maybe i misunderstood the question.... but..when you disconnect the battery the head unit is supposed to reset..because it has no power at all from anywhere....'95 Eclipse RSINTERIOR-Sony CDXM 750-2 JL Audio 12w0 subs-Premiere Amp-CompuStar 2WAS Alarm with Remote Start and PagerEXTERIOR-Enkei 15" wheels (came with the car)-2nd Generation Altezza Tails-Clear Bumper Lenses-APC Speed Glo Mirrors (with turn signals) -Red LED Washer NozzlesPERFORMANCE-K&N Filter