i recently installed the roush front bumper and a black billet grille that removes the foglights. is there any way instead of putting a switch for the fogs i can just use the harness that the oem fog lights were installed and hook the roush fogs up to them thanks for your help.

 

Yes, there is. That's how I have mine set up.
On one side I was able to remove the clip that held the harness in place and that gave me enough room to plug the factory harness directly into the Roush fog. (I'll have to look tonight to see which side it was.)

On the other side, I made an extension to go from the factory harness to the fog light. (there was no way I was going to splice into my factory harness) I made the extension from the wiring Roush sent with the bumper.

Oddly enough, I still have a picture here at work of what the completed extension looks like. Just look for those two connectors in your Roush kit, cut them out of the Roush harness and splice them together. Both connectors are labeled with an "A" and a "B" on each one. This will show you which wires to splice together.

 

Does all of that come with the bumper or do you have to order the wiring kit as well? The wiring kit I found is like $200 extra on top of the bumper. I'd like to avoid buying that wiring kit since I want to take my factory fogs out anyways and try to use that hookup. Also, I was wondering how to go about removing the fog lights and replacing them with a billet grill all the way across.
Thanks in advance

 

The wiring harness is part of the Roush front fascia kit.

If you are replacing your grille with a billet grille, the stock foglights just come out with the stock grille. (I'm not sure I understood your question) Or are you talking about the Roush fogs?

 

Thanks for the help. I found what I was looking for as far as removing the factory fog lights. Many are buying bolt over billet grilles where you take the factory fogs out but leave the factory grill in. That is probably what I'll do. I mainly wanted to make sure the wiring needed for the extension comes with the Roush bumper without having to order the wiring and switch kit.