Hi all.
Firstly let me apologise in advance if this question has already been answered, if it has, I can't find it!

I've just fitted an led Audi 'ring' badge to the front grill of my 2016 A4 TDI. Fitting went without a hitch but then... the headlight socket, a pain to get at and even harder to un-latch. However, I eventually got access to the pins/wires it but couldn't find a switched supply (even with a meter) I did find a permanent 12v supply but obviously that's no good as it has to work through the sidelights. I should say not all of the 14 pins are in use. I did try reversing the meter probes in case it had negative (ground) switching but still found nothing. Does anyone know the colour codes or pin numbers of the wires I need to tap?

Thanks in advance Tarquin