Use the Scosche AXT18 Antenna Extension Cable for better quality reception. It has a compact design that assists with limited space installations and helps to provide crisp clear radio quality. This car stereo antenna cable fits all standard American plug types for easy installation. This product extends the length by 18 . It can be used in conjunction with a stereo installation kit that is compatible with your vehicle. This 18 car antenna cable can be used in combination with other dash kits to build a new stereo or for a simple replacement.