I am a dodge grand caravan owner 2001 model. I am having a problem with my door switch from front left door. I had an accident and needs to replace the door but the shop replaced a used door. He replaced the door regulator already, but the problem is the driver side window is not working the right rear vent window is not working and sometimes the lock on the driver's door is not working too, but all the lock in the passenger front and rear is working good, and the window in passenger front right door is working good too. what is the possible problem of my car? It was in working condition before.

 

Possibly he used a Door with the wrong options. you might want to try a new door wiring harness. do you still have all the old parts from the old door?
of course, inspect the door hinge connector on the body side, make sure it was torn up from the accident.

 

here's a wiring diagram. All you need is a test light. Test right from the back side of the window switch.