First, can you hook up a CD changer to these? Second, The radio stations have a tendency to just crap out-they will be coming in perfectly, and then just go static, them come back. I also found that the clock will sometimes get behind, like it has lost power. What seems to be most interesting is that the more the radio is on, the less it happens. I stored the car over the winter, so it did it alot when I first. Now that I have been using it, it seems to somewhat "heal" itself.