SPECIALISTS IN WHEELBASE MODIFICATIONS, WIRING HARNESSES, AND TRUCK REPAIRS

Define Engineering

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FAST TURNAROUND

Quick, efficient repairs that minimize downtime and get your vehicle back on the road.

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CERTIFIED TECHNICIANS

Fully certified technicians trained to service all commercial vehicles using latest standards.

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CUSTOM FABRICATIONS

Tailored fabrications enhancing performance, durability, and functionality for trucks, trailers, and custom frames.

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FULLY INSURED

Fully insured with professional indemnity and public liability for complete peace of mind.

DEFINE ENGINEERING

Define Engineering specialises in wheelbase modifications, custom wiring harnesses, and truck repairs, delivering safe, durable, performance-driven solutions. Starting in truck body repairs, we’ve grown into custom truck, trailer, and ute builds, electrical work, and fabrication. With 15+ years’ experience, automated manufacturing, and VASS partnerships, we ensure compliant, precise results built to last.

OUR SERVICES

At Define Engineering, our services are built around precision, compliance, and longterm durability. We custom design in Australia.

WHEELBASE AND CHASSIS MODIFICATIONS

Tailored wheelbase and chassis modifications to improve stability, load capacity, and manoeuvrability for optimal vehicle performance.

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CUSTOM WIRING HARNESS
MANUFACTURING

Custom manufactured wiring harnesses, built locally in Melbourne for reliable performance, clean integration and long term durability.

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AUTOMOTIVE
ELECTRICAL WORK

Complete automotive electrical solutions including wiring, lighting, fit outs, diagnostics, and custom electrical systems for commercial and custom vehicles.

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CUSTOM
FABRICATION

Specialised fabrication and vehicle conversions built to meet heavy duty industry standards and real world demands.

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TRUCK REPAIRS
& MAINTENANCE

Comprehensive truck repair solutions including accident damage, electrical repairs, insurance work and general restoration.

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TOW BAR
INSTALLATION

Tailored wheelbase and chassis modifications to improve stability, load capacity, and manoeuvrability for optimal vehicle performance.

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FEATURED PRODUCTS

We stock and supply trusted truck and automotive components engineered for performance, safety, and long-term reliability in demanding commercial environments.

GET IN TOUCH

Discuss your custom project needs with one of our experts today.

Phone 03 8907 1846
Address Unit 1/7 Lakewood Blvd
Carrum Downs VIC 3201