I got mine from the first place you suggested. It worked fine for a little while, and then slowed down, and slowed down, and slowed down, until finally it didn't work at all. You can still hear the motor trying, but the wipers don't move. All the linkage is still correct and all, motor just gave up.
Stupid question. Did you moisten the glass with water while running the wiper motor?
Here is what I have run into with wipers on these trucks. They don't work on dry glass, and probably didn't when they came off the assembly line.
Add to that the fact that the reproduction wiper arms have springs in them which are too strong for this application, adding too much friction. They likely use springs from more modern vehicles, I'm guessing.
Carl
