My wiring is somewhat similar, except the main power wire (the 25A red in Diesel's diagram) goes to a fuse box where I have separate fuses for the HID hi/lo, spots and heated grips. I used a 50A red wire so that the individual fuses should go first up the front, rather than everything on the red wire going if the fuse goes. That's the theory anyways...
I also have a 40A relay up front that allows me to turn off the lights up front even if the ignition is on, or just leave everything ignition powered. It may be an unnecessy item, so if I don't use the feature much I will get rid of that relay.