Have problems...Need Help!

I know I had soem elecrical issues because everything was running funny, well now its terrible. I have popped 2 60 amp fuses in 2 days and after changing it last night it still wont work. So I need you all to give me a quick rundown on your electrical.

Right now I am running 4 guage with 2 60 amp fuses to the back fro mthe battery, tied into a seloniod for the pressure switch and the compressor and my ingition. Is this normal, is this right, and do i have to use a seloniod? I have been told to switch to a relay and lose the seloniod cause they suck? HELP. Its ont the ground cause the comp wont run.