One problem related to windshield wiper/washer linkages has been reported for the 1999 Ford F-150. The most recently reported issues are listed below.
At highway speed (55 mph) the wind over the hood directs the stream of fluid from the windshield washers to land below the wiper blades, causing it to become completely ineffective. The dealer informs me that this is a design problem for which there is no repair.