battery isolator and fuses diagram

I am about to start hooking up my isolator and second battery and I just wanted to make sure I have everything fused right. I would really appreciate it if some one could look over this diagram and give me any tips or info I might have wrong.

I forgot to mention, my isolator is 140A as well.

The only problem I see is that there is an isolator in there. What maker you believe that you need one? What kind of system do you have? Daily driver, competition...? What?It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."

This car is a daily driver right now but Im not sure what my end goal is yet. I have a Car PC system (5.1 Surround sound), and a 750W AMP. The PC is ALWAYS on in standby or hibernate mode while it uses low power, it still uses power. If I went a day or two with out starting my car at all it could potentially drain my battery under the voltage it needs to start (11.2v or whatever) The isolator is insurance more or less to make sure I never come out to a car that wont start. I go to a lot of parties out side where I often let my system run without the car being started, with the PC and AMP running its a good amount of draw.

Would I be able to just use 100A fuses for every connection instead of 90's and 100's? I can not find 90s to start with and it would be easier to just pick up a pack of 100As. Then I would also have 10A of security incase of minor spikes but still have protection from major shorts.

As long as your wire is safe at 100A, then use 100A fuses. If you are using 4 gauge, 100A is perfectly fine, in fact, it is acceptable for use up to 150A. I have seen every chart tell me that 100A can be used on a #8, but I'd not ever use a fuse that big on a wire that small. (I wouldn't go smaller than a #6, but that's just me...)It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."

Awesome, thanks a lot I seriously appreciate it. I was actually going to use 8G but Ill go pick up some 4 if you think it would be safer. Im not an expert in this area by any means so Ill take recommendations seriously haha.

I'd pull #4. I'm a bit of a "buffer" fan... Stick with the 100A fuses, still.It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."