Western Star 4700 4800 4900 6900 Electrical Schematics Manual PDF (EN)

1: Table Of Contents

Western Star Bodybuilder Book: Revision 3.1 1B Table of Contents P. 1B-1 Frequently Asked Electrical Questions 1B-2 Harness/Schematic Location Information 1B-3 47/48/49/69 Main Chassis Harness Schematic 1B-4 Chassis Harness Break Out Locations 1B-5 Chassis Max Complexity Harness Section 1B All LHD EPA 2010 Models: Front Wall Fwd 1B-6 All LHD EPA 2010 Models:

Under Cab Rear 1B-7 4700/4800/4900/6900 Main Cab Schematic 1B-8 4700/4800/4900 LHD PTO Schematic 1B-9 4800/4900 LHD PTO Schematic 1B-10 4800/4900 Remote Fast Idle 1B-11 4800/4900 Remote Start Stop 1B-12 48/49/69 Engine Remote Interface - EOF End of Frame Engine Remote Interface - 148-071 1B-13 End of Frame Engine Remote Interface - 148-035 1B-14 Exterior Cab Body Builder Connections 1B-15 4800/4900/6900 Plow Light Prep 1B-16 4700 10 AMP Switches & In Cab Connections 1B-17 4700 Body Builder Cab Access Port 1B-18 4700 Body Builder Interface 1B-19 Speed Sensor Connections Interface 1B-20 Technical Schematics This guide is to be used as a reference document only.

Please consult your Western Star CAE representative on specific spec’ing needs as the information contained in this document can change without notice.

Стр. 1

Page 2

Western Star Bodybuilder Book: Revision 3.1 1B Frequently Asked Electrical Questions P. 1B-2 Question: How can I tell from the order if the truck has any body builder connections ? Answer: Look at sales code 334 and 353 to determine if supplemental body builder harness options Question: Is a J1939 Protocol available? If so, how can I gain access to it? Answer: With the 2010 model year trucks or newer the J1939 protocol is available via the diagnostic where ordered with your truck. Question: If there is a Body Builder option, what type of interface plug does the option have and where connector located at the lower left hand side of the dash and new nodes can be added at the end resistors.

See Page 1A-10 and 1A- 11 for location and connection details. Question: Is there any factory provisions for remote Stop? Answer: Yes remote Stop is available using Option code 162-018 based on the engine configuration. will it be located? Answer: The 4700 offers blunt cut wires at the BOC with an access plate in the floor for body builder connections see page 1A-13/14 and 1B-18/1 9. The 4800/4900/6900 offer body builder harnesses to the exterior BOC and the End of Frame with std plugs. See page 1B-14 for schematics and details. Question:

Where can I find specific transmission information on the truck order and in the Body builder Availability would need to be determined by the Sales and Application Engineering groups. Question: Is there any factory provisions for remote Start/Stop? Answer: Yes remote Start Stop is available using Option code 157-004 for the 4800/4900 models. Customer supplied harness with 4 position switch is supplied by customer for this option See Page 1B-12 for more details. Question: How do I get remote Engine Speed Control (ECU)? Answer: This option can be requested on new orders via data code 163-008 or 163-009. If these book? Answer:

Truck specific Transmission specifications can be located in the truck order under sales code 342 and schematic information can be found using the sales codes found on page 1B- 4 of this chapter of the body builder book. Question: Can you obtain wiring diagrams for specific options for serial numbers and any information options are not present, remote engine speed control can also be accessed via the JS19 connector located in the engine compartment and is part of the main engine harness A06- 63518. See Pages 1B-13 to 1B-15 for schematic information. Question: Can you get a fast idle interface on the WST? Answer:

Data code 148-035 provides a fast idle switch interface tied to the parking brake See on dealer optionally installed features? Answer: Specific schematic information can be obtained by serial number is available to our dealers on line via PartsPro and EZ wiring. Use page 1B-4 of this chapter to locate the module location information. Question: Does Western Star utilize the (J1939) CAN-bus data protocol? Answer: The Western Star dash gauges and driver display (if equipped) are controlled via the J1587 schematics on Page 1B-11 . Question: Does the 4700 model have the same electrical architecture as the 4800/4900 models? Answer:

The 4700 electrical architecture is the same as other WST models but has different pin data bus. See the star gauge P 1A-6, 1A-7 for more information. Question: Can the day time running lights be deactivated? Answer: The instructions to deactivate the day time running lights are located on page 1A-22. Question: Is there a high amperage option for Plow lights on the 4800/4900/6900 Models? Answer: Yes a plow light package is available using Sales code 329-054 which supplies a separate locations in the front wall. These differences are defined in the pin out charts in chapter 1C dependant on your model and production year. Question:

