Just had new brake pads installed and rotars resurfaced, now the brake lights come on when I am not with the car and the battery is dead everymorning. I "imagine" this is some sort of brake pressure sensor that needs to be ajusted or is faulty. Manually, the brake lights activate with the slightest amount of "touching" of the brake pedal.
The shop installing the pads had no idea what could be causing this, so before I take it back to them to investigate, I thought someone else might have suggestions I can go to them with.

2004 A4
110,000 miles
No warning lights are on at this time
The brakes make no noise and work fine.
No previous electrical or brake light issues
Thanks.
Murray