MK6 GLI Taillight Harness (LED to Halogen Conversion)
This harness is designed for MK6 GLI models originally equipped with factory North American LED taillights converting to halogen style or compatible aftermarket taillights.
The factory GLI LED taillights use a combined PWM brake and turn signal configuration, while halogen style and many aftermarket taillights require separate brake and turn signal circuits.
This harness provides the required wiring to separate and reroute these functions through the J519 / CECM for proper operation.
Key Features
• Converts the factory MK6 GLI NAR LED wiring for use with halogen style or compatible aftermarket taillights • Provides separate brake and turn signal circuits • Connects directly to the J519 / CECM for the required lighting outputs • Supports taillights requiring independent brake and turn signal inputs • Uses OEM style connectors and the correct automotive wire gauges • Properly sized and sleeved for clean factory style routing
Fitment & Compatibility
• MK6 GLI models originally equipped with factory NAR LED taillights • Halogen style replacement taillights • Compatible aftermarket taillights requiring separate brake and turn signal circuits
Important
This is a hardwire conversion harness and is not plug and play.
Installation requires additional wiring to the J519 / CECM and modification of the existing taillight wiring according to the supplied installation information.
This harness is specifically designed for vehicles originally equipped with the factory MK6 GLI North American LED taillight configuration.
Replacement taillights must use separate brake and turn signal inputs for this conversion.
If you are unsure about compatibility, send your VIN along with photos of the factory and replacement taillights and connectors and compatibility can be confirmed before ordering.
Why This Harness?
Factory MK6 GLI NAR LED taillights use a combined PWM brake and turn signal circuit that does not directly match halogen style taillights with independent brake and turn signal inputs.
This harness provides the additional wiring required to obtain and route the separate lighting outputs from the J519 / CECM for proper operation of the replacement taillights.
Installation Guide
A detailed installation guide is available in PDF format at the bottom of this page.
MK6 GLI Taillight Harness (LED to Halogen Conversion)
Handmade. Built to Order.
Every MK6IX wiring harness is individually handcrafted and tested. We do not mass produce or stock preassembled harnesses.
Please allow 10 to 15 days for production before shipping.
Orders are fulfilled in the order they are received. Tracking information will be emailed automatically once your order is ready to ship.
Thank you for your patience and for supporting a small business!

