS CODE 4

ENG OIL PRESS. SW

HYD OIL LEVEL SW

THROTTLE DIAL S4

F

200-BK103-YL122-BU615-YL

L 105-9902 F-9

ATCH

105-9362 (NOTE C)101-1759 (NOTE D)

ATCHA/C UNIT105-9464 (NOTE C)105-9406 (NOTE D)

103-YL

124-GN-14

200-BK-14

519-PK

2

A

1

34

5

GROUNDS

P

L

R

B

615-YL

306-GN

THROTTLE DIAL S3THROTTLE DIAL S2THROTTLE DIAL S1

IMPLEMENT SW

ENG SHUTDOWN RELAY

TRENCHING SOLENOIDLEVEL FINISH SOLENOID

320-OR

WH/YL

A755-PK

BK

A756-BUA757-GY

WH/GN

A758-BR

105-BR

YL

310-PU

WH/BU

308-YL

309-GY

B786-BU

491-PKA771-PUB737-GNB965-GYB964-YL763-BU495-GN492-GY321-BR405-GY788-YL

185-YL

A762-PUD746-PK

332-BU

877-YL308-YL410-WHA758-BRA757-GYA756-BUA755-PKB786-BUB956-PKB955-YLB789-BRB790-ORB739-WHB740-ORB730-ORB731-WHA768-BU184-BUA983-BU792-OR791-PK786-GN

267-BK266-BK265-BK264-BK235-BK235-BK

877-YL-8

101-RD-4

109-OR-6

327-PK-14616-BU607-PK323-WH365-YL

R

R

L19

ATCH RADIO (NOTE C)

A

B ZZ325-PK

2

322-GY

1

G

506-PU121-YL142-BU-14

U 106-0027 E-5 (NOTE D)T 106-0026 E-5 (NOTE C)

122-BU

RADIO FOR JAPAN

RADIO FOR OUTSIDE JAPAN

T

12

BK-14BK/PK-14

ATCHRADIO SW 7X-6386(NOTE C)

