Problems with my 01 ford windstar

I have had my van in the shop twice for this and they cant seem to find anything wrong with it which I know theres something wrong, After you shut the van off and open the door everything is suppose to shut off and stay off well thats not happening , the radio and wipers still have power to them when there should not be any power , does anyone have any idea what it could be.
Thank You

It is a relay. This problem happened a lot in some other Ford's, I don't know which one it is in a Windstar.