Motorsports wiring Guide

The website of RB Racing contains about everything you need to know to start with motorsport wiring.
https://www.rbracing-rsr.com/wiring_ecu.html

Choosing the right wiring

For motorsport Tefzel wire is the right choice. It has better heat and wear resistance and is easier to use in a wiring loom due to a smaller diameter than regular automotive wiring.

The wire thickness is measured in AWG. In the table below are some basic and safe AWG sizes for different components

For sensors which send sensitive signals such as the crank, cam and knock sensor it’s recommended to use shielded wiring. These wires contain a conductive sleeve around the signal wire which is connected to a earthing point (battery or ecu depending on the ecu brand).