Locate the analog audio output lines traveling from the AM/FM tuner module sub-board into the main audio processor IC on the motherboard.
Purchase a "VAN-bus RD3 AUX/Bluetooth interface box" (ensure it explicitly states RD3 compatibility, as RD4 CAN-bus boxes will not work). Plug the interface into the rear changer port. siemens vdo rd3 01 service manual full
Locate the analog audio output lines traveling from the AM/FM tuner module sub-board into the main audio processor IC on the motherboard.
Purchase a "VAN-bus RD3 AUX/Bluetooth interface box" (ensure it explicitly states RD3 compatibility, as RD4 CAN-bus boxes will not work). Plug the interface into the rear changer port.