It sounds like the buzzer relay for the turn signal has failed causing the battery to drain. The buzzer relay is location on the driver side behind dash board next to the steering column bracket on the left side of the steering column. Usually they have a cylinder shape and have 2 or 3 wires connected to it.
Thanks for the question and let me know what you find.
Tuesday, June 10th, 2014 AT 2:12 PM