Adding fog lights 13 A6
 

I hope this is the right place for this. I want to add stock fog lights to my 13 A6. My question is, is the wiring there and you just need to replace the light switch and change out the inserts in the bumper and add the lights and the wiring is all there? or is it a different harness. I know a lot of cars I have had have the wiring there you just have to add the parts.
Thanks,
Eric