I did the factory switch upgrade AND yes please post IF your dealer can get the dash indicator to work.
Ok, this might be a little disappointing, but the only way he said he could do it is if he had the fogs come on with the low beams. He said there's no way he could get the indicator light on the dash to work. He couldn't wire it to work with the factory switch either.
I don't mind it because I use the fogs a lot.
They come on with the low beams, off with the high beams and don't work with the day time running lights. Perfectly legal in Pennsylvania.
He said none of the wiring is there. There's no connector hanging there to plug the lights in. They don't build harnesses like that anymore. The harnesses are basically vin specific. If a connector is not needed for you specific car, it's not installed in the harness.
So, I guess, if you really wanted a switch, you'll have to run a wire through the firewall and use some type of universal switch.
But, good luck when it comes to the indicator light in the dash. Your universal switch will have to be one with an indicator light.
Oh wait, I just reread your post. You said you did the factory switch upgrade. How did you do that?