Put The Motorsport Wiring Tools Down! | Lesson 1 of 5 [WIRING]

It's easy to assume the bulk of your time wiring will be spent on the tools, and this is a trap many fall into when it comes to creating their own custom harness not realizing the importance of accurate planning and preparation.

It's not hard to wire an engine or an entire car, but there is a big difference between a job that 'works' (for now with luck) and one that is far better than anything it came with from factory and can outlast the life of the chassis. That difference starts with planning, and 99% of wiring issues when it comes to damage, bad earths, overloaded wire or connectors etc all come back to poor planning techniques.

With planning being the cheapest part of the process for many, costing only time, it is within everyone's reach to get this right.

Using a Toyota 3UZ V8 powered project for the example, in this step we'll look at the electronic
components that we're using for the project to control the engine, determine their power requirements and current draw, how they need to be connected and what sub harnesses,
if any, will be required. Often this step will be conducted at the same time the electronics package is being selected and this is a sensible workflow since this is the ideal time to ensure that the ECU that you're going to use can actually handle the input and output requirements for your project. This process should start by thoroughly documenting every single input, output and connection that's required for the harness.

You will create accurate documentation for your specific application that includes current draws, inputs and outputs and eventually even the tools that will be required for your specific materials. If you talk to anyone who is struggling with a wiring project or is selling a unused ECU at a loss that doesn't suit them, this will undoubtable be something they have not done.

As well as considering current draw to make sure we spec our connector pin count correctly later on, we take a quick look at our CAN Bus network layout and material, and of course take a step back to consider the project on the whole rather than only zeroing in on the engine to make sure we are being efficient with our future time on the tools and the layout we choose.

This is just 1 of 10 wiring steps and the first of 5 [FREE LESSONS] taken from the Professional Motorsport Wiring course. Now watch lesson 2 where we discuss how to avoid spending hours making your harness only to find it won't fit.

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TIME STAMPS:
0:00 - Planning Gets The BEST Results
1:05 - Documentation
1:30 - Do Your Research: 3UZ Example
2:39 - Consider The Whole Project
3:49 - Alternator Considerations
4:15 - Our Safety: C127 Dash Function
4:39 - Inputs & Outputs List
5:41 - Extra Step
6:14 - Current Draw Considerations
6:56 - Example Draw Calculations
8:22 - Starter Solenoid
8:51 - Why You Do This First
9:26 - CAN Bus Wiring
11:27 - CAN Wire
11:43 - Next Step: Routing
11:51 - Just 1 of 48 Lessons