This comprehensive Peterbilt truck 379 Model Family Electrical Schematic Manual provides detailed diagrams and explanations of the electrical systems within the truck. The manual covers all aspects of the electrical system, from the battery and charging system to the lighting, instrumentation, and engine control systems. You'll find detailed schematics for each component and wiring harness, making it easy to troubleshoot problems and perform repairs. Whether you're a seasoned mechanic or a DIY enthusiast, this manual is an invaluable tool for understanding and maintaining the intricate electrical systems of your Peterbilt 379.

The Peterbilt 379 is a legendary heavy-duty truck model that has become an iconic symbol of American trucking. Introduced in 1986, the 379 quickly gained popularity among long-haul truckers for its exceptional performance, durability, and driver comfort. The iconic 379 was a revolutionary design for its time, featuring a spacious and aerodynamic cab, a powerful engine, and a robust chassis designed for demanding hauling tasks. Available with a wide array of engine options, ranging from Cummins and Caterpillar to Detroit Diesel, the 379 offered flexibility for different hauling needs. The 379 also benefited from its advanced suspension system, which provided a smooth ride even on rough roads, contributing to driver comfort and reduced fatigue.

The Peterbilt 379 Electrical Schematic Manual is a comprehensive technical document designed for experienced technicians and mechanics who are tasked with troubleshooting and repairing electrical systems in the 379 model family. This manual provides detailed diagrams and explanations of the electrical components, wiring harnesses, and control systems that make the truck function. The schematic diagrams guide users through the intricate wiring pathways, helping them pinpoint issues and understand the flow of electrical signals. The manual also includes detailed descriptions of the various electrical components, their functions, and troubleshooting procedures. This information is essential for diagnosing electrical malfunctions and carrying out repairs efficiently. The manual is a valuable resource for ensuring the safe and proper operation of the 379, preserving its reliability and longevity.