Lost all power to sleeper after LVD - 2016 579

So as I was trying to fix an issue where none of my front vents are working, I had the truck in contact with the air blowing full power - and then I got a LVD warning. Didnt think nothing of it since I get it a lot, so didnt turn on truck.

Now all my sleeper power is gone, no lights, fridge doesnt work.

What could be a fix?
-Fuse? Should i look at the fuses below the bed?
-Mega fuse? If there is 1 - where is it located?
-Bad batteries?

 

So the 2 fuses labeled Powerpoint1 and Cig Light go out and I lose all power to sleeper. I also can’t seem to control the drivers dash above the speedometer. The knob/back button isnt working.
I have no idea what the problem is now.
A bad relay?
How do I check for faulty relays?

 

Yes I did, when a friend and I were messing around with the fuses below the steering wheel a few days earlier before this happened (trying to see why my front vents dont work, which is another issue completely), 1 of us forgot to put 1 of the fuses back which is a pretty important fuse. I think it was the CECU fuse if I remember, so yeah even when i triple checked all the fuses when I was trying to fix the issue - I guess I kept on missing the fact that 1 of the fuses was missing