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Electrical Diagnostics, Repair & Custom Harness Building learning outline.

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Welcome to the Electrical Diagnostics, Repair & Custom Harness Building Learning Outline

I put this page together as a handpicked a collection of resources, designed for beginners and professionals alike, to help us understand, diagnose, repair, and build custom harnesses for our machines.

Whether you’re a curious hobbyist or a seasoned mechanic, I hope this page is a good resource. The page contains affiliate links that support this site at no extra cost to you, and we encourage you to use them to help maintain this resource.

General Topics

  1. The Basics
    • Understanding Ohm’s Law
    • Mastering the Multimeter: A Comprehensive Guide
    • Reading Wiring Diagrams
  2. Diagnostic Techniques
    • How to Conduct a Parasitic Draw Test
    • Mastering Relay Testing
    • Troubleshooting Common Electrical Issues
  3. Building and Repairing
    • Tools of the Trade: Essential Equipment for Wiring and Harness Building
    • Step-by-Step Guide: Building a Custom Harness
    • Effective Repair Techniques: Breathing New Life into Old Wiring
  4. Specialized Knowledge
    • Motorsport Specific Wiring Practices
    • Waterproofing Techniques for Motorsport Wiring
    • Advanced Tools and Techniques for Motorsport Wiring

Please consider supporting us on Patreon and subscribing to our channels for updates. This page will be continually updated with fresh, reliable information, so be sure to bookmark it and check back often!

For the future, I will be expanding these resources to include:

  • A glossary of terms for beginners
  • Case studies or real-world examples of issues and their solutions
  • Video tutorials for common repairs or tests
  • A section for FAQs
  • A community forum or comment section where visitors can ask questions or share their experiences

Matco Coil over Plug Interceptor can be used to diagnose ignition coils.


Parasitic Draw Test