If you want to connect your iPhone to a car radio without using Bluetooth, there are a few different ways you can go about it. One option is to use an auxiliary cord. This type of cord plugs into the headphone jack on the iPhone and connects to the car stereo via an audio cable. Another option is to use a USB adapter. This type of adapter plugs into the iPhone’s Lightning port and connects to the car stereo via a USB cable. Both methods work well, but depending on your vehicle and stereo, one might be easier than the other. ..