[tripletdaddy]

It's not clear what kind of wiper problem you are having, but I will assume it is not working at all or not very often. It is not unusual for the multifunction switch to fail. You can open it up, clean it with electrical cleaner, but be careful, since I think it has a few small parts in it. I and others have found this to be a short lived repaired. Some have posted that they have ordered a new one online for much less than dealer price. Search in this and the Windstar forums to find this info, since that is where I have read this info.