This car radio adapter converts steering wheel control signals into a format that can be used by aftermarket audio devices in vehicles with a CAN bus network. It is integrated into the vehicle's wiring harness, intercepts the factory steering commands, and converts them into compatible control signals for the audio interface, while preserving the original remote control functions. Typically, it is used when retrofitting audio systems where the factory steering controls need to be retained. The device connects to the vehicle's wiring harness and communicates via the CAN bus to map the button assignments to the new car radio. Special attention is paid during installation to ensure a clean connection and secure electrical contacts, ensuring reliable signal transmission within the existing network architecture of the vehicle.