Fuse Block

Having a problem with my fuse block. I noticed my tac and shift light were not working. So, I checked the in-line fuse and it was ok, but had no power. I had used the plug, at the bottom right side of the fuse block. I checked all the fuses and they were fine. Then I checked each for power. I find that the whole right side of the fuse block is powerless. Left side is fine.
Any suggestions on what might be wrong? Could the bulkhead conections be loose?

thats one thing. or the power line going to that side is chafed some where and is grounding out. another thing is the block it self could block it self could be messed up internally.