Originally Posted by Lostyankee

You can allways take the inner door panel of the other front door & look at it's design.
I believe that is a slider. Without the slider, there should or may be a 'clunk' as switch is pressed from up to down.
When you assemble the regulator, look at the door weep holes & make sure they can drain.
Also the lub. un the slider is important in cold weather. I use Lubrplate. Any good engine shop has this & will give you a dab ... you don't need a lot.
Also look at the regulator gear. If motor forces the window till gammed, the regulator teeth often strip. Sometimes the regulator frame cracks making the gears missaligned & a strange wear pattern.