mack mp8 engine harness | eBay Save mack mp8 engine harness to get e-mail alerts and updates on your eBay Feed. + Items in search results. SPONSORED. Find the right parts for your Mack. NEW Mack 22117667 Engine Compartment Wiring Harness for CHU/CXU/GU Models See more like this. 2013 Mack MP8 Turbo Diesel Engine, 445HP, 175,000 Miles, Warranty. Pre-Owned. Body Builder Wiring Diagrams | Mack Trucks 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.