1998 expedition rear wiper

my rear wiper is moving real slow when i put it on #2, but when i put it
on #1 it dont move at all, do anybody know what the problem is.. :sunglasse :confused:

The multifunction switch/turn signal was replaced twice on mine before the rear wiper would function properly.:shakehead

I have a better one for you guys, minre doesn't work all the time. One time I wahed my car and left the wiper off its resting arm. I noticed a week later that it wasn't working. Needless to say that something got unattached so my guess would be to take a look and make sure everything is connected properly.