Same problem with my 2002 Eldorado but for the life of me I cannot identify a “connector" inside of the door panel. There is a switch on the arm rest which is easily accessed and a two wire connector on the motor, both seem fine. I have squeezed and filed, and framed and twisted both the switch and the 2 wire connector with no results. There is no nut on the arm rest panel and cannot identify a plastic connector twist. Moose