TS 1034484 - Finding BOM's / Bill of Materials
in Parts Pro
Vehicles:
This applies to: Cascadia, Columbia, M2, FLD, and Sterling

Model Years:
2008 and older
This document that contains a more organized list of BOM's in Parts Pro along with a diagram of the truck
which shows the BOM for each harness. There are one or two other lists on here but I feel like this one is
a little better laid out and easier to search. This document is a .PDF so you can use Ctrl + F to search the
document if you are not familiar with that function. There is also a highlighter function that you can use to
highlight your most commonly used BOM's.

1

Instructions for Using the Electrical Subsystem Guide
All Freightliner and Sterling vehicles consist of various electrical subsystems. These subsystems are designated by their particular function and consist of a number of modules (Bills
of Material) that contain the applicable electrical diagrams and harnesses for the subsystem. A single circuit may utilize several modules within a subsystem. This informational guide
provides a list of the subsystems and the modules that comprise the subsystems. The following instructions will assist in using this guide.
1) Each Subsystem contains a "Primary Module" which should be checked for electrical
information using PartsPro. Some serial number vehicles based on options or build
date may not contain a particular subsystem "Primary Module". If so, check the
commodity harness modules listed for the Subsystem for wiring and connectors.
2) "Commodity Harness Modules" are modules which contain a harness which provides
wiring for multiple functions. Examples of a commodity harness are the Main Cab
Harness (MCH) found in Module 320 and the Chassis Wiring found in Module 288
3) Wiring for a given subsystem circuit may be contained in both a "Primary Module"
and the "Commodity Harness Modules". The applicable commodity harnesses
will vary by vehicle make / model which is found in this guide

1) Open Parts Pro and at the initial screen (shown)
2) Enter the vehicle serial number,
3) Enter the electrical module from the subsystem list to be searched
4) Parts Pro will open the bill of material for the module number entered.

Figure 1
Pub No. STI - 489
Rev (G) 5/20/2008

4) Illustrations of various vehicle makes / models are provided to show the approximate
location of various commodity harnesses on the respective vehicles
5) Each Subsystem listed contains the "Primary Subsystem Module" and also applicable
commodity harness modules. The commodity harnesses have model designations
(CAS / FLX / FLM / FLD / STL) to assist in determining which modules will contain the
electrical information for a subsystem on a particular model vehicle
6) Lookup of electrical information on PartsPro is simplified when the module (primary or
commodity harness) is known. See Figure 1 and 2 for electrical information lookup after
determing the applicable module from the Subsystem Guide

5) View the desired diagams and harnesses via EZ Wiring,
6) When completed with the module, select the "Vehicle" tab to return to the
initial screen
7) Enter the next module to search from the subsystem list

Figure 2

1

Instructions for Using the Electrical Subsystem Guide

7) For changes / suggestions to the Electrical Subsystem Module List, do the following:
- Call Service Technical Support at (503) 745-7769. Before calling have the vehicle serial
number, subsystem, module information and the specific issue ready to discuss

Figure 5

Figure 3

Figure 4

Figure 6

2

Electrical Subsystem Guide - Subsystem Alphabetical Index / Vehicle Model Abbreviations / Commodity Harness Modules
--- A ---

--- H ---

Page

--- V ---

Page

Antilock Brake System

4

Horn, Audible Warning

5

Vehicle Interface Wiring (Body)

Auxiliary Circulation Fan - Windshield & Sleeper

4

Heater, Ventilation and Air Conditioning (HVAC)

5

Video & Television

Air Dryer

4

Heater and Air Conditioning, Auxiliary (Aux HVAC)

Alternator Volt, Amp & Charging

4

--- L ---

Axle Instrumentation & Warning

4

Audio, Radio / Speakers

Page
7
7
Page

--- W ---

6
Page

Window - Power

7

Lighting, Advertising, Top of Cab

6

Windshield Wiper

7

4

Lighting, Backup Lamp & Alarm

6

Axle, Lift, Pusher & Tag Controls

4

Lighting, Dome, Reading, Fwd Cab

6

Axle Lock, DCDL, Left to Right

4

Lighting, Emergency Device, Visual

6

Axle Lock, Interaxle, Forward to Rear

4

Lighting, Head / Tail Lamp & Daytime Run Lgt (DRL)

