I've had a few cars without 10 player cd, and there wasn't any wires. I have 2 cars with the 10 disc players, and they work every now and then. Never found anybody that can fix them. Your better off with a single player. The laser works, but the mechanics of the unit malfunction. Not a good place to put it, right above a hot muffler, way back in the bouncy trunk. When they work, the sound is great