Twin Headlight & Horn Wiring Loom Harness (H4 H1) Holden HX HZ - WK1007

When restoring a classic properly, the details matter — especially under the bonnet. Designed specifically for Holden HX and HZ models equipped with factory twin headlights (H4 + H1 setup), this Twin Headlight & Relay Wiring Loom Harness is a factory-spec reproduction loom ideal for authentic restorations or replacing damaged, modified or brittle original wiring. Unlike relay upgrade kits, this harness maintains original-style configuration while providing brand new, reliable wiring for both the twin headlight system and the integrated dual horn circuit.Supports Correct Headlight Configuration: 2 x H4 (High/Low Beam) Bulbs, and 2 x H1 (High Beam Only) Bulbs.Integrated Dual Horn Circuit: Includes wiring and correct plugs for the factory dual “High/Low” note horns fitted to higher-trim HX and HZ models.Direct Factory Replacement: Engineered to plug directly into the main firewall/bulkhead harness, replacing the front lighting and horn section of the loom.Period-Correct Connectors: Features factory-style plastic plugs and ring terminals for straightforward bolt-on installation.Factory-Correct Wire Colours: Wire colours closely match original Holden wiring diagrams, making future diagnostics and troubleshooting far easier.Durable Automotive-Grade Wiring: Manufactured using modern copper wiring and insulation for improved reliability and longevity.Protective Engine Bay Sheathing: Pre-wrapped in quality automotive conduit to resist heat, oil and general engine bay exposure.For enthusiasts chasing an authentic restoration or simply wanting to tidy up years of wiring repairs, the Twin Headlight & Relay Wiring Loom Harness delivers factory-correct appearance, reliable performance and clean, plug-in installation — exactly how it should be under the bonnet of a properly sorted Holden.