Enhance your MK8 S model with this retrofit harness, designed specifically for vehicles originally equipped with Entry LED headlights. The factory Entry LED headlights use advanced reflector-style LED illumination, while the turn signals remain incandescent.
This harness enables you to upgrade to the IQ Headlights, the premium lighting option found on 2022+ MK8 GTI SE / Autobahn, 2023+ GTI S / SE / Autobahn, and Golf R models.
Features
Enables upgrade from Entry LED to full IQ LED headlights
Supports both NAR (North American) and ECE (European) IQ headlight versions
Designed for proper signal routing, communication, and power management
Provides integration for Dynamic Light Assist (DLA) and Matrix beam where supported
Headlight Upgrade Details
The IQ Headlights deliver:
Full LED illumination, including LED turn signals
Advanced lens technology for sharper beam patterns and improved visibility
Integrated static cornering lights with a dedicated poor weather function
Support for Dynamic Light Assist (DLA) or Matrix lighting, depending on configuration
Required Components
To complete this retrofit, the following parts are needed:
IQ Headlights (NAR or ECE versions)
Height sensor (front and rear recommended; rear only is sufficient for basic setup)
4B multifunction module
Fitment
Designed for MK8 and MK8.5 S models originally equipped with Entry LED headlights
Compatible with both GTI and Golf platforms using the same headlight interface
Not plug-and-play — additional components and coding are required
Why Use This Harness
This harness bridges the wiring difference between the Entry LED and IQ headlight systems, providing a reliable upgrade path to the factory high-end lighting system. When combined with proper sensors and module setup, it delivers true OEM-level functionality and safety.
Installation Notes
Not plug-and-play, requires component installation and module coding
Dataset and coding required to enable all functions
Professional installation or electrical experience recommended
Notes
For dataset and coding services, visit www.acmtechnik.com
Verify your headlight type and part numbers before installation
CODING GUIDE (PDF)
A downloadable coding guide is available at the bottom of this page.
www.acmtechnik.com/