Much wonderfulness. There was rejoicing in the streets of Harlow this morning.
I now appear to have fully functional wipers, thanks to the wonderful how to, and David Askew's supply of a new mechanism. Not a bad piece of work, but very glad I made sure I had a wiper arm puller. The passenger arm came off OK, but I had to put a 32mm spanner on the hand wheel of the puller to get the driver's off. *Probably* cos of the strain of still having them pressed against the glass.
Looks like my mechanism was actually broken. The OS mount point was broken, so that wouldn't have helped. The motor is good. I'll clean it up, re-lube and post it up if anyone needs it.
It's all wonderful. I'm just itching to go out, now!
C