This offline wiring documentation viewer helps you browse Mack Trucks electrical wiring diagrams by year or build date and then narrow down by model family. It is designed for technicians who need quick access to circuit schematics, power distribution, connector information, and system level wiring views during troubleshooting and body builder work.
Summary Highlights
Package contents
Compatibility notes
Coverage depends on the selected year or build date and the chosen model, so availability varies by vehicle and configuration. Use the exact truck build information when possible to avoid mismatched circuits.
For OEM wiring and body builder integration, follow official guidance. Cutting into an OEM harness is not recommended because it may affect CAN bus messaging and warranty conditions.
https://www.macktrucks.com/parts-and-services/support/body-builders/wiring-diagrams/
The viewer menu in this release includes these wiring sections:
Basic usage
Operating systems
Windows 7, Windows 8.1, Windows 10, Windows 11 (x64 recommended). A modern browser is required to open the local HTML viewer.
Minimum system requirements
CPU: Dual core 2.0 GHz or better
RAM: 4 GB minimum, 8 GB recommended
Storage: 3 GB free space for extracted files
Network: Not required for offline use
Rights: Local admin rights may be needed for extraction to protected folders
Disclaimer
Source of Files. All software and resources in this post are collected from public and open sources on the internet. We do not claim authorship or ownership.
File Hosting. This forum does not host files. All links point to third party public cloud storage. We are not responsible for external content.
User Responsibility. Software is provided for educational and evaluation purposes only. You use it at your own risk. Authors of the post and forum administration are not liable for any damage.
Summary Highlights
- Offline HTML based wiring diagram viewer with year or build date selection
- Model selector to filter documentation to the correct truck platform
- System group menu for fast navigation across electrical circuits
- Zoom friendly diagram pages designed for clear reading and printing
- Search for components and use an index to jump to related pages
- Print ready output for workshop use and job documentation
Package contents
- GWTSVGViewMack (folder)
- tables (folder)
- mack.ico
- StartGWTViewerMack.html
Compatibility notes
Coverage depends on the selected year or build date and the chosen model, so availability varies by vehicle and configuration. Use the exact truck build information when possible to avoid mismatched circuits.
For OEM wiring and body builder integration, follow official guidance. Cutting into an OEM harness is not recommended because it may affect CAN bus messaging and warranty conditions.
https://www.macktrucks.com/parts-and-services/support/body-builders/wiring-diagrams/
The viewer menu in this release includes these wiring sections:
- Aftertreatment
- Air Conditioning and Heating
- Anti Lock Brakes and Traction Control
- Body Builder Interface
- CB Posts and Audio Systems
- Chassis Solenoids
- Cigar Lighter and Horns
- Communications
- Cruise Control
- Dash Cluster
- Data Link
- Engine Controls
- Ground Distribution
- Index
- Junction Block, Trailer Cable
- Lighting, Exterior
- Lighting, Interior
- Mirrors, Heated and Power
- Miscellaneous Circuits
- Power Distribution
- Power Door Locks and Power Windows
- Sleeper Circuits
- Starting and Charging
- Transmission Controls
- Vehicle Control Unit
- Windshield Wiper and Washer
Basic usage
- Extract the folder to a local drive with enough free space
- Open StartGWTViewerMack.html in a modern web browser
- Select the year or build date, then select the model family
- Choose a system section and open the required wiring diagram
- Use component search or print tools when needed
Operating systems
Windows 7, Windows 8.1, Windows 10, Windows 11 (x64 recommended). A modern browser is required to open the local HTML viewer.
Minimum system requirements
CPU: Dual core 2.0 GHz or better
RAM: 4 GB minimum, 8 GB recommended
Storage: 3 GB free space for extracted files
Network: Not required for offline use
Rights: Local admin rights may be needed for extraction to protected folders
Disclaimer
Source of Files. All software and resources in this post are collected from public and open sources on the internet. We do not claim authorship or ownership.
File Hosting. This forum does not host files. All links point to third party public cloud storage. We are not responsible for external content.
User Responsibility. Software is provided for educational and evaluation purposes only. You use it at your own risk. Authors of the post and forum administration are not liable for any damage.
