The wiring I believe you are referring to is for a windshield washer pump (for states that require it).
As for the fans I have done one setup (and if I ever do it again it will cost more
) but I fabbed up custom end brackets to do it. The Finishline fans "rails" took a lot of trimming. You should be able to get a feel for it on car #334 in our gallery:
http://www.vintage-motorsports.com/gallery/customers
