
Bring the wiring back to new.
As these vehicles get older, the original engine harness can become one of the weakest parts of the car. Heat, oil, previous repairs and decades of use can leave wiring brittle, connectors damaged and old harness tape falling apart.
Ultimate Conversion Wiring can supply newly manufactured replacement engine harnesses for a growing range of Holden applications, from early VL, VN, VP, VR and VS models through to LS-powered VZ, VE and VF vehicles, including selected HSV and special-model applications.

New wiring where the old loom has had enough.
Our replacement looms are built from scratch using new automotive wiring, terminals and seals, with a combination of new and carefully selected second-hand plugs where required. The finished harness is protected in convoluted tubing and harness tape in the same style as the original factory loom, giving you a clean, factory-style installation rather than a modified old harness.
Ideal for restorations, engine-bay tidy-ups, or replacing an ageing factory harness before it becomes a problem.
Factory replacement engine harnesses
Some examples of replacement engine looms we have manufactured. These are built to replace the ageing factory engine harness while retaining the original-style layout and finish.





Looms that we cover
The range includes everyday models as well as selected special applications that are becoming increasingly difficult to find good original wiring for.
Don't see your exact combination?
Our replacement harness range is continually expanding. Contact us with your vehicle, engine and transmission combination and we can confirm availability.