L18 L17

L13

BK

-00

B751-YLA763-GYA761-PU200-BK113-OR

7Y-5465

200-BK

L14

L15

142-BU

200-

BK

200-BK

1

615-YL

234

G

185-YLA768-BUA769-GYB730-ORB731-WH

J

G

763-BU

200-

BK

142-BU

B955-YLB956-PK113-OR

A

201-BK GROUND

152-BU

615-YL615-YL

519-PK124-GN-14

578-BU

+

S

+1-

MOTOR

L16

L12

L15

235-

BK

21

200-

BK

365-YL

122-BU

200-

BK

-14

A

J

PLATFORM

323-WH607-PK

5

1 23 4

ONE TOUCHLOW IDLE SW 6I-5088

615-YL

200-

BK

500-

BR

5

43

1

B

BB

BBBB

AA

VV

L18

B

B

B

B

LB

LA

L

L

200-BK

A76

1-P

U

L21

L22

L16

L16

L21

L22

113-ORA761-PUA763-GYB751-YL

L20

495-GN

200-

BK

120-YL

200-BK307-OR

VV 105-9919 D-9

113-OR

2

PKOR

ATCHLOWER WIPER 4I-5019

A76

3-G

YB

751-

YL

113-

OR

A76

1-P

U

118-

GY

501-

GN

200-

BK

T

B

365-

YL

56

MOTOR

323-

WH

615-YL200-BK

575-

YL

200-

BK

COM

575-YL

578-BU

S1S2S3

152-BU

200-BK

200-BK

BKRD

519-PK

U122-BU

B78

6-B

U20

0-B

K20

0-B

KB

786-

BU

308-

YL

4

613

5

2

310-

PU

B751-YL

877-YL-8

BK-00BK-00

615-

YL79

1-P

K79

2-O

R

152-

BU

607-

PK

105-

BR

321-BR

6 7 8 9 54 321

10

27 89 5410 613

B A

RD-00RD-00

RD

-00

RD

-00

327-PK-14

615-YL

120-YL152-BU118-GY103-YL501-GN500-BR

320-OR124-GN-14129-BU185-YL-14105-BR310-PU

112-PU-14

GG

CC

101-RD-14

112-PU-14112-PU-14

308-YL

B

112-PU-14112-PU-14

321

112-PU-14

112-PU-14

788-YL

615-YL501-GN118-GY500-BR

322-

GY

113-OR120-YL

877-YLA983-BU792-OR

YY 105-9903 D-9XX 4I-5447 D-9

791-PK

HH

BK

A98

3-B

U

V 116-0140 A-10

121-YL506-PU

B

B

B

101-RD-4

WIPERRELAY 7Y-5490

CAB/CHASSISLAMP RELAY 7Y-5490

MOT

101-RD-6

BAT

GS

EE

101-RD-14

ENGSHUTDOWNRELAY 9X-8124

HEATERRELAY085-5353

877-

YL

310-PU

RD

-00

877-YL

327-PK-14

332-BU

B

B

501-GN

HH

1 2

B

GOV ACTR -

3

ENG

5I-7579

501-GN118-GY

EE

506-

PU

578-

BU

792-OR

310-

PU

A76

8-B

U

308-

YL

A76

8-B

U

763-

BU

A762-PU

509-GN

BKRD

410-

WH

200-BK

BRGN

A75

8-B

R

508-PU

512-GN

L11L11L11

S4

L17

511-BR

RD

-00

BU

B

A

UNLESS OTHERWISE SPECIFIED ALL WIRE IS 16 GAGE.

COMPONENTS ARE SHOWN INSTALLED ON A FULLYOPERABLE MACHINE WITH THE KEY AND ENGINE OFF.

THIS SCHEMATIC IS FOR THE 315 EXCAVATOR.

GG 105-9918 D-12FF 105-9917 D-12

200-BK

EE 4I-5429 A-11DD 7Y-3947 D-9CC 105-9916 D-12BB 7Y-3946 D-12AA 105-9915 D-12

CABLE AS.

A

WIRE AS.

L9

L10

P 7Y-8139 C-6 (NOTE E)

L8

500-BR

V

L2

CAB

CHASSIS

A

4

B965-GY

BK

PLATFORM

B

327-PK-14

B

200-

BK

B

YL

ATCHREFUELING PUMP 6C-5572

A A

E

E

D D

ATCHREFUELINGPUMP SW 4I-5389

1 2

L

B

B

AAFF

7Y-3918N 7Y-3994 A-2

D 7Y-8245 F-1

K 4I-5411 E-5J 7Y-3868 F-3H 4I-5463 D-4G 7Y-3922 D-3F 5I-8216 E-2E 111-4712 D-2

C 5I-8217 E-2

B964-YL

GYPUBR

REDWHITEORANGEYELLOWPINK

ABBREV COLOR

BLACKGRAYPURPLEBROWN

DESCRIPTIONSYMBOL

CONNECTOR

ELECTRICAL CONNECTIONTO VEHICLE STRUCTURE

INTERNAL ELECTRICALCONNECTION TO SURFACEOF COMPONENT

BLADE, SPADE, RING,OR SCREW TERMINAL

BKPKYLORWHRD

GNBU

GREENBLUE

CIRCUIT CONNECTED

CIRCUIT NOT CONNECTED

ATCH WIRE, CABLE,COMPONENT

L# CIRCUIT GROUPINGDESIGNATION

IDENT PART NO. LOC

HARNESS AS.

B

B

B

103-YL

B

BF

EF

A

B

B

B

B

120-YL

A768-BU

A75

7-G

Y

L19

F

C

CAB

E

F

F

B 616-BU

616-BU200-BK

122-BU

PK

109-OR-6D746-PK

ATCHBOOM LAMP 5I-8250

BK

A75

6-B

UA

755-

PK

BU

B78

6-B

U

120-YL

RD

B95

6-P

K

RD

B95

5-Y

L

105-BR

BK

BK

142-

BU

-14

307-OR

L2

L4

616-

BU

615-YL

310-PU

VV

607-PK

309-GY

L1

NOTE A : NORMALLY OPEN BEFORE REFRIGERANT CHARGE.

