So, on Friday afternoon he removed my original regulator and fitted the new one; a reproduction unit that looks exactly like the old one but made of newer materials. When he had finished, we went for a quick spin around the block and it appeared to be working as a regulator should.
And, if I may say so myself, I performed superbly. The new regulator worked as it should, even coping with a spell of rain requiring the windscreen wipers to be used. In fact, the rain was quite heavy for a time but the new regulator meant that my battery could cope with the extra load and the new wiper blades that Murray had fitted recently meant that he could see to drive.
It was a great day out; it is such a shame that this problem was not resolved before last weekend so that I could have enjoyed the Spring Run.
Murray still thinks I drink too much water: 2.5 litres for the trip today.