2011 Subaru Outback electrical system problems

On june 30, 2011 at 11pm I looked out of my window and our entire garage was engulfed in flames. This building was not completed and had no electrical or heating system. I believed at that time that it was the car(subaru) that started the fire. ,as the intensity of the fire was on the side of the garage where it was parked.I had just had it detailed the day before the fire, as the dealership had done some extra electrical work and the car was returned to us filthy.

Purchased this car 7/2011. No problem with exterior headlights until about one year after purchase. Highbeams are fine. Never had to replace them. Running lights have never had an issue. Around 11/2012, regular headlights(both bulbs in the headlight housing )have been repeatedly replaced. In oct 2013, both bulbs on driver side were replaced. Went several weeks later for my state safety sticker, the small bulb needed to be replaced on the driver side.