For MK5 / PQ34 vehicles, this harness converts the factory 10-pin halogen wiring to a 12-pin interface so you can run OEM Bi-Xenon headlights. It includes a built-in capacitor to stabilize PWM signals and prevent main beam flicker no extra modules needed.
 
Key Features
Converts 10-pin halogen wiring to 12-pin Bi-Xenon headlight pinout
Built-in capacitor smooths PWM signals and eliminates flickering
Plug-and-play design
Preserves low beam, high beam, DRL, and marker functions
OEM-style connectors and proper wire gauge for reliable performance
 
Important Notes / Limitations
No auto-leveling support — this harness does not support leveling motors or adaptive headlight functionality
Use this adapter only for OEM Bi-Xenon headlight units
 
Why Use This Harness
Many aftermarket or OEM Bi-Xenon headlights rely on a 12-pin interface. On older MK5 / PQ34 models, the factory harness was 10-pin halogen. This adapter fills the gap and lets your Bi-Xenon units operate correctly—flicker-free and stable—without wiring hacks or coding.
 
Fitment & Compatibility
Platform: MK5 / PQ34 with 10-pin halogen wiring
Intended for use with OEM 12-pin Bi-Xenon headlights
Not for adaptive, matrix, or non-standard lighting systems
If you’re unsure: send me connector photos or your VIN and I’ll verify the correct harness for your setup