I started my car one day to let it run (due to Inactivity) and i popped in a CD to listen to while working on It. As soon as i did the whole system stopped working, and refuses to turn on. Ive checked and cleaned my fuses, still nothing. All my dashboard lights and AC units work, but the stereo does not. I had to jump it after i turned it off, but my battery is fairly new. Could it be the wiring?