The Power Distribution Box manual, publication KM815055, is the 20-page electrical reference for Kenworth W900, T800, T600 and C500 chassis built after 12/03/01 (excluding the T800 City Cab and Work Cab). It covers the later-generation distribution system built around the Central Electrical Panel and replaces the earlier KM815020 for post-2001 trucks.
What the manual contains — Power Distribution Box
The table of contents lists component location, manufacturing start dates, diagrams, wiring and routing, and a full system description. This Power Distribution Box manual then details the Central Electrical Panel (CEP) fuse layout, CEP circuit identification, and the PD box connector pinout locations, so a technician can trace any protected circuit from its fuse right through to the load it serves.
Adding spare circuits — Power Distribution Box
A large part of the document is devoted to spare circuits and how to add them safely without disturbing the factory wiring. Three documented options are provided:
- Option 1: PD box spare power and ground sockets
- Option 2: spare circuit bullet connectors
- Option 3: the additional spare provision described in the text
Why it matters
Adding an accessory to a modern Kenworth means using the documented spare provisions rather than splicing into a live feed, which can defeat the CEP protection and cause hard-to-find faults. The Power Distribution Box manual defines exactly where those provisions are, how they are protected, and how each connector is pinned, so a field-added circuit stays reliable. The connector pinout locations and the CEP circuit-identification tables are the parts a technician returns to most often, because they turn an unlabelled fuse or socket into a known circuit that can be traced end to end.
Document details manual information
The manual is issued by Kenworth Customer Service as KM815055, dated 03/11/03, in the Electrical section. Its component-location figure and manufacturing start dates help confirm that a given chassis really uses this later system before the wiring is followed. Brand and dealer information is at the Kenworth site. Related prints are in the DiagTechPro manuals library.
Applies to these truck models
This is the manufacturer document shared across 4 model families. It applies to:
- Kenworth C5
- Kenworth T6
- Kenworth T8
- Kenworth W9
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