RE: picture of a3 fuse box please
I also used the rear wiper fuse for the switched 12v source for my head unit. I tapped the wire behind the fuse box though.
Do you still need a pic? I've got a 7.1mp camera, I can help you out if you still need it. And you want the fuse box inside the car, I assume?
Turbochargers whistle while they work, superchargers whine while they screw.