Everything on autodata relative to the Polo G40 is on there.
I've not looked through it in a while but think there's references to the relays made in the circuit diagrams at the back of the blue Haynes bible of lies.
I can't answer your question off the top of my head but will take a look and get back when I can, unless someone else pipes up first!
What's your issue? Fan not cutting in? Stuck on? Lots of people bypass it in favour of a manual switch............ doesn't make sense to me, don't have a dog and bark yourself!