I have a Uniden pro 640e with a mono to stereo adaptor and a 1/8" to 1/8" cable from the radio to the aux input. (the adapter is so I get signal in both channels of the stereo). I just toggle to "aux" on my head unit when I want to hear the CB. It's very helpful when going down the highway with a soft top. One drawback; the radio amp is so much more sensitive than the internal audio amp in a CB that you get some "talkback" through the stereo when you transmit. It's not good talkback, but it's not bad enough to cause feedback. It's a lot worse on sideband, which is what I use most of the time. It's not as bad on straight AM.