2004 Honda Pilot Windows won't work as well a rear window w

This problem started about 4 weeks ago. The windows (all) did not work. They would not roll down or up. The back wiper also stopped working. The pump that sprays the fluid is working but no wiper. The other odd thing is that the door will lock by themselves and various times while driving. You can be going along and all of a sudden the doors will lock and continue to lock and then it will stop. Last night it was raining out and the rear window wiper would not work. The next morning I tried the wiper and it worked. I tired the windows and they worked. The next day I tried the wiper and it didn't work as well as the windows again stopped working. The door problem seems to come an go. I will lock the doors and continue to lock the doors for about 3 or 4 minutes and then it will stop trying to lock the doors. After about 15 minutes it will try again to lock the doors all by itself. Sometimes it will not try at all to lock the doors and work the doors. What I would like to know is there some common point between the windows, locks and the rear wiper and where do I look to solve the problem?