The headlight wipers on my 95 E300D don't work properly. They don't stop in the horizontal position and sometimes one stops working all together. They used to work fine. I've hooked up 12vdc to both motors and they'd run all day long. Makes me think it's the relay.

Do failing relays cause intermittent problems or do relays just fail outright?

I'd like them to work, or at least come to rest someplace other than in the middle of the headlight.

New relay in my future?

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2009 E320 Bluetec 117,000
1995 E300D 306,000 Sold
1996 Ford Taurus LX 130,000 Sold
1985 300TD Still 225,000 Sold
2016 Ford Fusion 24,900