20 AWG M22759/32 Tefzel Wire for Motorsport Wiring
20 AWG M22759/32 Tefzel wire is commonly used in motorsport, performance automotive, race car and custom wiring harness builds where compact size, low weight, heat resistance, chemical resistance and long-term reliability matter.
20 AWG is a practical step up from 22 AWG where a circuit needs slightly more current capacity while still keeping the harness compact and lightweight. It is commonly used for injector wiring, low-current outputs, sensor power, actuator wiring, relay triggers, PDM outputs and general ECU harness construction.
12Volt Motorsports stocks 20 AWG Tefzel wire in common colours for professional harness construction. We are based in Altona Meadows, Melbourne and ship Tefzel wire Australia-wide.
What is 20 AWG Tefzel Wire Used For?
20 AWG Tefzel wire is commonly used for circuits that need more capacity than 22 AWG but do not require larger power wiring. Typical uses include injector control wiring, sensor power, low-current actuator wiring, solenoids, relay control, PDM outputs, ECU wiring and general motorsport harness branches.
It is not normally used for high-current loads such as fuel pumps, thermofans, main battery feeds or starter circuits. For those circuits, a larger wire size should be selected based on current draw, run length, voltage drop, connector rating and circuit protection.
Common 20 AWG Tefzel Wire Applications
| Application |
Suitability |
| Injector wiring |
Commonly suitable depending on injector type, current draw and circuit protection |
| Sensor power wiring |
Commonly suitable for low-current sensor supply circuits |
| Low-current outputs |
Suitable where current draw and run length are confirmed |
| Small solenoids and actuators |
Often suitable depending on current draw and duty cycle |
| Relay and PDM triggers |
Suitable, though 22 AWG may also be enough for many trigger circuits |
| CAN wiring |
Can be used, though 22 AWG twisted pair is common for many CAN harnesses |
| Fuel pumps or thermofans |
Usually not suitable. Use a larger wire size selected for the actual load |
How Do I Choose the Right Tefzel Wire Size?
Wire size should be selected based on current draw, circuit length, voltage drop, ambient temperature, bundling, connector rating, terminal rating, fuse rating and PDM current limit. Do not choose wire size from current draw alone.
20 AWG is useful for compact motorsport wiring where 22 AWG may be too small but larger power wiring is not required. If the circuit carries significant current, has a long run length or is bundled tightly with other loaded circuits, a larger wire size may be needed.
For a more detailed reference, download our Tefzel wire size, colour and ampacity chart.
Download the Tefzel Wire Size, Colour and Ampacity Chart
What Should I Use With 20 AWG Tefzel Wire?
20 AWG Tefzel wire is commonly used with Raychem DR25 heatshrink, adhesive-lined heatshrink, Deutsch DTM connectors, Deutsch DT connectors, ECU plugs, splice sleeves, labels and harness documentation.
Raychem DR25 is used as the outer harness sleeving. Adhesive-lined heatshrink is used for sealing, splice protection and strain relief. Deutsch DTM and DT connectors are commonly used for sensors, actuators, switches and smaller motorsport wiring branches.
Why Buy 20 AWG Tefzel Wire From 12Volt Motorsports?
12Volt Motorsports is a Melbourne-based motorsport wiring specialist. We do not just sell Tefzel wire, Raychem DR25 and harness materials. We use these products in real custom wiring harness builds, ECU installations, PDM wiring, engine bay wiring and motorsport electrical systems.
If you are unsure whether 20 AWG is the right size for your circuit, contact us before ordering. We can help you choose the right wire size, colour, DR25 size, connector and related harness materials.
Related Motorsport Wiring Products
Need Advice?
Call us on 0458 102 134 or email 12voltmotorsports@gmail.com. We are happy to help you work out whether 20 AWG Tefzel wire is suitable for your wiring project.
Frequently Asked Questions
Where can I buy 20 AWG Tefzel wire in Australia?
12Volt Motorsports stocks 20 AWG M22759/32 Tefzel wire in Australia in common motorsport wiring colours. We are based in Melbourne and ship Australia-wide.
What is 20 AWG Tefzel wire used for?
20 AWG Tefzel wire is commonly used for injector wiring, sensor power wiring, low-current outputs, actuator wiring, relay triggers, PDM outputs, ECU wiring and compact motorsport harness branches.
Is 20 AWG Tefzel wire suitable for injectors?
20 AWG Tefzel wire is commonly used for injector wiring, but the correct size depends on injector type, current draw, run length, connector rating and circuit protection.
Can I use 20 AWG Tefzel wire for CAN wiring?
Yes, 20 AWG can be used for CAN wiring, although 22 AWG twisted pair is commonly used in many motorsport and ECU harnesses. Follow the ECU, dash or device manufacturer’s CAN wiring requirements.
Can I use 20 AWG Tefzel wire for fuel pumps or fans?
Usually no. Fuel pumps and thermofans normally require larger wire sizes selected for current draw, run length, voltage drop, connector rating and protection method.
Do you ship 20 AWG Tefzel wire Australia-wide?
Yes. We ship 20 AWG Tefzel wire to Sydney, Brisbane, Adelaide, Perth, Canberra, Hobart, Darwin and everywhere in between.
