But you can bet that if you’re looking at a low-priced sedan you’ll need to buy an entire upgrade package just to get an audio jack on the ... skills to adding the input.

MP3 car adapters plug into the player's headset jack, which outputs analog sound ... Many new cars have an auxiliary audio input socket on the dashboard for this purpose, labeled "AUX," "Audio ...

Whether that audio source is a 3.5 mm jack or a Bluetooth ... In the case of a simple headphone jack input, you simply need to wire up an aux cord or 3.5 mm jack somewhere you can get to it ...