The brain box for a Ford Contour is located in the front interior panel of the car however you should not access it unless you know what you are doing.
IO assume that by "brain box" you mean the vehicles on board computer. Typically these are located under the dash on the passenger side. Either behind the glove box or the kick panel.
The 1998 Ford Contour brain box, also called the engine control unit or control module, is located under the dashboard on the passenger's side. You will find it behind the kick panel.
