Easy to Find, Easy to Read, Easy to Use

Commercial truck wiring diagrams aren’t easy to find– they’re even harder to use. Every Original Equipment Manufacturer (OEM) has their own approach to wiring diagrams: different colors, different icons, and different symbols. This is especially frustrating when those wiring diagrams are hidden behind paywalls or bundled into expensive software packages.

But Diesel Repair has a universal standard.

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.

Power Up Your Electrical Repair Service with Diesel Repair

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

Get 30 days free when you book a Diesel Repair demo today.

Join us for a free tour around the Diesel Repair platform and let us show you how our customers save time, money, and eliminate frustration when they can find repair information fast.

Diesel Laptops is a leading innovator in the diesel diagnostics and repair industry. We provide hardware and software tools empowering users to diagnose and repair their equipment any way they choose.


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