I will gladly help but you have to help me do mine at the same time..
I am off thursday, friday and have to work saturday night this week give me a call....
If I am going to moab I have some work to do.. and electrical is one of them...
Thoughts.....
For dual batterys I like the setup I did in my blazer where I had a disconect switch between the batteries, and one disconnect switch for the line to the winch. I also used a big diode so both batteries would charge with the switch between batteries was open.. this kept the batts seperate but still allowed them to charge.. (the main reason for the winch disconnect was the winch was wired front and rear, used #2 welding cable)
There is a link on mud somewhere for a jeep fuse box. the guy used a jeep cherokee fuse box and mounted in in front of the battery. used the relays and fuses as an extra fuse box. looked clean and has enough relays for anthing we would need, I have my buddy the wrecking yard scrounger going to find me one or two if you want one.. he is usually cheep/free
for wireing to the rear for a fridge and another power plug one of the 30amp relays would work good, then run a #10 all the way back and have more than 1 plug in the rear, the fridge only draws 4.5 amps and this would give you more than enough juice... and allow it to be switched easily... and let me know before you buy a fridge I may be able to do a group buy...