Hi Pete,
Here is a photo of the cable end:
Regarding your wiper motor, have you checked that the linkage is not seized? I thought mine was dead, but turned out the wire cable inside the guide tube was a bit rusty and one of the splines which protrude through to outside the cab and join to the wiper arm was seized.
Keep a lookout on ebay for the acco winches, I've seen a few on there...
Here's my MK3 at the moment:
