2011 S60 D5 looking for a + 12 V when low beam is on

[Wepe]

Hi, greetings from Finland, I am new here!
Updated our Volvo V70 awd after 14 years and about 280k km laste week to a S60 D5 AWD.
I installed today DRL's and need some help.
The DRL's light up when the engine starts and should dim when the low beam is on. I need a + 12 V signal that comes on when the light are switched on. Where do I find this signal, preferable close to the head lights?
Thx - Wepe