Disclaimer: Persons who perform further manufacturing operations on (modify) a MACK vehicle are responsible for the vehicle’s continued and/or subsequent compliance with applicable regulations, must ensure that the vehicle as modified by them is safe to operate, and assume any liability related thereto. Mack Trucks, Inc. cannot anticipate all of the possible modifications to a MACK vehicle, know the ultimate configuration of every completed vehicle, and be aware of the intended function, operation and/or use of a completed vehicle. Regardless of assistance provided to subsequent manufacturers (others), Mack Trucks, Inc. is not responsible for modifications made to a MACK vehicle by others, nor the safe assembly and/or operation of any equipment installed on a MACK vehicle by them, nor for injury or damage caused by such modification and/or equipment.
Wiring Diagrams to assist with Electrical Interface
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.
All rights reserved. No part of this publication may be reproduced, stored in retrieval system, or transmitted in any form by any means, electronic, mechanical, photocopying, recording, or otherwise, without written permission of Mack Trucks, Inc
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- Mack Conventional-2022 MODEL YEAR (VECU5)
- VEHICLES BUILT 1/4/2021 AND LATER
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- Mack TE-2022 MODEL YEAR (VECU5)
- VEHICLES BUILT 1/4/2021 AND LATER
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- Mack LR-2022 MODEL YEAR (VECU5)
- VEHICLES BUILT 1/4/2021 AND LATER
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- Mack LR-2022 Model Year (VECU5) NYC CNG Model Year (VECU5) NYC CNG
- VEHICLES BUILT 1/4/2021 AND LATER
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- Mack Conventional-GEN2-US17GHG
- Anthem / AN, Pinnacle / PI, Granite / GR
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- Mack Conventional-GEN2-US17GHG
- Granite Snow Plow Auxiliary Lighting
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- Mack Medium Duty
- MD6 / MD7
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- Mack Conventional
- CXU, CHU, GU
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- Mack Conventional with Natural Gas
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- GU NYC
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- LR Diesel and Natural Gas
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- LR NYC
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- LEU
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- TE and MRU
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- TE and MRU with Natural Gas
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- TE and MRU NYC
- Built 2015 - 2018
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- TE and MRU NYC
- Built 2019
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- NYC Dual Bin
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- LR/MR/TE Preco Overlay Wiring Diagram
- Preco radar interface
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Frequently Asked Questions
What is the minimum RPM I should operate my PTO, so that my vehicle will perform Regeneration during PTO mode?
Regeneration in PTO Mode - when a vehicle is being operated in PTO mode and a diesel particulate filter (DPF) regeneration is commanded, the engine must be run at a speed above the minimum speeds listed in the tables in Body Builder Manual, Section 9, Table of Contents / Regeneration in PTO Mode. The minimum speed setting can be affected by ambient temperature and/or altitude.
On Mack mDRIVE, with PTO engaged while in neutral, and then selecting Drive the PTO stops turning. Why?
Remember that the m DRIVE is an automated manual transmission with a clutch. With the PTO engaged while in neutral, when selecting Drive, the clutch is released, then the transmission shifts into gear. When the driver takes his foot off the brake pedal and presses the throttle pedal the clutch will reengage and the PTO will start to turn again. The transmission will not shift gears and driver is limited to about 6 MPH.
Our customer chassis has an mDRIVE and has a need for moving PTO operation. What PTO is recommended?
Transmission mounted PTO’s are primarily used for stand-still operation, with the gearbox in neutral. However it is possible to engage PTO in vehicle speeds up to 6 MPH. If the vehicle is to have a moving PTO operation, an m DRIVE with a REPTO or FEPTO is recommended.