2001 cherokee classic. for no apparent reason and without warning my stereo and power windows will die, turn the car off and back on once or twice and works great until it goes out again, as far as I can tell its only the radio and windows going out, maybe a ground issue? anyone experience this? What ground point could cause this, any clues would be appreciated. by the way, I bought the jeep about 3 months ago and replaced the 4 stock speakers, only electrical type mods that have been done yet. Thanks