— INDUSTRIES | MINING

Mining wiring harnesses built for red dust, heat and hard work

Need a harness to suit your Caterpillar, Hitachi, Komatsu, Sandvik or Epiroc machine, or your mine vehicle fleet? Send us the part number or machine model, and we'll quote you a heavy-duty, Australian-made alternative built and tested in our Brisbane factory.

Get a quote Call 1300 001 942

New to WHA? See how to order

Our harnesses work on mine sites across Australia, Canada, the USA, Papua New Guinea and beyond

Australian Made

Standard IPC/WHMA-A-620

On-site Certified IPC Specialists

Industry WHMA Member

Every harness Individually tested

Manufactured Brisbane, Australia

Harnesses to suit the machines you run

We build OEM alternative and replacement wiring harnesses for surface and underground equipment, including engine, cab and frame harnesses.

Caterpillar

Haul trucks, loaders, dozers and excavators, including the R2900G loader and C15 engine

Hitachi

Excavators and mining machines, including the EX series

Komatsu

Haul trucks, excavators and dozers

Sandvik

Underground drill rigs, loaders and trucks, including the TH663i truck

Epiroc

Drill rigs and underground equipment

Don't see your machine? Send us the part number, a photo or the old harness

WHA isn't affiliated with Caterpillar, Hitachi, Komatsu, Sandvik or Epiroc. Brand names show which machines our harnesses suit. Our harnesses are Australian-made alternatives, not genuine parts.

Engine wiring harness to suit a Caterpillar machine, built in Brisbane

— BUILT FOR THE CONDITIONS

Built for red dust, heat and harsh conditions

Mine sites are hard on wiring. Red dust gets into every connector, engine bays run hot, and constant vibration wears through standard coverings. Most wiring harnesses aren't rated for the temperatures they're exposed to. Ours are.

Heavy mining equipment working on a red dirt mine site

138°C

Fire-retardant yarns

For engine bays and high-heat environments

-40°C to 125°C

Premium copper wire

Built for Queensland summers and Canadian winters alike

Genuine

Connectors you know

Deutsch, Tyco, Amphenol and ITT Cannon

Rugged

Tough coverings

Resistant to weather, abrasion, pests and engine fluids

Every wire printed and every harness labelled, so your team finds faults fast.

Harnesses for every part of the mine

From a single replacement to production runs for a whole fleet.

Underground mining harnesses

Built for heat, moisture and vibration below ground.

Surface mining harnesses

For haul trucks, loaders, excavators and dozers working in dust and heat.

Engine harnesses

Wire and coverings rated for engine bay heat and fluids.

Cab and frame harnesses

Replacements for worn or damaged harnesses throughout the machine.

Cab rewires

Complete cab rewires for drill rigs and loaders.

See the Sandvik cab rewire

Field kits

The parts your crew needs for breakdown repairs, in a rugged case.

See field kits

High Temperature Sleeving for Wiring Harnesses

Custom Wiring Harnesses

Custom M12 Adaptors

OEM Alternative Wiring Harnesses

Small-batch wiring harnesses bagged and labelled in the Brisbane factory

Working on mine sites across Australia and overseas

Every harness is made in our Brisbane factory, so you're not waiting on overseas OEM stock to arrive.

WHA was founded by Aaron Bradshaw, an auto electrician with more than 30 years' experience and a background in mining. We know what fails on site, and we build our harnesses so it doesn't fail again.

Queensland
New South Wales
South Australia
Western Australia
Northern Territory
Papua New Guinea
USA
Canada

Each harness carries a label with its part number, manufacture date and test date. When you need another one, send us the part number and we'll build it to the same specification.

Quality you can check for yourself

Australian Made and owned, manufactured in Brisbane
Built to IPC/WHMA-A-620, the global standard for wiring harnesses
Certified IPC specialists on site at every stage
Every harness individually tested before dispatch
Member of the Wire Harness Manufacturers Association (WHMA)

Read why a certified IPC specialist matters

Finished WHA wiring harness with labelled connectors

Our work

That's unreal, thanks so much for getting these all built so fast for us.

Business Development Manager, Regional Queensland, mining

CAT R2900G Cab Rebuild

Date: 03-Jun-2025

A past project highlight where we completed wiring solutions for a CAT R2900G cab ...
Read more

Sandvik Solo 7-15F Drill Rig Cab Rewire

Date: 23-Dec-2024

Wiring Harnesses Australia now offers complete rewire services and custom harness solutions for Drill ...
Read more

Hitachi EX Series Wiring Harnesses – Built to Withstand Harsh Australian Conditions

Date: 09-Jun-2024

Did you know that we manufacture direct replacement harnesses for Hitachi EX series machines, ...
Read more

Have a drawing or specification?

If you're designing new equipment or need a harness built to a drawing, our team works from your specifications, from one-off prototypes to full production runs.

See custom manufacturing

Common questions

No. We build Australian-made aftermarket harnesses to suit your machines. They're made from heavy-duty materials and tested before dispatch, and you don't wait on overseas stock.

The part number is the fastest way. If you don't have it, send us the machine make and model, a photo of the old harness, or the harness itself.

It depends on the harness, and we give you a firm lead time with your quote. Because we make everything in Brisbane, you skip the wait for overseas shipping.

Our harnesses work in machines across Queensland, New South Wales, South Australia, Western Australia and the Northern Territory, and overseas in Canada, the USA and Papua New Guinea. Wherever your site is, we build your harness in Brisbane and send it to you.

Yes. We build anything from a single replacement harness to production runs for a whole fleet.

Keep your machines running

Send us your part number or machine model, and our team gets back to you with a quote. Call us Monday to Friday, 8am-4pm AEST.