Ok I got the opus 150w ps and I want to hook it up...right now I just have an 8 gauge cable from the battery along with an 8 gauge ground. I just want to see if this power supply will power my p4 system. Its a Asusp4b533 mobo with a 2.0 ghz p4. I have no idea how to connect my 8 gauge wires to the little (looks like 14 or 16) gauge wires coming out of the opus. Please help....little lost....

Also I am getting a power distro block cause I will be hooking up an amp and understand I need 4 gauge to the distro then 8 gauge out I'm just stumped on this part.