Disclaimer: Our products are under continuous development. Vehicles produced after this publication may have different specifications and repair methods. When this is determined to have a significant bearing on this manual, a new edition of this file will update the changes.
Always check the latest information at the “Wiring Diagrams” location.
Utilization of Body Builder connectors ordered and provided by Mack is strongly recommended as your power, lighting, and ground source for body installation, PTO installation, and operation. Cutting into wiring harnesses is not recommended as it may affect CAN Bus messaging. Cutting into an OEM harness will void the warranty of the harness, should it be incorrectly used to supply power to PTO equipment. Be sure to consult with your local authorized Mack dealer when ordering trucks to ascertain proper connectors are supplied when the vehicle is manufactured.
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