I went through the VPX configurator to assign pins.
I have used up all power pins, but I get bulb-out indications on all major bulbs, other than strobes and cockpit lights. If needed, I can piggyback Fan from Garmin 430 to pick up another pin. But I don't know what it woudl be for at this time.
I tried to assign the connectors to match the side of the aircraft where the wires currently run so there is a minimum of cross over at the VPX.
Unless I find a compelling reason, I am going to run with this schematic.
I will re-draw it in Orcad to add addition switch functions