Car Bluetooth Aux Adapter Module Audio Stereo Aux Radio Cable for All Kenwood 13 pin CD Host KRC 553 CA C2AX KCA iP500 CA C1AX|Cables, Adapters & Sockets| - AliExpress
KENWOOD KRC-777R Auto Stereo Ribbon Flat Flex Cable | eBay
KENWOOD KRC-777R 877R W 977R PS1077R Service Manual download, schematics, eeprom, repair info for electronics experts