If you’re like most people, you probably have an mp3 player in your car. But if you’re like me, you don’t know how to connect it to your car’s audio system without using an auxiliary input. Luckily, there are a few ways to do this without using an auxiliary input. The first way is to use a Bluetooth connection. If your mp3 player has a Bluetooth connection, you can use that to connect your mp3 player to your car’s audio system. The second way is to use the AUX jack on your car’s audio system. This jack is usually located near the front of the car and it will allow you to connect your mp3 player directly to the audio system’s AUX port. The last way is to use a USB cable and plug your mp3 player into the USB port on your car’s computer. This will allow you to connect your mp3 player directly to the audio system’s USB port.