I added the avionics master relay to the relay board. I've read a lot about whether an avionics master is necessary at all, but I like the idea. It isn't a single point of failure in my ship because both EFIS screens have their own backup batteries and the IBBS can provide power to COM # 2 and the Transponder.
As called for in the SkyView documentation, I also installed two holders for 1A fuses to protect the shunt wires that go to the EFIS via the EMS box.
