what size fuse.

Ok so I'm installing my sq system in my car.  I have 2 Audison amps, LRx 4.1K and 6.9.  Those total 180 amps for the fuses.  Ok that makes since.  I have a distro block for those and will fuse accordingly.  My question is this.  I have all my components, leds, head unit, processor, and stuff like that running out of that distro block as well.  How do I fiugre out the size of that fuse?  Do I need to add up all the components and stuff powered off of that and that would be the size of the fuse? 

Ok so here's what I've found out by looking in the owner guide. The interior fuse box is drawing, or can potentially draw, about 375 amps according to adding up all the fuses. And the fuse box under the hood is drawing or potentially drawing 597.5 amps. That's a lot. Can anyone here help me with the starter. I'm not seeing a fuse for the starter in either box unless of course I'm not looking at it correctly. What should that be fused at? I've got pictures uploading and will be posting sometime today! Stay tuned.

Sorry pasted my last response from another forum, there are no pictures.  Disregard that last sentence.

Add the draw of all of these then add 5amps to the total for your main fuse located 4" from the battery or half the cable diameter divide the loads (like an R/Start does)and run two or more fuses at the battery. Starter motors solenoids generally don't have fuses, the solenoid draws about 15 amps and turning over the draw is 50-90 amps. Don't forget not everything will be on at once, most modern cars have multiple ignition wires, when the key is moved to the start position, for instance as a rule only ignition1 and starter circuits are live.

Power & Ground Cable Specs Cable Size Wire Gauge Current Capacity Amperage (amps) 1/0 350 2 225 4 150 8 100 10 60 12 40 14 25 16 15

The fuse you are going to put at the distribution block is there to protect the wire that feedsall the other things.  It should be fused at or preferably below the current capacity of the wire being used.  Way below is always better.