Windscreen Wiper Failure

[MikkiJayne]

If there was no resistance to moving them down to the park position then either the linkage has come adrift from the motor, or the motor internal gears have disintegrated. They should be uncomfortably stiff (like 'ooer is it going to snap something') to move manually.

Often as the linkage wears the wipers over-sweep which tends to make the marks on the windscreen trim. Sadly all of this stuff is NLA for the D2 now I believe

With the bonnet open and the driver's side scuttle trim off you should be able to see whether the linkage is moving or not when you run the wipers. Have a look at that and go from there...