i had the same problem, it turns out my ignition key mechanism was just warn and when i would go to shut it off when i thought was in off position was really one turn backward, wich kept the dash "GEN" light on wich woar down the abttery. if its a bare wire it shoudl drain within hours not within 2 days. a light or somthing of that sort is probably on, make sure the key is in the right position
