Took the B out for a short ride to see if my adjustments had made any difference.
Found a little knob on the right of the dash. Didn't look like a standard switch... wonder what it's for. Pushed it, pulled it..nothing. Twisted it and the wipers worked on an intermittent wipe. Wow I thought, that's neat. Trouble is, it doesn't matter what I do to the switch, they won't stop.
It was also the first time I'd driven in the dark. Light weren't that bright but not bad. Stopped briefly and when I tried to start it, the starter wouldn't turn. My wife was out so I rang my father in law and he came with a rope. Started easily with a short pull and drove home no problem.
More investigation to do now. I've been spoilt with the reliability of the TA.