EPA10 Wiring Harness Ordering
Constellation
Heritage
> 4700 Models
4800 Models

> 4900
> 5700
5900
> 6900

54-018
Western Star Parts
Technical Bulletin

Models
Models
Models
Models

Description of Revisions: This bulletin replaces the version dated
December 2016. The reader is advised to access EZWiring
through PartsPro or DTNA Connect.

General Information
Daimler Trucks North America (DTNA) has changed the way wiring harnesses are assembled for vehicles built
with EPA10 engines. Commodity harnesses are now built by one of DTNAs wiring vendors, and assembled
using vehicle specification data. The harness data is then electronically sent to the vendor. This data includes
information from several vehicle modules, along with pinout information for each of the connectors. The vendor
then takes all of the vehicle specification data for the wiring, and breaks it into individual wiring harness bundles
called "commodities." Only the frontwall, chassis, and engine are currently available in a commodity harness.
For example, on a 4900 with an EPA10 engine, the commodity harness may include wires and kits from all of
the modules listed in Table 1.

Module
152
156
160
276
283
286
28F
35H
70B

Module Listing Example
Number Module Description
ENG-PROT/ALARM/SHDN, WIRING, IND
STARTER CONTROL-MANUAL, DRIVER
DIAGNOSTICS
WIRING-FAN CTRLS, ENG/RADIATOR
WIRING-ENGINE CONTROLS/INDIC
WIRING-ENGINE
WIRING-AFTER TREATMENT
SWITCH/WIRING, BACKUP/REVERSE
WIRING-HVAC, MAIN
Table 1, Module Listing Example

In PartsPro, the bill of materials (BOM) for each of the listed modules shows varying numbers of wires, and
possibly a kit, which makes up only a portion of the commodity harness. For production, the harness vendor
takes the information from the many modules that relate to each of the commodities and puts them together
using a layout diagram. This diagram also has a drawing number listed in PartsPro, beginning with L06-. Prior
to these commodity harnesses, an assembly harness was used.
The assembly harness included most of the wires for each commodity, along with a few overlays for optional
features. The assembly harness was listed in one of the main modules and could be located and ordered using
PartsPro. With the new commodity harness design, there is no longer one part number listed that includes the
majority of wiring making up the main harnesses. Therefore, the parts and service technicians can only find and
order the individual harnesses or kits listed in each of the modules. This makes it very difficult to know all of the
possible modules to look in for each commodity. Even if all of the individual wires and kits could be found, there
is currently no way to order them as a complete assembly through PartsPro and Paragon.

Ordering an Assembled Commodity Harness using EZWiring
1. Open the EZWiring application, either in PartsPro or AccessFreightliner. See Fig. 1 and Fig. 2.

Western Star Parts Technical Bulletin, November 2018

Page 1

54-018

EPA10 Wiring Harness Ordering

Western Star Parts
Technical Bulletin

Constellation
Heritage
> 4700 Models
4800 Models

> 4900
> 5700
5900
> 6900

06/12/2014

06/12/2014

Models
Models
Models
Models

f120315

Fig. 2, EZWiring Application in AccessFreightliner

f120312

Fig. 1, EZWiring Application in PartsPro

2. Enter the vehicle serial number.
3. Select "Commodity Harnesses" under the System Options dropdown menu, then press "View." See Fig. 3.

1

2

3

4
06/12/2014

1. Serial Number
2. System Options Drop
Down Menu

f120313

3. View Button
4. Engine Harness

Fig. 3, EZWiring Vehicle Information Screen

4. Enter the part number (Sxx-xxxxx-xxx) exactly as it appears on the Commodity Harnesses Report. See Fig.
4. The part number can be ordered through Paragon

Page 2

Western Star Parts Technical Bulletin, November 2018

54-018

EPA10 Wiring Harness Ordering
Constellation
Heritage
> 4700 Models
4800 Models

> 4900
> 5700
5900
> 6900

Western Star Parts
Technical Bulletin

Models
Models
Models
Models

06/12/2014

f120314

Fig. 4, Commodity Harness Report

06/12/2014

f120316

Fig. 5, Harness Under Review Dialog Box

IMPORTANT: Part numbers received from Customer Service with a format of FTL Sxx xxxxx xxx will
be replaced by a new format Sxx-xxxxx-xxx. Currently, both part number formats are still in use. If a
FTL Sxx xxxxx xxx part number is provided, it is the part number to order in Paragon unless it is
superseded. DO NOT change the format of the FTL Sxx-xxxxx-xxx part number to match the
Sxx-xxxxx-xxx format. These are not the same parts. For example, harness FTL S80 12345 678 is not
the same as S80-12345-678.

NOTE: A06-type harnesses can still be ordered through the Paragon system. Make sure to use
EZWiring drawing viewer to verify the part. If a connector is drawn with dashed lines, it does not
come with this assembly. The A06- drawings also give connector part number information. The L06drawing, which road maps the various harness legs, can also be viewed in the EZWiring drawing
viewer.
NOTE: If the vehicle is modified, it is recommended to add a global annotation in PartsPro per Parts Technical
Bulletin 00-009.

Western Star Parts Technical Bulletin, November 2018

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