I just picked up a set of S5 factory fog lights and have everything to plug / bolt up and go except for the interior switch. I just picked up a two-way 20Amp toggle switch for the time being. I am wondering which is the harness that I would have plugged the factory switch into so I can wire up the temporary one?

So yeah, which plug is the one I want to wire my switch into? thanks for your time!

 

the one on the left.
i recently installed my switch and lights too.
just need a relay for it.