12 AWG M22759/32 Tefzel Wire for Motorsport Wiring
12 AWG M22759/32 Tefzel wire is commonly used in motorsport, performance automotive, race car and custom wiring harness builds where higher-current wiring needs to be compact, durable, heat resistant and reliable.
12 AWG is a practical choice for higher-current circuits where 14 AWG may not provide enough current capacity or voltage-drop margin. It is commonly used for large pump feeds, fan feeds, PDM sub-feeds, relay-fed circuits, power distribution branches and short high-current automotive wiring circuits.
12Volt Motorsports stocks 12 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 12 AWG Tefzel Wire Used For?
12 AWG Tefzel wire is typically used for higher-current automotive and motorsport wiring circuits. It provides more current capacity and voltage-drop margin than 14 AWG while still offering the compact insulation and harsh-environment performance benefits of M22759/32 Tefzel wire.
Typical uses include large pump feeds, fan feeds, PDM sub-feeds, relay outputs, power distribution branches and short high-current wiring runs. It is not a replacement for main battery cable or starter cable, which require larger cable selected for the actual current draw and run length.
Common 12 AWG Tefzel Wire Applications
| Application |
Suitability |
| Large pump feeds |
Commonly suitable where current draw, run length and voltage drop are confirmed |
| Fan feeds |
May be suitable for some fan circuits depending on steady current and inrush current |
| PDM sub-feeds |
Suitable for smaller sub-feeds where total current and protection are confirmed |
| Relay-fed circuits |
Suitable where relay, fuse, connector and terminal ratings are matched correctly |
| Power distribution branches |
Suitable for branch circuits, not main battery or starter cable |
| Short high-current automotive wiring |
Can be suitable where voltage drop, heat and circuit protection are confirmed |
| Starter motor or main battery cable |
Not suitable. Use proper battery cable sized for the load, cable length and voltage drop |
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.
12 AWG is useful for higher-current motorsport wiring, but the circuit still needs to be checked properly. Long cable runs, high-current pumps, large fans and tightly bundled wiring may require larger wire or battery cable to reduce voltage drop and heat.
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 12 AWG Tefzel Wire?
12 AWG Tefzel wire is commonly used with Raychem DR25 heatshrink, adhesive-lined heatshrink, Deutsch DTP connectors, power terminals, 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 DTP connectors or other suitable high-current connectors may be used where serviceable higher-current motorsport wiring branches are required.
Why Buy 12 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 12 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 12 AWG Tefzel wire is suitable for your wiring project.
Frequently Asked Questions
Where can I buy 12 AWG Tefzel wire in Australia?
12Volt Motorsports stocks 12 AWG M22759/32 Tefzel wire in Australia in common motorsport wiring colours. We are based in Melbourne and ship Australia-wide.
What is 12 AWG Tefzel wire used for?
12 AWG Tefzel wire is commonly used for higher-current motorsport wiring circuits including large pump feeds, fan feeds, PDM sub-feeds, relay-fed circuits, power distribution branches and short high-current wiring runs.
Is 12 AWG Tefzel wire suitable for fuel pumps?
12 AWG can be suitable for many fuel pump circuits, but the correct wire size depends on current draw, cable length, voltage drop, connector rating and circuit protection.
Can I use 12 AWG Tefzel wire for thermofans?
12 AWG may be suitable for some fan circuits, but large thermofans can require larger wire because of steady current draw, inrush current and cable length. Size the circuit based on the actual fan load.
Can I use 12 AWG Tefzel wire for main battery feeds?
No. Main battery feeds and starter circuits require proper battery cable sized for current draw, cable length, voltage drop and protection method.
Do you ship 12 AWG Tefzel wire Australia-wide?
Yes. We ship 12 AWG Tefzel wire to Sydney, Brisbane, Adelaide, Perth, Canberra, Hobart, Darwin and everywhere in between.
