hi,
i have a 14 seater transit minibus and the wipers will not move in the front and they wont stop at the back of the bus when i turn it on. what could be the problem?
If not a relay (which I suspect it might not be) try the fuses. There is usually a diagram on the inside of the fuse-box cover. Check anything that says "washer" or "wiper".
I had a similar problem with a car last week. There is usually more than one fuse in the wiper / washer circuits and they all seem to work together, if you know what I mean.