OK, so I searched and figured out nobody has done this before, perhaps nobody was interested other than me. I guess I'm a visual person. I mapped it out.
Switched and dimmed for dash lights means this section has 0 to full current depending on the headlight switch and dimmer position.
Return from fuel level sensor means this is attached to the ground side of the fuel gauge, and the wire that plugs into it supplies ground through the float's variable resistor. This doesn't really belong on a fuse panel, as it is only a connector and has nothing to do with supplying power to anything, but perhaps it was considered convenient.
Always On means this always has battery voltage regardless of position of ignition switch.
Accessory means this has battery voltage in accessory and on positions of ignition switch.
Key On means this has battery voltage in on position of ignition switch, but not in accessory position.