YYVVXXWW

WW

G

A

576-PK

308-YL

CHASSIS

403-GN

309-GY

OFFPREHEATBR

D76

4-G

N

OPERATOR STATION OPERATOR STATION

615-YL

L18

325-PK

MOTOR-

+1

A77

1-P

U

877-YL-8

122-BU

L20

101-RD-14

NOTE B : USE WITH COLD WEATHER.

H

129-

BU

L16

122-BU

501-GN

L23322-GY

325-

PK

365-

YL

5 6

L10

7

2

519-PK

L2

L8

G

L1

118-GY

B 116-0139 E-12

L6

200-BK-6

200-

BK

B78

9-B

RB

790-

OR

A770-PK

A763-GY

6

4

31

5

2

B790-OR

306-GN

S

321-BR

786-GN

L11

121-YL

B73

9-W

HB

740-

OR

L5

B73

0-O

R

60A

7Y-5499

DD

200-

BK

A769-GY

115-PK

ENG GOVACTR106-0080

F

B

322-GY

118-GYA983-BU

ATCH RADIO (NOTE D)

323-

WH

491-PK

365-YL

142-

BU

-14

OPERATOR STATION

1

B73

7-G

N

D74

6-P

K

235-BK

1

616-BU

149-

PU

ATCHCAB LAMP 5I-8250

2

3

4

309-

GY

B73

1-W

H

115-

PK

124-GN-14

WW 4I-5448 D-9

1

308-

YL

C

405-

GY

E

491-

PK

2

113-

OR

109-OR-14

1

184-

BU

B737-GN

B731-WH

B730-OR

200-

BK

B74

0-O

R18

5-Y

LB

789-

BR

4

7

B73

9-W

H

323-WH

DD

786-

GN

P

R

R

332-

BU

A76

9-G

Y

576-

PK

A76

8-B

U

B95

5-Y

L

307-OR

M 105-9880 B-2

500-

BR

ATCHTRAVEL ALARM 3T-1444

332-BU

FUELSENSOR105-9993

142-BU-14

102-8041

HORN SW 6I-5088

B96

4-Y

L

GLOWPLUG

DISCONNECT SW 7N-0718 7N-0719 (NOTE B)

792-OR

HORN 7Y-3919

SERVICEMETER 6T-7337

ATCHCAB LAMP 5I-8250

B79

0-O

R

SAFETYRELAY094-2080

A76

3-G

YB

751-

YL

B96

5-G

Y

D746-PK

D764-GN

B965-GYB964-YLB737-GNA771-PU

A762-PU

788-YL763-BU495-GN

200-

BK

D746-PK

109-OR-14

491-

PK

H

H

309-GY

J

DD

M

N

NM

309-GY

403-GN

BK-00

615-YL

ATCHANTENNA106-0036 50

1-G

N

HYD OILSENDER 4I-5394

109-OR-14

492-

GY

492-GY

576-

PK

152-

BU

235-BK

200-BK-14

575-

YL

200-

BK

491-PK405-GY

152-

BU

B965-GY

5I-8368

200-BK

B95

6-P

K

152-BU

1

A75

8-B

R

2

403-

GN

129-BU

G

200-BK

575-YL

578-

BU

D746-PK

495-

GN

TRAVEL SPEED SOL 4I-5674

109-OR-6

AA

152-

BU

B790-OR

A769-GY

A768-BU

B789-BRB789-BRB789-BRB790-OR

185-YL

152-

BU

B789-BRB789-BR

B739-WHB790-ORB790-ORB740-OR

+ -

575-

YL

576-

PK

A769-GYB730-OR185-YL

B731-WH

200-BK

184-BU

320-OR

763-

BU

ATCH SPEAKER 7Y-5505 (NOTE F)

