A320 navigation lights, how do you use them, do you alternate between sys 1 and sys 2

[Checkboard]

with all the fools who stooge around the London TMA at night without landing lights

The airbus only has extendible landing lights, with the attendant vibration and fuel penalties - unlike the Boeing with it's set of lights in the wing root fairing. ... So they are only fools for flying an airbus, instead of a Boeing.