I have a 2004 grand cherokee with 200k miles and the rear door locks along with the hatch do not lock or unlock with any device. Neither the remote, driver door control or passenger control, lock or unlock them. All windows work from any control and lights come on if any door is open including the tail gate. I have replaced door wiring from door to body on both side due to the infamous bad power and ground. Any help would be greatly appreciated. I have used a good passager side control unit and the same thing happens.