The fuse box is inside the drivers door on the side of the dashboard. There is a diagram of the fuse box on the inside of the cover. The fuse for the stereo is fuse 42 on the diagram 3rd fuse up on the left side of the fuse box.
there should be a card on the door of your fuse panel that has symbols for each fuse, matching each fuse number with its function. the fuse panel is on the driver's side of the dash - you have to open the car door to access it.