Ok, I figured out how this works. It’s not very intuitive.
For the left fuel selector, the following settings apply:
Off = FUEL SELECTOR OFF
On = FUEL SELECTOR LEFT
Crossfeed = FUEL SELECTOR RIGHT
(Note, it is NOT “fuel selector 1”, just “fuel selector”)
For the right fuel selector, the following settings apply:
Off = FUEL SELECTOR 2 OFF
On = FUEL SELECTOR 2 RIGHT
Crossfeed = FUEL SELECTOR 2 LEFT
If using something like Spad.next, you have to set each selection to “1” for true. This example is for Fuel Selector 2 Off: