Your dealer should have the service manual which gives very detailed and complicated (to me) instructions on how to test and check everything. If I had weeks and weeks to ponder and learn maybe I could solve a problem like that -- then again, maybe not!
Have you installed any after market electronic gadgets? Have you installed a higher wattage than stock headlight? I hear those will kill a stator, not to mention burn wires.
You can hope it's just a short circuit somewhere that's draining the battery. If so, dealer should be able to track it down and fix it.
