Anthony C-
First off,
Second,
here is a link to a Google search of iRV2 posts using the phrase "coachmen cross country brake controller."
Here is a link to the same search, without the "cross country."
Based on what I read, it's likely your coach comes with factory-installed brake controller wiring.
The chassis builder usually supplies the brake controller wiring. You could call them. NOTE: Some manufacturer's customer support folks do not know their product line well enough to tell you correctly whether or not wiring is there, or where to find it.
Finally, you should add a signature to your iRV2 user profile. It tells everyone specifics about your coach, and is appended to each post, so you don't have to put that information in each post. Instructions are
here.