EASY INSTALLATION Quick and straightforward setup allows you to enjoy music without hassle. Connect the red power cable to 12V+, the black power cable to 12V, plug into the CD player jack, and start playing audio directly from your phone. Installation requires no special tools and can be completed in minutes. RELIABLE MATERIAL Made from ABS material, this aux adapter is built for longlasting durability and consistent performance. The sturdy construction resists wear and ensures stable audio transmission, even with regular use. COMPATIBILITY Specifically designed as a replacement for 13pin CD hosts, including KRC 553, CA C2AX, KCA, and CA C1AX models. for upgrading or replacing worn connections without changing your existing audio system. CRYSTAL CLEAR SOUND Delivering clean, quality audio, this adapter ensures your favorite music sounds just the way it should. Simply select AUX audio source on your mobile phone to enjoy rich, accurate playback. PRACTICAL APPLICATIONS 1. Ideal for revitalizing older car audio systems by enabling easy playback from modern devices without costly upgrades. 2. for drivers who want to stream music directly from their phone through their vehicle's existing CD player. 3. Useful for replacing a damaged or worn aux connection, restoring reliable audio input quickly. With its combination of durable build, simple installation, precise compatibility, and audio clarity, this adapter offers a convenient and dependable solution for connecting your phone to your car's CD player system.