2000 Explorer Sport 4wd 4.0 V6

My girlfriends windshield wiper on the passenger side stopped working. I don't have a Chilton or Haines manual for her vehicle so can anyone tell me how to fix this?

I am assuming the linkage broke as the driver side still works.

What is the easiest way to get at this I looked up under her dash and it doesn't look like i can get to it with out ripping a bunch of stuff out?

On a different but related issue her wipers before and after the passenger side one broke would some times not work they would stop and start and not come on at all. Is the fix for this to replace the turn signal, high/low, wiper arm assembly on the steering column?

Thanks