Amazon.com: Add A Bass Subwoofer Amplifier Adapter Interface w/Amp Remote Wire to Factory OEM Car Stereo Radio for select VW Made for Jetta Golf CC Passat EOS Tiguan etc- Vehicles listed below :
My install in my 2013 VW CC r-line - Car Audio Forumz - The #1 Car Audio Forum
2015 - 2023 VW Passat Amp and Sub Install - YouTube
2014 Volkswagen Passat Gets Sony Mobile ES Speaker Upgrade