I'll suggest:
Run a red 10 gauge wire from the positive terminal on the battery to the fuse block (under the seat is a good place to put the block) and then a green 10 gauge wire from the negative terminal on the battery to a series of pigtails with bullet connectors installed on the pigtails. Every accessory runs off of its own fuse, and you don't have to play with frame bolts to ground your accessories. Everything's easy to trace and troubleshoot that way, and your accessories don't affect the other electrical components (or vice versa). And if you have switched your seat bolts to ball detent pins you can get to it quickly and easily. Additionally, if you run 10 gauge wires to your power port, you can jump your bike, or use yours to jump another bike, through the power port with a heavy duty plug. That'll save you having to pull the seat, ECM and battery cover to do the job.