Can you deactivate the brake override circuit so that the 4-way flashers stay on when the brakes are activated? Answer: The instructions to disable the brake override circuit are located on page 1A-21. Question: I have installed aftermarket LED tail lamps to my vehicle but they are not working properly . Answer: The WST electrical turn signal system requires a minimum amperage load from the tail light junction box mounted to the back wall behind the passenger seat. See details and schematics for this option on page 1B-16. Question: Is there a place I can tie into the tail lights without splicing into the tail light harness? Answer:

Yes some trucks will be equipped with a capped plug at the bac of cab LH rail that is labeled system. When LED lights are used a resistor needs to be added to increase the load to an acceptable level. See Page 1A-21 for installation information. Question: Does WST offer switches that are ignition controlled that are not rated to 20 amps or relay supplemental trailer cable wiring (shown on P 1B-15 ) if the 388 Mod option has ordered. If this option and plug is not in the harness Pins #20,33,44,57 and 71 can be been accessed in the Main Chassis Bulkhead. The pinout details for this plug can be found in page 1C-4 dependant on your model and production year. Question:

I have a unit with a Eaton manual transmission. Where would the body builder locate the controlled? Answer: Yes WST offers a (6) optional switch option for this application with 329-071 see page 1A- 15. Question: If I need to stop the truck from starting under specific conditions is there a way I can do this? Answer: Yes, tying into the Neutral Safety switch circuit (located in the front wall PDM, see page 1A- vehicle speed when installing a salt/sander spreader with a controlled flow rate at different speeds on a manual transmission? Answer:

The best way to do this is by adding a second speed sensor to the rear bearing cover of the 7 ) with a signal controlled relay will stop the truck from starting. the starting schematics can be found in Mod 156 and are specific for each engine Make. transmission. see Page 1B-20.

Стр. 2

Page 3

Western Star Bodybuilder Book: Revision 3.1 1B Harness/Schematic Location Information P. 1B-3 TRANSMISSION Engine and ABS MODULE WIRING FrontWall/Sleeper 34B TRANSFER CASE Main Chassis Harness 376 AUXILIARY TRANSMISSION MODULE EPA 2007 Mega Fuse Location MAIN CAB HARNESS 34C / 352 MODULE EOF LIGHTING MOD 294 MODULE 320 AXLE WIRING INTERLOCK AXLE TEMP MOD 87B MOD 865 FRONTWALL HARNESS MOD 321 ENGINE HARNESS TRAILER WIRING MODULE 286 / 283 PRIMARY TRAILER CBL MOD 296 LIGHTING MAIN CHASSIS ADDITIONAL PRIMARY MOD 303 EXT.

LIGHTS MOD 288 HARNESS MOD 318 / 31J BEACON SUPPLEMENTAL CABLE MOD 308 ADDITIONAL LIGHTS MOD 327 FORWARD CHASSIS & SUPPLEMENTAL MOD 334 SIGNAL 312 / 314 315 / 310 POWER WIRING BATTERY MOD 372 / 885 PTO ALTERNATOR ROUTINGS CABLES MOD 291 EPA 2010 Power Net Distribution Box (PNDB) POWER WIRING MOD 29A MOD 125 JUMPSTART MOD 295 CAB POWER BATT SHUTOFF MOD 293 MOD 926

Стр. 3

Page 5

Western Star Bodybuilder Book: Revision 3.1 1B Chassis Harness Break Out Locations P. 1B-5 All EPA 2010 LHD Models 000 F Chassis Harness Max Complexity Harness 000 E New electrical systems for 2010 will be shown using a Max Complexity harness layout L06-82534. This new diagram system provides all possible connections that are available on one single diagram. This information provides the connector part number and the Sales Code and or Module number that the option and schematic detail can be found. How to use this diagram system 109 Ÿ Use the diagram to locate where on the chassis the connections will be located. Note: Some locations are approximate due to wheelbase differences.

A 001 Z 000 A Ÿ Not all connections shown in the diagram will be on any one specific vehicle. Note: To order new harnesses for service or repair refer to Parts 000 B Bulletin 54-018. 000 C SPLAY 108 BOLT ON 000 D A DROPCAST Rear Frame Front Wall Connections Front Engine Crossmember 068 Front B 108 096 A A 082 A Back of Cab on next page for Harness Breakout Location See diamond indicators BOC Crossmember 082 A 068 A 051 A 039 A 027 A 015 A 000 A

Стр. 5