Hyundai i30 N | Soundsystem with Subwoofer Installation | ARS24 - YouTube
Kia Hyundai Factory Radio Add A Subwoofer Amplifier Plug & Play Wire H – MotoCARR
Amazon.com: Add An Amp Amplifier Adapter Interface to Factory OEM Car Stereo Radio System for Subwoofer for some Hyundai and Kia Vehicles - No Factory Premium External Amp - Compatible Vehicles Listed
installing upgraded sub to factory location | Hyundai Forums