Newbie 500 anniversario

[Nicfiatfiend]

Hi
I feel really stupid posting this but here we go
Bought an anniversario back in the summer . No instruction manual ect and tried looking online but how do the headlights get turned on ?
What setting ?
When mine go on there’s a number by it that says 3 ?
I have looked online / YouTube can anyone give me step by step
Thank you