Wiring Diagrams for Commercial Trucks

Finding and navigating commercial truck wiring diagrams can be a daunting task. Each Original Equipment Manufacturer (OEM) employs unique colors, icons, and symbols, making it challenging to interpret these diagrams. Moreover, many diagrams are often inaccessible behind paywalls or locked within costly software suites. We simplify this process by offering easily accessible, user-friendly wiring diagrams, ensuring a seamless experience from discovery to implementation.

Diesel Repair Wiring Diagrams

Wiring Diagrams: Decoded

Our in-house electrical experts have painstakingly combed through every wiring diagram in the Diesel Repair database and made them all clear and consistent so you can actually put them to use… without having to figure them out first. Engine, cab, chassis, ABS, transmission. We’ve made sense of diagrams for every electrical component so you don’t have to.

Everything You Need for Easy Repair

Wiring diagrams cover all aspects of the commercial truck, including the engine, cab, chassis, ABS, transmission, and other related components.

Makes Include:

  • Allison
  • Bendix
  • Blue Bird Bus
  • Caterpillar
  • Cummins
  • Detroit Diesel
  • Dodge, Eaton
  • Ford, Freightliner
  • General Motors
  • GMC
  • Hino International
  • Isuzu, Kenworth
  • Mack, Mitsubishi
  • Paccar, Peterbilt
  • Sprinter
  • Volvo
  • Wabco,
  • Western Star


Diagrams Include:

  • Air Conditioning
  • Anti-Lock Brake System (ABS)
  • Cooling Fan
  • Cruise Control
  • Electronic Suspension
  • Engine Accessories
  • Engine Performance
  • Exterior Lights
  • Headlights
  • Horn
  • Instrument Cluster
  • Interior Lights
  • Pneumatic System
  • Power Distribution
  • Power Door Locks
  • Power Mirrors
  • Power Windows
  • Radio
  • Starting & Charging System
  • Supplemental Restraints
  • Trailer Harness
  • Washer & Wiper System


Easy to Read

Our wiring diagrams have been made easy to read and follow with unique color coding and symbols designed to make every repair more effortless than ever.

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Print and save any color-coded, easy-to-read diagram or repair information for future use so you can get the job done effectively – and efficiently – without having to waste time decoding diagrams.

Find any wiring diagram or component locator you need in seconds on Diesel Repair

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