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 :
Set 4 Coffers Audison APK 165 Volkswagen Tiguan 2007 > System To 2 Ways 300W 6.5 | eBay
MDF subwoofer enclosure for VW Tiguan | eBay
2019 VW Tiguan sub box | Car Audio Forum | CarAudio.com