Install Bluetooth Audio Module on Peugeot & Citroen Radio RD4, RD45, RD43 - YouTube
Car Dmc Bluetooth Hands Free A2dp Usb Drive Aux Adapter For Peugeot Rd4 3 2 1 Blaupunkt Radio Mp3 Audio Cd Changer For Citroen - Cables, Adapters & Sockets - AliExpress