I just finished installing a Blue Sea 5025 that I purchased from http://www.northeastmarineelectronics.com/. I chose to wire it hot directly to the battery (no relay) so I can have constant power for my air compressor. Other farkles (heated grips, Stebel air horn) will be switched with relays.
I used SS 8-32 screws, washers, and nuts with a dab of silicone underneath the splashguard. I also used 1/2" spacers to keep the fuse block level above a protrusion.
Notice the color-matched ring connectors (like the faster blue paint, they conduct better than yellow or red).
A couple of rubber grommets clean up the holes to the battery, but are probably not necessary with the plastic (vs. metal). The black screw covers hide the slightly too long screws.
My signature installation includes these nifty little screw covers to keep everything tidy.
The next add will be a cigarette adapter, then a Stebel air horn, then Dual Star heated grips cannibalized off the Ninja 250 (not enough power to run them).