pioneer deh - 525

I got a pioneer deh - 525 cd car sterio, I want to hook this up in my boat. my wire harness that plugs into the radio has these wire colors. green, green w/black stripe. white, white w/black stripe. purple, purple w/black stripe. gray, gray w/black stripe. black. blue w/white stripe. red. and finally a yellow. Ill be hooking up 2 speakers and my power source will be to the battery. do i need to get a inline fuse or can i go to the battery direct. how do i hook up all the wires so that it will work. thanks.