MK4 Headlight Harness (10 Pin to 12 Pin Conversion)

This harness is designed for MK4 / PQ34 vehicles originally equipped with factory 10 pin halogen headlights converting to OEM 12 pin Bi Xenon headlights.

The factory halogen and Bi Xenon headlights use different connector and wiring configurations. This harness adapts the factory 10 pin vehicle wiring to the 12 pin Bi Xenon headlight connection without cutting or splicing the original wiring.

Key Features

• Converts the factory 10 pin halogen headlight connector to a 12 pin Bi Xenon headlight connector • Supports low beam, high beam, DRL, and parking light functions where applicable • Plug and play design with no cutting or splicing required • Uses OEM style connectors and the correct automotive wire gauges • Properly sized and sleeved for clean factory style routing

Fitment & Compatibility

• MK4 Golf • MK4 GTI • MK4 Jetta • Compatible PQ34 platform applications • Vehicles originally equipped with factory 10 pin halogen headlights • OEM Bi Xenon headlights using the compatible 12 pin connector configuration

Important

Please confirm that your vehicle has the factory 10 pin halogen headlight connector and that your replacement Bi Xenon headlights use the 12 pin connector before ordering.

Other Volkswagen / Audi applications may use similar connectors but can have different pin configurations.

If you are unsure about compatibility, send your VIN along with photos of the factory and replacement headlight connectors and compatibility can be confirmed before ordering.

Why This Harness?

MK4 vehicles equipped with factory halogen headlights use a 10 pin wiring configuration that does not directly connect to OEM 12 pin Bi Xenon headlights.

This harness adapts the required lighting circuits to the 12 pin Bi Xenon configuration while keeping the original vehicle wiring intact, providing a clean and reversible installation.