How to connect AUX to Blaupunkt RD4 N1 MPS? - elektroda.com
Why Yatour interface had bad sound noise on my Peugeot/Citroen OEM Blaupunkt RD4 radio - China Yatour RD4,Blaupunkt RD4 sound,Blaupunkt RD4 from Guangzhou Yatour Electronics Technology Co.,Ltd.
Instalação do Modulo Bluetooth/USB no Radio RD4 - Citroen C4 / Peugeot - YouTube