Ok, my phone finally sent this other picture I took at the same time as the other one! Earlier I said I had an 8 fuse block, you can see it is a 6 fuse.
You see the thicker red wire (10 gauge) coming from battery it is on the post on the left side of the fuse block (in the picture, a blue wire is also there...dont worry about that little guy, I did something I shouldnt have done with that blue one).
Like I said that red wire is from the battery, positive side and it brings power to the entire fuse block, therefore bringing power to potentially every accessory I choose to operate.
I have lights on one, bilge, aerator, GPS, fishfinder and various interior lights. You can see all of my fuses are 5 amp, except for the one 20 amp fuse.
The individual wires from the fuses are going to switches, then accessory...then, the ground for the accessory goes to that grounding strip and eventually to negative side of battery grounding the entire circuit.