See how the white wire is stripped, hooked and wrapped under the screw? In the case of this first picture, they stripped off a wee bit too much of the insulation. You just want enough bare copper to wrap around under the screw head and pinch it a bit.
http://www.chiefdelphi.com/forums/at...d=121714098 6
It should look more like the black wire in the second picture when you get done, but remember the wire wraps around clockwise so that the open end is to the right. Don't leave too much bare copper, and don't pinch any insulation under the screw head.
http://www.chiefdelphi.com/forums/at...d=121714131 4
The point of doing it clockwise is that screwing it down will tend to close the hook on the wire, thus making it more like a ring. You can pinch it with pliers a bit before you screw it down, but it has to go on such that the open end is pointing in a clockwise direction. Otherwise tightening will make it splay out and possibly make a bad connection.