ok recently my amps started shutting off. i figured i blown it (post in audio section) but it still turns on it just doenst push anything and clicks on and off. well then the other day my check engine light came up and my dash lights and headlights etc starting blinking dimmer off and on and my cd player started turning off. same thing happens with my radar detector. now with my amp disconnected if i turn my stereo up it starts doing it again. does anyone know whats going on? im about to sell it i hope to god its not something expensive i mean i can get away with it =) but ill still have it another month and this is annoying. my battery does corrode bad and i clean it off often though. could it be the battery? surely not the alternator? or wiring somewhere? help please

96 Eclipse GS