hello, i have a 91 towncar. the forward/backward, up and down functions of the driver seat have quit working. i have checked the fuses in the interior, and under the hood. all appear to be fine. (i will go and double check again) i have any extra switch for the door panel and changed it out to see if that may be it. but it still doesn't work. also the memeory seat buttons do not work. they did when the seat moved, but not now. any ideas where to start what may be wrong? the passenger seat works fine.