200-BK

BK-00

101-RD-4

F

E

D

101-RD-14

ATCH SPEAKER 7Y-5505

ATCHAM/FM RADIO 7Y-5437

C

L11

2

492-GY

E

142-BU-14

322-GY

788-

YL

152-BU

A76

2-P

U

235-BK

109-OR-14

A77

1-P

U

ENG

308-YL

102-8041

578-BU

WW

152-BU

A758-BR

308-

YL

103-YL

310-

PU

2

615-

YL

B

L14

L

XX

142-BU

3 4

308-

YL

B73

1-W

HB

730-

OR

B74

0-O

RB

739-

WH

B79

0-O

R

B964-YL

B78

9-B

RB

955-

YL

B95

6-P

KB

786-

BU

A75

5-P

KA

756-

BU

A75

7-G

Y

34

200-

BK

12

365-YL

A768-BU

D746-PK

L1

B73

7-G

NB

964-

YL

200-BK

118-GY

323-WH

330-YL

L

NOTE F : USE WITH AM/FM RADIO.

L

A983-BU

168-GN

L

200-BK

L

184-BU

332-BU

YY

MAINRELAY 3T-0376

8

513-OR

L4

403-GN

MOTOR

L3

112-PU-14

21

330-YL

T

95

6

ATCH BATTERY 3T-5760 (NOTE B)

3

405-GY

L

GOV ACTR +

21

2

L

START RELAY

309-GY

E

BP

RALT

403-GN

2

OPERATOR STATION

A769-GY

1

309-GY

RELAY PANEL

10

200-

BK

21

607-PK

21

A768-BU

P

ALTERNATOR 5I-7982

L

L

A75

8-B

R

616-BU410-

WH

1

112-PU-14

877-YL

L

2

616-BU

B96

5-G

Y

200-BK

3

101-RD-6

4

786-GN

BK-00

519-PK

21

5

A769-GY

6

306-GN

RELAY PANEL

T

SENDER 5I-7578

7 8 9 52 110

578-

BU

MOTOR

200-BK

495-GN

L7

L6

L5

200-

BK

L3

200-

BK L7

L6

L9

L5

PLATFORM

L23L22

ATCHAM RADIO 7Y-5433

L22

112-PU-14

ATCHREFUELING SW 5C-6108

A771-PU

200-BK

122-BU

200-BK

SPEAKER (-)

ILLUMI (+)ACC (+)BACKUPGND

124-GN-14

BK-00

SPEAKER (+)

200-

BK

103-YL

SPEAKER (+)SPEAKER (-)

D764-GN

118-

GY

200-

BK

200-

BK

200-

BK

200-

BK

200-

BK

200-

BK

200-

BK

615-

YL

B95

6-P

K

500-

BR

B95

5-Y

L

501-

GN

102-8042

118-

GY

B

200-BK

112-PU-14

616-BU

129-

BU

113-

OR

D764-GN200-BKA771-PU

410-

WH

A757-GY

575-YL

A756-BU

6

123 45

513-OR

200-BK

112-PU-14

142-BU-14763-BU

306-GNA770-PK

A768-BU

D76

4-G

N

B751-YL

L

185-

YL

R1

A

B

322-GYC

R2

ACCSTART

ON

21

ATCH

105-9465 (NOTE C)105-9408 (NOTE D)

1

200-

BK

1

200-

BK

L7

491-PK

12

109-OR-6

A75

7-G

Y

200-

BK

200-

BK

A75

6-B

U

576-PK

791-PK

7T-8890

ATCH

7T-8890

21

RD-00

121-

YL

519-

PK

513-

OR

1

CHASSIS

265-BK

B78

9-B

RB

739-

WH

B79

0-O

RB

740-

OR

A76

3-G

YB

751-

YL

152-BU576-PK

2

102-8044

12

200-

BK

2

607-PK

200-BK491-PK

763-BU

A769-GY

21

HEATER UNIT 4I-4650 (NOTE C) 4I-1275 (NOTE D)

