Anonymous5 years ago000I don't have an AUX socket on my old bus. Is it possible to connect the device without it?Show in original language (French)Anonymous5 years ago000Hello, I'm not sure. Here is what I found in the description: Highway 400 works with your existing audio system using a simple AUX cable or by transmitting on an unused FM frequency. So if you have an FM radio it should work.Show in original language (French)Comment1 comment