The wipers are on and "work." Well, as I understand it this style wiper never really worked well, they have a tough time staying synchronized and I believe what they would do best is smearing dirt not cleaning it off....we'll see!
The one thing that stumped me for awhile was the wiper knob. It didn't seem to turn far enough. Then my 21rst century mind finally realized that these are single speed wipers and everything made sense.