Red Flat Aux Cable Car Stereo Wire Audio Speaker Cord 3.5mm Jack Adapter Auxiliary [Tangle Free]. Looking for a way to use your iPod, iPhone, Tablet, Smartphone or mp3 player with your car or home stereo? These high-quality flat cable tangle free aux-in cable is the perfect solution! Simply plug one end into the headphone socket of your music device and the other into the jack in your car (or home) stereo! This convenient cable lets you connect your mobile device to a car stereo, speaker system, or any other output device that has a 3.5-millimeter jack. Flat design prevents tangles. The auxiliary cable features a flat design that prevents tangling. This makes the cable easy to store, since you can wind it without having to worry about knots or kinks. Comes in Bulk Packaging (Non-Retail Package).