7N-8008

GOVBACKUP SW 3T-4405

CIGAR LIGHTER 9W-0335

NEUTRALSTART SW 9W-2150

WIPER 4I-6838

FAULT ALARM 3E-6328

MONITOR 7Y-5500

365-YL

ATCHBOOM LAMP 5I-8250

A768-BU

ATCHREFUELINGRELAY 7Y-5490

B964-YL

323-WH365-YL

ATCH LOWERWASHER SW 7X-6387

506-PU

129-BU185-YL-14

615-YL

B965-GY

323-WH

109-OR-6

200-BK

168-GN

321-

BR

L1

L2

103-YL

DOME LAMP096-0721

113-OR

121-YL

152-BU

A761-PU

616-BU

103-YL

120-YL

184-BU

L

607-PK

120-

YL

103-YL114-GN

WW

118-GY

114-GN

D764-GN

TRENCHING SOL 4I-5674

4I-5674

200-BK

200-

BK

112-PU-14

GOV ACTR SENSOR21

BOOM RAISE PRESS. SW

506-PU 500-

BR

B A

118-

GY

6

306-

GN

7

8

9

5

43

21

10

492-

GY

200-

BK

S 7Y-8105 D-6R 5I-8376 C-6 (NOTE F)

ZZ 5I-8258 A-5

5I-7580

309-GY

A76

8-B

U

365-YL

L

325-PK

320-OR

322-GY

A763-GY

105-BR

BOOMLAMPRELAY 7Y-5490

501-

GN

200-

BK

323-WH

200-

BK

L12

200-

BK

10

109-

OR

-6

877-YL-8

306-

GN

B751-YL

L13

A763-GY

A771-PU

500-

BR

B790-OR

YL

200-BK

103-

YL

122-

BU

REFUELING

LOWER WASHER/WIPER

D764-GN

200-BK501-

GN

118-

GY

120-

YL

L3

403-GN

325-PK

403-GN403-GN

6

264-BK

403-

GN

330-YL

7

200-

BK

235-BK

89

5

235-BK

GGBBFF

CCBB

321-

BR

200-

BK

200-

BK

200-

BK

200-BK

607-PK

7

200-BK

200-BK

616-BU322-GY

1

ZZ

410-WH

200-

BK

327-PK-14

BK

-00

200-BK

403-

GN

877-

YL-

832

7-P

K-1

4

4

109-OR-6

200-BK

BK-00

200-BK-6

A761-PU

200-BK

BATTERY 3T-5760

4

D74

6-P

K

330-

YL

A76

2-P

U10

1-R

D-4

788-

YL

309-

GY

405-

GY

405-GY

B737-GN

K

786-GN

103-YL

506-PU

200-

BK

B739-WH

3

NOTE D : USE WITH MODEL X173,X175,X237.

501-

GN

309-GY

113-OR129-BU

101-RD-4

B789-BR

A76

9-G

Y

403-

GN

306-GN

200-

BK

330-YL

200-BK

309-

GY

788-YL

B

BK-00

B

2

BK-00

513-

OR

D746-PK

403-GN

K

578-BU

403-GN

A761-PU

D746-PK

118-

GY

6

109-OR-6

121-YL

B737-GN

513-OR

B740-OR

519-

PK

B955-YL

200-BK

200-BK

B956-PK

RD-00

492-GY

578-

BU

101-RD-8

118-GY

1

501-GN

877-YL-8

500-BR

2

NEGPOS

1

10

9

78

RELAY PANEL

A/C HEATER

10

CIGAR LIGHTERBACKUP

ALTBREAKER 9S-0174

FUSE10A 9W-144215A 9W-144120A 9W-1446

KEY SW

WASHER/WIPERTRAVEL ALARMENG/PUMP CONTDOME LAMPHORN

SOLENOIDMONITORRADIO1

2345

98

7

BOOM LAMP

67

109

54321

HORNRELAY 7Y-5490

149-PU

6

10A10A10A10A

34

101-RD-8

5

10A10A

10A20A

CAB/CHASSIS LAMP10A10A15A

CHASSISLAMP 5I-8251

10A

607-PK

152-

BU

103-

YL

320-

OR

4

124-

GN

-14

129-

BU

YL

185-

YL-

14

BU

105-

BR

113-

OR

3

PU

310-

PU

76

500-BR118-GY

615-YL

501-GN

200-

BK

-6

L19

200-

BK

-6

200-

BK

NOTE C : USE WITH MODEL X174,X176.

