If you had simply stated initially that you had a functioning knowledge of vehicle electrics and a relayed harness built it would have been a lot easier to address your question.
So are you looking for a 12v source for the lights, a 12v source to trigger the relay, or both?
Wiring diagram for the switch is here:
https://www.newtis.info/tisv2/a/en/e...ights/BswytY85
Diagram and functional description for the FRM is here:
https://www.newtis.info/tisv2/a/en/e...otwell-module/
I would think the easiest approach would be to tap the supply for one of the existing fog lights to trigger the relay, probably at or near the light itself. That puts them both in the same loop and doesn't overtax the existing wires, though it does not give you the option of selectively turning them off.
For main power, assuming it's a fused relay, you're probably best off pulling from G6430 (EDIT: at X6404, I suspect), the engine bay jump start connector, rather than vampire-tapping something smaller. It's here:
https://www.newtis.info/tisv2/a/en/e...-point/RW8LIXY . You could also consider the starter, but that's not as easily accessed.
Finally, there's no sense of superiority here, false or otherwise. You asked a question to which (presumably) you didn't know the answer. I answered based on what you wrote and assumptions based on what you didn't. I don't know what you know or don't unless you tell me.