This PACCAR MX engine harness wiring diagram is the connector reference for the Kenworth installation of the MX engine that meets EPA 2010 emissions rules. Carrying a 2009 PACCAR copyright, the drawing is a proprietary factory print that identifies every sealed connector on the engine harness by description, part number and reference designator, so a plug can be matched exactly before it is ordered or repinned.
Connectors on the harness — PACCAR MX engine
The sheet tabulates the harness connectors, which saves time when a plug is damaged or a pin needs to be moved. Documented connectors on the PACCAR MX engine harness include:
- J114 — AMP Superseal 1.5K series, 2-way sealed (P20-1193-1102G)
- J118 — AMP Superseal 1.5K series, 5-way sealed
- J119 — Packard Metri-Pack 150 series, 2-way sealed
- J124 — Deutsch DT series, 12-way sealed
- J168 — Packard Metri-Pack 280 series, 2-way sealed
- J175 — Deutsch HDP series, 21-way sealed
Mounting hardware manual information — PACCAR MX engine
Beyond connectors, the print also calls out fir-tree cable-tie mounts (Hellermann-Tyton) used to route and secure the harness along the engine. This makes the drawing useful both for electrical diagnosis and for correct harness routing after a repair, so a rebuilt harness sits and clips exactly as the factory intended and does not chafe against hot or moving parts.
Why this reference is used
On an EPA 2010 MX engine, connector identification matters because emissions-related sensors share similar plug families and a mismatched connector is easy to fit by mistake. Naming each connector prevents a mis-pinned repair that could set a fault code or disable a sensor. Used correctly, the PACCAR MX engine harness chart turns a confusing bundle of look-alike plugs into a clearly labelled map.
Document source manual information
The MX engine is a PACCAR product and this print carries PACCAR proprietary notices; corporate and powertrain information is published at the PACCAR corporate site, while the chassis integration is a Kenworth drawing. Related electrical sheets 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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