How To Convert The Citroen C4 RD4 Headunit Into An RT4 Headunit | PDF | Electrical Connector | Equipment
CITROEN AUX INPUT C2 C3 C4 C5 C8 3.5mm jack CTVPGX011 & RD4 radio release keys £49.90 - PicClick UK
Citroen C3 Radio Original Support Usb Function Replace Original Rd4 Radio Plug And Play - Car Radios - AliExpress
Citroen C4 display screen, RD4 stereo LCD Multi function clock dash | eBay
12pin Car Radio Rd4 Bluetooth Music Aux O Cable Adapter Replacement, Bluetooth Wireless O Transmitter For Citroen C2 C3 C4 C5 C6 C8 (with Microphone) | Fruugo NO
Trying to install a bluetooth adapter to my 2008 Citroen C4, but pin 11 that I was told to splice to is unused in my radio. What are my options? I could