ok, i'm driving to the beach today, and everything is normal, nothing seems wrong. but after 3 hours or so of it parked, i'm leaving the beach and all of a sudden my "check gauges" light comes on and i notice that my voltage is real real low. now everytime i go to use my turn signal, the speedometer starts to flutter a little. i'm not sure what the problem is, but i've been noticing that my voltage has been decreasing a little over the past couple of months. you think my alternator or battery is about to die? or maybe my gauge all of a sudden broke? i'm just confused on how it can work perfectly one sec, and not the next.