Universal 20 Pin RCA Cable for Android Car Stereo Radio Subwoofer Amp Output AUX Adapter Wire Harness Car Audio Accessories

Functions and Features of RCA CablesAn RCA cable is a type of connection cable that transmits audio/video signals through a lotus-shaped connector (RCA interface), named for its resemblance to a lotus petal. It is widely used for functions such as in-car audio and in-car video transmission.（If the interface of your car audio head unit does not match the aftermarket amplifier or subwoofer, you will need to purchase a high-quality RCA audio signal cable to achieve lossless audio transmission and fully unleash the potential of your sound system.）Product Interface Introduction1. Microphone Input2. Video Input3. Video Output4. Subwoofer Interface5. Auxiliary Input Right Channel6. Auxiliary Input Left Channel7. Audio Output Left Channel8. Fan Interface9. Amplifier Function Control10. Audio Output Right ChannelNote: The RCA cable must be connected to the RCA output interface on the back of the car stereo unit.Frequently Asked Questions (FAQ)Q: My vehicle already has a built‑in antenna. Do I still need this?A: If your factory‑installed navigation system often experiences lag, drift, or positioning failure in weak signal areas, adding this external antenna can significantly improve performance.Q: There's no improvement in signal after installation. What should I do?A: Please check that the connector is securely tightened, ensure the USB power supply is functioning properly, and try adjusting the placement of the antenna.Important Notes1.To ensure optimal performance, please place the antenna as close to the window as possible, and avoid positioning it completely under a metal roof.2.Do not bend the cable forcefully, especially near the connector base.3.This product is a signal enhancement device and cannot generate signals in environments with absolutely no GPS reception (such as underground parking garages).