ok my battery light in my car just came on the other day, my car was running alrigh tand then it died and the battery is relativly new like a year old or something, i don't have anything hooked up right now so i know its not a system taking this away, any ideas what is wrong with it, and if i do have to get a new one, would you guys recommend getting like a yellow top instead of a regual one because i do plna on having a system within a couple months