2002 Dodge Dakota electric window cable

Yesterday my front passenger side electric window quit operating. At first I heard the motor but the window did not move. I removed the door panel and found a semi-circular plastic part that looks like half a pulley lying in the bottom of the door. Based on looks, I'd say the cable runs over the part where it changes direction. Because of the way the door is made, I cannot see where the part belongs or if it is just a matter of putting it back in place. Obviously the cable is not going to do its job if the part is missing. I did check and power is coming to the switch and the switch checks positive for continuity in the two directions. I'm wondering if I can just get the part and cable back in place to see if anything works. I have been unable to find a photo or diagram of how the window mechanism works.