This car radio connection is an ISO cable adapter designed to integrate aftermarket audio systems into the factory wiring and steering wheel remote control. It utilizes the existing plug architecture of the vehicle to transmit power, speaker, and control signals between the new car radio and the wiring harness. During installation, the adapter is connected to the vehicle's wiring harness and the ISO socket of the aftermarket device. This eliminates the need to cut individual wires, and the factory steering wheel remote control remains functional. Typical applications include replacing factory radios in compact and mid-range cars, where the steering wheel remote control and navigation interfaces of the original manufacturer are to be retained. The component acts as a passive interface, is compatible with certain radio families of the original manufacturer, and simplifies the electrical connection in retrofit projects.