B

1

200-

BK

200-BK

307-OR

306-GN

BK

B75

1-Y

LA

763-

GY

200-

BK

D746-PK

5

5

200-

BK

200-BK

1

HORN 7Y-3920

10A

WASHERRELAY 7Y-5490

10A

CHASSIS

200-BK

4321

SIGGND

OR 24V+

500-

BR

NOTE E : USE WITH AM RADIO.

+

200-

BK

M

200-

BK

495-

GN

2

200-BK-6

3

1

200-BK200-BK322-GY322-GY

200-BK322-GY

21616-BU

200-BK 200-BK616-BU

A755-PK

113-

OR

A75

5-P

K

410-

WH

+ -403-GN

+BATTERYDATA -DATA +

307-

OR

A

10A

H

15A10A

200-BK

200-BK

43

SIG

21

9

A

68

10A

113-OR

5

A 105-9878 D-4

PS VALVEBACKUP SW 3T-4405

21

185-YL

2

200-BK

A762-PU

306-GN

200-

BK

L8

320-OR

K

GND

A

P

200-BK

21

12

B

410-WH

GROUND STRAP 7G-1060

8

A

5V+

2

ATCH LOWERWIPER SW 7X-6388

9 8

ENGSHUTDOWN SOL

9 8 7

10

6 4

615-

YL

6

KA

5 4

BACKUPRESISTOR102-8015

1

F

E

D

3 2 1

C

B

A

CONN 23

CONN 20

CONN 33CONN32

CONN 35

CONN 30

CONN 28

CONN 36

CONN 24 CONN 25

CONN 31

CONN 26

CONN 27

CONN 21

CONN 22

CONN 38

CONN 34

CONN 41

ENGINESPEED DIAL

STARTERSWITCH

CONN 57

CONN 16

CONN 43

CONN12

CONN 13

CONN 14

CONN 49

CONN 48

SPEEDCHANGE SW

CONN 17

CONN 59

CONN 59 CONN 60

CONN 18CONN 19

CONN 29

CONN 7

CONN 12

CONN 15

CONN 15

CONN 4

CONN 11

CONN 3

CONN 6

CONN 5

TERMINALBLOCK

CONN 44

CONN 1

CONN 58

CONN 2CONN 56

CONN 53

CONN 54

CONN 55

CONN 50

CONN 51

CONN 52

TRAVEL PRESS SW

IMPLEMENT SWINGPRESS SW

BOOM RAISEPRESS SW

LEVEL SOL

PROPORTIONALREDUCING VALVE

CONTROLLER

CONN 45

CONN 39

CONN 37

CONN 42

CONN 46

ENG OIL PRESS SW

SPEED SENSOR

STARTERMOTOR

A/C COMPR CLUTCH SOL

ENGINECOOLANT TEMP

WASHER MOTOR WASHER MOTOR

REFRIGERANT LOW PRESS SW (NOTE A)

CONN 10

CONN 9

CONN 8

(105-9875 CHG 02)

ALL DASHED LINES ARE ATTACHMENTS.

WIRES THAT HAVE BATTERY VOLTAGE WHEN THE KEY SWITCH IS OFF.

WIRES THAT HAVE BATTERY VOLTAGEWHEN THE KEY SWITCH IS ON.

STARTING CIRCUIT.

GAUGE CIRCUIT.

CONTROLLER CIRCUIT.

WIPER/WASHER CIRCUIT.

HEATER AND AIR CONDITIONER CIRCUIT.

GROUND CIRCUIT.

ENGINE SHUTDOWN CIRCUIT.

HEATER START AID CIRCUIT.

NEGPOS

NEGPOS NEGPOS