Connector Location
52
Connector Num ber
25
CONN 1 CONN 2 CONN 3 CONN 4 CONN 5 CONN 6 CONN 7 CONN 8 CONN 9 CONN 10 CONN 11 CONN 12 CONN 13 CONN 14 CONN 15 CONN 16 CONN 17 CONN 18 CONN 19 CONN 20 - VIMS Port CONN 21 - Service Port CONN 22 - Super Comm CONN 23 CONN 24 CONN 25 - VIMS Telemetry CONN 26 CONN 27 CONN 28 CONN 29 CONN 30 CONN 31 CONN 32 CONN 33 CONN 34 CONN 35 CONN 36 CONN 37 CONN 38 CONN 39 CONN 40 CONN 41
2 3 4 5 6
48
30 36 9 42
16 14 12
17
15
Schem atic Location I-16 G-16 E-16 C-16 I-14 H-14 E-14 C-14 I-13 I-12 I-12 H-12 H-12 H-12 H-12 H-12 D-12 C-12 D-11 E-11 F-11 F-11 I-11 I-11 E-7 F-7 F-7 F-7 F-7 G-7 G-7 G-7 E-6 E-6 E-5 H-2 E-2 D-2 H-1 H-1 H-1
785G Off-Highway Truck (Without Aftertreatment) Electrical System RTL1-UP
Volume 1 of 5: Cab
Harness And Wire Electrical Schematic Symbols Symbols T
Pressure Symbol
Level Symbol
Flow Symbol
Circuit Breaker Symbol
Symbols and Definitions Fuse: A component in an electrical circuit that will open the circuit if too much current flows through it.
The connectors show n in this chart are for harness to harness connectors. Connectors that join a harness to a component are generally located at or near the component. See the Component Location Chart.
13
Temperature Symbol
Switch (Normally Open): A switch that will close at a specified point (temp, press, etc.). The circle indicates that the component has screw terminals and a wire can be disconnected from it. Switch (Normally Closed): A switch that will open at a specified point (temp, press, etc.). No circle indicates that the wire cannot be disconnected from the component. Ground (Wired): This indicates that the component is connected to a grounded wire. The grounded wire is fastened to the machine. Ground (Case): This indicates that the component does not have a wire connected to ground. It is grounded by being fastened to the machine.
HEADLINER VIEW
REAR CAB VIEW
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.
T
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. 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. Magnetic Latch Solenoid: A magnetic latch solenoid is an electrical component that is activated by electricity and held latched 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.
47
Harness and Wire Symbols
45 Wire, Cable, or Harness Assembly Identification: Includes Harness Identification Letters and Harness Connector Serialization Codes (see sample).
58 60
Harness Identification Letter(s): (A, B, C, ..., AA, AB, AC, ...)
L-C12 3E-5179
AG-C4 111-7898
44
L-C12 3E-5179
1
Part Number: for Connector Plug
Harness Connector Serialization Code: The "C" stands for "Connector" and the number indicates which connector in the harness (C1, C2, C3, ...).
Part Number: for Connector Receptacle
2
41
Plug
46 39 50
40
Component Location Com ponent
37
ALARM - ACTION BREAKER - BRAKE RETRACT MTR BREAKER - CONDENSER FAN 1 BREAKER - CONDENSER FAN 2 BREAKER - CONDENSER FAN 3 BREAKER - HEADLAMPS BUSSBAR - A BUSSBAR - B CONTROL - CAB AIR TEMP DISPLAY - DIGITAL PAYLOAD (MASTER) NOT SHOWN DISPLAY - INDICATOR GROUND - CAB 1 GROUND - CAB 2 GROUND - CAB 3 GROUND - CAB 4 GROUND - CAB 5 GROUND - CAB 6 LEVER - RETARDER LEVER - TRANSMISSION MOTOR - LH WINDOW (ATCH) MOTOR - RH WINDOW (ATCH) PASS THROUGH - CAB PORT - 12V PWR 1 (ATCH) PORT - 12V PWR 2 (ATCH) PORT - REAR PWR RELAY - MAIN PWR RESISTOR - LH TURN RESISTOR - RH TURN RESISTOR - TERM A RESISTOR - VIMS LOCAL CAN 2
38 59 19 53
33
56 27 28 34 20
51
35 57
32
31 1
FRONT CAB VIEW
23
Schem atic Machine Location Location C-5 1 G-4 2 G-4 3 G-4 4 G-4 5 G-4 6 H-5 7 G-5 8 G-1 9 I-12 10 C-5 11 I-4 12 I-4 13 I-4 14 I-4 15 I-4 16 H-4 17 E-1 18 B-12 19 D-4 20 F-12 21 F-4 22 B-5 23 D-5 24 F-5 25 F-4 26 B-5 27 B-5 28 D-2 29 E-7 30
Com ponent SENSOR - 3 CHANNEL BK PEDAL POSN SENSOR - 4 CHANNEL BK PEDAL POSN SENSOR - HOIST POSITION SENSOR - SECONDARY BRAKE PEDAL POSN SENSOR - THROTTLE SWITCH - A/C ON/OFF SWITCH - ARC INC/DEC SWITCH - ARC ON/OFF SWITCH - ARC/MSC INC/DEC (ATCH) SWITCH - ARC/MSC MODE (ATCH) SWITCH - BACKLIGHT DIMMER SWITCH - BRAKE RETRACT SWITCH - COLUMN SWITCH - CURB VISION LAMPS SWITCH - FOG LIGHT SWITCH - HAZARD SWITCH - HEAD LAMPS SWITCH - HEATED MIRROR (ATCH) SWITCH - HORN SWITCH - KEY SWITCH - LH DOOR SWITCH - LH MAP LAMP SWITCH - LH WINDOW SWITCH - RH DOOR SWITCH - RH MAP LAMP SWITCH - RH WINDOW SWITCH - SEAT BELT SWITCH - STAIRWAY LAMP SWITCH - THROTTLE LOCK/THROTTLE BACKUP SWITCH - WORK LAMPS/REAR SIDE LAMPS
Schem atic Machine Location Location E-1 31 E-1 32 C-12 33 E-1 34 D-1 35 G-1 36 E-11 37 E-11 38 E-12 39 E-12 40 C-1 41 G-1 42 F-1 43 D-1 44 C-1 45 B-1 46 D-1 47 F-1 48 D-1 49 D-12 50 F-5 51 H-1 52 E-4 53 F-5 54 H-1 55 E-4 56 I-11 57 C-1 58 C-12 59 D-1 60
5A Receptacle Pin or Socket Number
1 2
Deutsch connector: Typical representation of a Deutsch connector. The plug contains all sockets and the receptacle contains all pins.
1 2
Sure-Seal connector: Typical representation of a Sure-Seal connector. The plug and receptacle contain both pins and sockets.
Fuse (5 Amps)
9X-1123
Component Part Number
325-AG135 PK-14 Harness identification code: This example indicates wire group 325, wire 135 in harness "AG".
Wire Gauge* Wire Color
*Wire gauge is shown in AWG (American Wire Gauge) but could also be shown in metric denoted with mm
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42 Page,
M0112629 VOL 1 of 5
55
(Dimensions: 56 inches x 35 inches)
M0112629 October 2019