This harness adapts the facelift MK6.5 Jetta GLI wiring to work correctly with AlpTech aftermarket tail lights. Volkswagen made small changes to the facelift models compared to the pre-facelift MK6, and these tails require a proper adapter to function without issues.
 
Key Features
Built specifically for AlpTech tail lights on MK6.5 Jetta GLI
Adapts factory wiring to match AlpTech tail pin layout
Retains full tail light functionality
Plug and play — no splicing required
Prevents wiring errors or malfunctions when installing AlpTech tails
 
Fitment & Compatibility
MK6.5 Jetta GLI (facelift, ~2013–2014) — Compatible with AlpTech tail lights using this harness
MK6 Jetta GLI (pre-facelift, 2011–2012) — Not compatible
Other tail light brands — Not supported
MK7 Jetta / MQB platform — Not compatible
 
Important: This harness is only for AlpTech tails on facelift MK6.5 Jetta GLI. If you’re unsure which model you have, send me your VIN or a photo of your connectors and I’ll confirm before you order.
 
Why This Harness
AlpTech tails do not use the same wiring configuration as the factory facelift GLI. Without this harness, you risk non-functional lights or wiring errors. This adapter is built specifically to bridge the gap so the tails work as intended.
 
Notes
Only for MK6.5 Jetta GLI with AlpTech tail lights
Not compatible with pre-facelift MK6 or other aftermarket tails
Always disconnect the battery before working with wiring
 
Download Installation Guide (PDF)