6

Lighting, Exterior, Marker

6

CAS

Lighting, Road & Fog Lamp

6

FLX

COLUMIBIA / CENTURY

9

Lighting, Sleeper

6

FLM

ALL BUSINESS CLASS M2

10

Lighting, Spot

6

FLD

FLD112 / FLD120 / CLASSIC / SD

11

Lighting, Road & Fog Lamp

6

STL

ALL STERLING MODELS

12

4

Lighting, Turn Lamp, Alarm

6

4

Lighting, Utility & Work

Axle, Shift, 2-Speed Axle, All Wheel Drive (AWD)

--- B --Battery, Battery Cables & Battery Isolators
Brake System, Service & Park

--- C --Collision Avoidance & Warning (CAWS)
Citizen Band Radio (CB)
Clock, Cab & Sleeper

--- D ---

4
Page
4
4
Page

4
Page

Drivers Information Module & Panel Lamp (DIM)

4

Data Link & Diagnostics (J1587 & J1939)

5

Door Locks, Keyless & Security

5

Data Recording & Logging

--- E ---

5
Page

--- M --Mirror Heat & Power Control
Multiplex Controls & Module (MUX)

--- O --Optional Air, Controls and Wiring
Optional Switch & Wiring

--- P ---

6
Page

COMMODITY HARNESS MODULES

6
6
Page
6
7
Page

Hood Harnesses
28C

WIRING-HOOD (NOT USED)

312

LAMP-HEADLIGHT (STL ONLY)

Forward Chassis Harness
288

WIRING-CHASSIS

Aft Chassis Harness

5

Engine, Automatic Start / Stop System
Engine Brake, Retarder
Engine Block & Oil Pan Heater
Engine, Cruise Control, Speed
Engine Controls, Electronic Engine

5

Engine Fan

5

Seat Power

7

Engine, Grid Heater, Air Intake

5

Suspension (SPNSN)

7

28F

WIRING-AFTER TREATMENT

Engine Shutdown & Warning

5

Secondary Restraint System (SRS)

7

286

WIRING-ENGINE

Engine Air Restriction Indicator

5

Starter - Disable Controls

7

34B

WIRING-TRANSMISSION

Engine RPM Control, Remote

5

Steering Control

Entry, Vehicle Access

--- F ---

Phone

7

5

Power Distribution System

7

28A

WIRING-CHAS,REAR

5

Power Inverters – Alternating Current (AC)

7

301

WIRING-TURN/STOP/TAILLAMPS

5

Power Outlet & Receptacle (Cigar Lighters)

7

5

Power Takeoff Controls

5
Page

7
Page

Tire Inflation

7

Tracking and Guidance System (TGS)

7

Transmission, Auxiliary Controls
Transmission Wiring / Control

7
7

Transmission Warning

7

Trailer Connection Wiring

7

5

Powertrain Harness

Door Harness

5

Ground System

WIRING-CAB,FRTWALL, EXTERIOR

7

5
5
Page

CIRCUIT PROTECTION

321

Tilt System - Cab / Hood Lift

Fuel Heater & Water In Fuel Light

--- G ---

285

Dash Harness

Fifth Wheel Control & Indicators
Fuel Instrumentation & Warning

Frontwall Harness

7
Page

--- T ---

8

CASCADIA

Engine, Ether Starting Aid

--- S ---

Page

VEHICLE MODEL ABBREVIATIONS

320
656

WIRING - MAIN CAB HARNESS (MCH)
SWITCH PANEL & WIRING-DOOR

Cabin Harness
287

WIRING-CAB, OVERHEAD & REAR/SLPR

3

Electrical Subsystem Guide - Primary Modules / Commodity Harness Application (Subsystems A - D)
MODULE
28A
285
287
288
308
320
321
332
333
330
309
331
334
490
493
49A

DESCRIPTION
MODELS
ANTILOCK BRAKE SYSTEM
WIRING-CHAS,REAR
CIRCUIT PROTECTION
STL
WIRING-CAB, OVERHEAD & REAR/SLPR
CHASSIS WIRING
FLM STL
WIRING-SUPPLEMENTAL RECEPTACLE
MAIN CAB HARNESS (MCH)
FLX
STL
WIRING-CAB,FRTWALL, EXTERIOR
FLM
WIRING-ABS,CHASSIS,FWD
WIRING-ABS,CHASSIS,REAR
WIRING - ABS,CAB
< PRIMARY MODULE
< RELATED ELECTRICAL COMPONENT MODULES >
SUPPLEMENTAL TRAILER CABLE
SUPPLEMENTAL RECEPTACLE
ADDITIONAL SUPPL. RECEPTACLE
AIR/HYD VALVE-ANTILOCK
VALVE - ANTILOCK,HYDRAULIC
ABS CONTROL UNIT

MODULE
CAS
CAS
CAS