This is driving me nuts i start my car in the morning , no problem, battery reads 12.73, drive to work brake light and engine light are on , but then turn off by the time i get to work, same thing leaving work, is there a short somewhere ??....the legendary parasitic drain ??, Ive changed my negative cable including the battery current sensor part, where else can I check?, I mean its obvious the alternator is working.....wtf