i know, that somewhere in my Ford contour 1998 there is a seat heater, the question where is the controller to it.

I highly doubt your contour has heated seats. Those seats are found mostly in luxury cars and are just now starting to become an option for cheaper cars. If it does have heated seats the button would either be on your dash (mixed in with your a/c, heating and all that) or for some reason it might be on the bottom eft side of the seat it self. I do know that my probe is a 96 and has electric adjustable seats but i doubt there will be heated seats in a contour...

damn that's must be something wrong with the wire system or seats!! 0.o