I believe one of those fuses, goes down and powers the fusebox inside the car.
The one you have pictured, I don't know if I'd try powering from there.
You might try applying 12V inside the instrument panel fuse box, but I think that would be a little more difficult.
Not sure that you noticed, but the wires are labeled 1,2,3 and the terminals are labeled 1,2,3,4 with 1 being the connection closest to the battery post.
If someone has ripped things apart t he top of the box might be disconnected, but I think you would be able to find those three red power wires.