i agree. I mean if your takin a trip to florida u dont anything unexpected to happen. The capacitor will help u out alot. I mean yeah all ur lcds and ps2 will work but will tend to draw more power from the battery and at night u'll see that ur headlights will dim just a little. So its like yeah u can hook up all the stuff and itll b fine wit ur alternator but id stay on the safe side. U dont wanna end up in the breakdown lane. and yes itll help a little if you disconnect ur subs, cause ur using less power.