3.7-5v Mini Bluetooth Stereo Audio Receiver Board Module With Mic For Arduino Mp3 Player Bluetooth Lossless Decoder Board Type-c - Integrated Circuits - AliExpress
Steering wheel remote audio control - General Electronics - Arduino Forum
Arduino Car Stereo - Retro JDM
A Retro Car Stereo With Arduino Inside | Hackaday
Gikfun TRRS 3.5mm Jack Breakout Headphone Video Audio MP3 Jack for Arduino (Pack of 3pcs)