These ProStar wiring diagrams make up the 405-page International electrical circuit diagram section, publication S08339, for LoneStar and ProStar chassis built January 2007 and after. Issued by Navistar, the book is a diagram-only reference: schematic sheets, circuit-number and color codes, and connector composites rather than written repair steps.
Official document details
| Brand | International Trucks (Navistar) |
| Model coverage | LoneStar, ProStar (built 01/15/2007 and after) |
| System / Group | ProStar / Wiring Diagrams (Electrical Circuit Diagrams) |
| Publication no. | S08339 |
| Revision | 02/17/2010 |
| Pages | 405 |
| File size | 5.0 MB |
| Format | |
| Language | English |
What these ProStar wiring diagrams show
- Instructions and charts: abbreviations, acronyms and circuit diagram instructions
- Circuit number identification and color, and the schematic symbol chart
- Lamp bulb chart and relay function and wiring guide
- 12 volt power distribution: battery feed, ignition feed and accessory feed
- Cab and engine J1939 data link diagrams, including sleeper options
- Satellite communication (Qualcomm IMCT), trailer light and trailer socket circuits
- Connector composites with cavity, circuit, gauge, color and terminal part numbers
How to read the diagrams
Every sheet follows the schematic symbol chart and the circuit-number-and-color convention, so a wire such as A14 8RD or N57T 10LTGN can be traced from connector to connector. The connector composites list each cavity, circuit, wire gauge, color and terminal part number, which is what technicians need when repairing or re-pinning a harness. Because the set is diagram-only, it is best used alongside the matching service manual for removal and repair steps.
Applicable truck models
The diagrams apply to International LoneStar and ProStar tractors built from 15 January 2007, with sheets flagged for LoneStar-only or ProStar-only effectivity. Verify options and build date against the vehicle on the official International Trucks website before tracing a circuit. Sheets are grouped by chapter, from power distribution through connector composites, making a specific circuit easy to locate.
Who needs these ProStar wiring diagrams
Truck electricians diagnosing lighting, trailer, ignition or J1939 data link faults use these ProStar wiring diagrams to follow a circuit end to end and identify the right connector cavity. The full PDF is available in the DiagTechPro manuals library, free account required to download.
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