Pulling the liner down is typically a pain (unless it is magically easier in the Contour for some reason). I personally wouldn't mess with that. A better approach might be to extend the power cord (pretty much any kind of wire will work....probably want to use 16awg or 18awg) and just run it down the side of the car (hiding it behind the plastic molding pieces and then running it under the trim pieces on the floor).
