An auxiliary port (AUX) is a type of standard communications port on a device that accommodates audio signals for: MP3 players. Headphones and headsets. And other audio devices, including some fairly traditional audio technologies.
How do you use a radio AUX cord?
Q: How do you use the auxiliary input jack on the radio?Leave the ignition off.Make sure the radio is off.Connect your device to the extension cable.Connect the cable to the auxiliary jack.Turn on the ignition.Turn on the radio.Press the AUX button.Choose Line, Line In or SYNC Line In from the menu.More items •15 Dec 2015
AUX connections (input or output) Alongside the inputs for various players such as Blu-ray players and connections for the speakers themselves, the most important input on the amplifier or compact system is called AUX or auxiliary. This is simply an audio input to which you can connect players of your choice.