JL Audio Stealthbox® Custom-fit fiberglass enclosure with 10" W1v3 subwoofer — fits 2011-up Volkswagen Jetta sedan at Crutchfield
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 :
Suitable For VW Jetta MK7 Fiber High Profile Speaker Subwoofer Set Car Horn