There ya go. Just simply unsnap the panel to the right of the glovebox. No tools needed. You can see my two camera wires. One is coming from the rear bumper and heading toward the MyGig. The other is going through the metalic firewall, has duct seal around it, thats going to the front bumper cam. Just do as others have suggested, take something to poke a whole through the foam. Mine is covered by the duct seal.

 

I just used a long a$$ screwdriver to poke the hole! As in this photo.