electrical issues

2000 WJ Jeep Grand Cherokee 4.7l V8, When iginition is in the on position I can roll the windows up and down, the instrument cluster works as it shoul, but once I turn the ingition over and the engine starts the cluster goes dead and the windows no longer work. Also if I start the vehicle with the A/C off then I can't turn it on unless I turn the engine off then turn the A/C on then start it again. Its the same with the interior lights if I start the jeep with the doors open the lights stay on when I shut the door, I have to turn the vehicle off then open and shut the door so the lights go off then start it again. Have replaced BCM, alternator, battery, intrument cluster, and its still the same.