The Meritor transmission wiring diagram, publication P94-1264, is the electrical schematic for the Meritor shift control system as installed on Kenworth trucks. It shows how the shift command harness ties the neutral switch, the range solenoids and the range control solenoid back to the cab, using numbered circuits that run from WIRE0007 through to the firewall ground.
Circuits shown on the print — Meritor transmission wiring
The diagram lists individual wires by colour and number and routes them from the shift command harness, through the transmission power-section harness, to the vendor-supplied transmission harness. Key components called out include the neutral switch (shown in gear), the low-range and high-range shift solenoids, and the range control solenoid located inside the shift knob. Jumper links between the harness sections are identified so a technician knows exactly where the truck wiring meets the supplied harness.
Application details manual information — Meritor transmission wiring
This Meritor transmission wiring diagram carries separate details for different Kenworth models, which is important because the same base print is reused across the range and only one detail applies to a given truck:
- Detail A: for use with C500, T600, T800 and W900
- Detail B: for use with the T2000
- Detail C: for use with T8CC/WC configurations
Using the diagram
Because the print separates the vendor-supplied harness from the Kenworth chassis harness, the Meritor transmission wiring diagram helps a technician decide whether a shift fault lies in the truck wiring or in the supplied transmission harness. The firewall ground stud and the cab-floor pass-through are both shown, so the ground path can be verified quickly rather than assumed.
A practical test order
Start at the neutral switch and confirm the in-gear state, then trace each shift solenoid feed and the range control solenoid before condemning the controller or the knob assembly. Publication P94-1264 covers the Kenworth models listed above. Meritor drivetrain product data is published by the component maker at the Meritor website, while the chassis wiring itself is a Kenworth print. Companion electrical sheets are listed in the DiagTechPro manuals library.
Applies to these truck models
This is the manufacturer document shared across 5 model families. It applies to:
- Kenworth C5
- Kenworth T2000
- Kenworth T6
- Kenworth T8
- Kenworth W9
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