Wiring Fundamentals

The Wiring Fundamentals course will give you the knowledge, skills, and confidence to successfully design and construct an EFI wiring harness, avoiding costly and damaging mistakes.

You will learn the basic electrical principles that govern how an EFI system functions and how to use these principles to design a robust power supply and grounding system, ensuring your EFI system is free of troublesome electrical gremlins, making the tuning process much easier. You will learn about the materials used to build EFI wiring harnesses for different applications, and how to determine which materials are right for your particular project. You will learn about the tools required for harness construction, where to source them without spending a fortune, and how to use these tools to get a professional and reliable result.

The concepts presented in this course are the fundamental core principles of EFI wiring harness design and construction, and are relevant regardless of whether you are wiring a long stroke, big cube LS, a turbocharged 6 cylinder 2JZ, or a high revving naturally aspirated 4 cylinder K20. No matter the EFI project, the information learned in this course will be 100% applicable to you.

This course is theory-based, and contains the knowledge and techniques we believe are essential foundations to anyone interested in building EFI wiring harnesses. Once you’ve completed this course we recommend our soon to be released Practical Wiring Harness Construction course which takes these principles and applies them in real EFI wiring harness construction examples that you can follow along.

What you will learn
  • How a relay works and why you need them
  • How to choose the correct gauge of wire
  • About trigger systems and how to wire them
  • The importance of grounding
  • Wiring ECU inputs and outputs
  • About voltage, current and resistance

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Course Curriculum

  • Introduction 01.23
  • How To Use This Course 01.42
  • Disclaimer 00.56
  • Why is Wiring Important? 01.32
  • Introduction 01.21
  • Voltage 02.31
  • Current 01.36
  • Resistance 02.34
  • Ohm's Law 01.44
  • DC and AC 01.10
  • Inductors 03.03
  • Power 01.54
  • Introduction 00.41
  • Battery and Alternator 02.09
  • ECU, Sensors, Actuators 02.02
  • Wire 04.11
  • Sheathing 04.01
  • Dual Wall Heatshrink 01.45
  • Connectors 05.17
  • Relays 04.01
  • Fuses 01.14
  • Introduction 00.42
  • Further Considerations 01.36
  • What Needs Power, and When 03.08
  • Sizing the Wires 03.44
  • Sizing the Fuses 01.51
  • Circuits 01.35
  • Common Paths 01.20
  • Star Point Earthing 02.04
  • Body Grounds 01.13
  • Sensor Supply 02.00
  • Sensor Ground 01.16
  • Shielded Cable 01.25
  • Sensor Types 00.45
  • Engine Position and Speed 04.49
  • Analogue Voltage 01.45
  • Analogue Temperature 01.52
  • Digital Signal 02.52
  • Knock 01.14
  • Oxygen Sensors 02.24
  • Actuator Types 01.24
  • Fuel Injectors 03.15
  • Ignition Coils 04.42
  • Ignition Coil Types 02.28
  • Simple On / Off Switched 01.47
  • Pulsed Solenoids 03.10
  • CAN Communications 03.46
  • RS232 Communications 01.55
  • Introduction 00.30
  • Multimeter 03.54
  • LED Test Light 01.45
  • Oscilloscope 02.03
  • Introduction 01.25
  • Documentation 04.14
  • Cutting and Stripping 02.10
  • Crimping 15.51
  • Pinning and Depinning 07.10
  • Splicing 09.35
  • Soldering 04.13
  • Bundling and Branching 05.11
  • Sheathing 18.10
  • Labelling 06.42
  • Booting 07.18
  • Testing 04.31
  • Conclusion 01.10
  • Request Certification 00.06

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