Automotive wiring,
done properly.
Specialist wiring conversions. Custom-built harnesses. Innovative automotive electronics.
Ultimate Conversion Wiring (UCW) specialises in custom automotive wiring, engine conversions and electronic integration, delivering solutions tailored to each customer's vehicle and requirements.
From factory-style replacement engine harnesses to complex engine management conversions, we work closely with our customers to develop practical, reliable, fit-for-purpose solutions.
Our experience extends beyond everyday road vehicles, having worked on a wide variety of projects including award-winning show cars, motorcycles, boats and custom-built vehicles.
Making conversions easier
A major focus of our work is developing products and solutions that make it easier for customers to carry out their own engine and vehicle conversions.
Rather than requiring customers to completely redesign or replace their vehicle's wiring, we develop patch harnesses, plug-in wiring solutions, conversion modules and purpose-built electronic interfaces that simplify the integration of different engines, transmissions and vehicle electronics.
Products such as our VZ electronic accelerator pedal conversion module are examples of this approach — solving compatibility challenges and reducing the amount of custom wiring and modification required.
Our aim is to take the complexity out of vehicle conversions wherever possible, allowing enthusiasts, workshops and professional builders to achieve a cleaner, more straightforward installation.
Pioneering Holden engine conversions
UCW was the first to perform LS1 PCM-to-Holden 5.0L engine harness conversions, bringing modern GM engine management technology to the earlier Holden V8 platform.
Our wiring and conversion experience covers a broad range of Holden and GM engines, including:
- Holden VN–VS3.8L V6, 5.0L and 5.7L V8
- GM Generation III & IVLS1, LS2, L76, L98, LS3, LS7, LS9 and LSA
- GM V6Ecotec, Alloytec and SIDI
ECU programming, diagnostics & software development
Alongside our wiring and conversion work, UCW provides specialist programming, configuration and modification services for engine control modules (ECUs), body control modules (BCMs), instrument clusters, transmission controllers (TCMs) and other vehicle electronic systems.
We use a combination of factory and aftermarket diagnostic and programming equipment, including GM Tech 2, GM DPS (Development Programming System), Hanatech, HP Tuners and EFILive for compatible vehicle applications.
Our capabilities also extend to custom-developed programming and diagnostic software, supporting specialised applications where conventional tools may not provide the functionality required.
- ECU, BCM, TCM and instrument cluster programming and configuration
- Calibration programming and modification
- Custom automotive programming and diagnostic software development
- CAN-bus communication, monitoring and data logging
- GM ALDL communication, monitoring and data logging
- Development and testing of custom electronic modules and vehicle interfaces
By combining hands-on automotive wiring experience with software development and vehicle communication analysis, we can develop solutions for conversions and electronic integration projects that need more than standard off-the-shelf equipment.
Built for your project
Whether you're restoring a classic Holden, completing an LS conversion or building something entirely different, our focus is on delivering wiring and electronic solutions that suit your project.
We innovate,while others imitate.
CONTACT UCW