takric wrote on Sep 23^rd, 2023 at 10:55am:

There is no default lights key on xbox....that's why I can't assign it.

In Control Options, head to the "LIGHTS" section. In the drop down menu, find "TOGGLE LIGHTS" assign a key bind that is convenient for you. Once in flight, that is used to turn the lights of the aircraft on. From there you can set glareshield/flood/instrument lights to your preference regardless if the flight was started day or night.
Hope this solution helps you.