My wiper stops randomly when I shut it off. Also in intermittent mode, it only goes about a third of the way across the windshield before it stops. High and low work perfectly. It doesn't seem like a mechanical problem, but rather an electrical one.

The kicker is that I've changed both the relay and the stalk. I used the relay from my w124 that is known to be working, and I bought a stalk on ebay, which could very well have the same problem, but looks way less worn than the one that I changed.

Are there any other possibilities? Is there a contact on the mechanism that tells it when its in the correct position that maybe I could clean off? My problem is all over the internet, but it always ends up being the relay or the stalk.