About five months ago just out of the blue my car stereo stopped working. We couldn't figure out why... nothing had changed... it lit up, looked to be working, but no sound. Then, about four hours later, it started working again (which was terrifying considering we had left it on with the volume turned all the way up)... That was about five months ago. Now, whenever it rains, or there is high moisture in the air, then the radio doesn't work until (we assume) it dries out. What could be causing this? No one had touched any wiring what-so-ever.