Parking lights.
Its hard to tell from the diagram - I think there's a connection missing or other small error.
They may share the same fuse as the stop lights.
But the stop lights get power from wire F38, and the parking lights get power from F37. At least that's what it looks like to me.
F37 should connect to the second power feed terminal on the headlight. When the switch is pulled out, power to the lights goes through green, tan and or yellow wires.