Dash lighting issue

So I am assuming the fuse that the big arrow is pointing to (see pic) has to do with the instrument lighting because the wires going out are orange which I believe is instrument lighting color, right?

The problem is, it does not have any juice going into the fuse so obviously there is no juice going out. What is the source of this fuse wiring coming from?

Also, see the two open fuses on the block - far right in pic. These are both empty - are these supposed to be blank and left for accessories? I tied into one for my guages and just put a 5 amp inline fuse instead of using the fuse block.