Citroen C3 MK2 - common connection between honk, Headlight and AC?

[Veno]

Hi Folks,

Something very strange happen with my c3 mk2. After driving ~30 min on cold day, my car started honking (while driving) non stopping. I stopped the car and restarted, the honking continued. I drove until the nearest shop and they removed the fuse so I can drive again until home, since they didn't had availability to check it. While driving home I realized the headlight and AC was also not working.

Can anyone share the wiring scheme that could help find any common electrical connection between honk, AC and headlights?

Thanks in advance