Getting Ready To Wire The S-1 Upper Console

I have worked out a work in progress wiring scheme for my season one Upper Console. The way I had it wired before when I was using the season 3 Upper Console which didn't fit quite right, was I had a separate power wire running to each of the switches. For some reason I didn't realize that I only needed one power wire to run to the Upper Console and then just branch off of that so long as the wire is rated the correct AWG to handle the load. I'm still trying to figure out what all of the Season One Upper Console electronics pull power wise plus all of the lighted rocker switches for up there as well. Once I know that I'll have a far better idea of what gauge (AWG) wire to run up to the console. Like I say though in the meantime I have worked out a work in progress wiring diagram for this particular job. Seeing how most of the electronics are LEDs and the switches will be just going to activate the magnetic coils of SPST Relays I can't see the power load being that much, I could probably get away with an 18 AWG or even a 16 AWG gauge wire running from the pawer fuse block I have installed into the lower hush panel on the passenger side. I just want to be sure first before I go to the trouble of running any sort of power wire up there.