Never had it happen to me during the day only at night.. my sister thought one of them was out and I WAS LIKE WHAT?! and yeah it's the angling of the lights.
Front Passenger window sounds like a motor, and yes if they get wet they will work sometimes and then quit and then work again and then quit.. my mirror and lock switch did that to me on my Jeep Liberty. The Window Lock switch sounds bad but could be a ground issue there or possibly a fuse...
I like..I got to drive one for about a month while my KJ was in the shop for repairs.. I don't like the soft top ones though too noisy in the wind on the highway...but I have fallen in love with the new 10 JK Sahara Unlimiteds :D