I recently attempted to install a subwoofer into my 1998 jeep wrangler. After hooking everything up to the amp we tried to turn it on and the dome light and stereo won't turn on. The light and the stereo are most likely wired to the same power source because it goes through the sound bar. We took everything we did out and it still won't turn on. Could it be a short in a wire? A battery problem? All other lights and powered devices work.