Hello Brians,
many thanks for your replies and the useful info. Many years ago I had to push a TS150 14 miles home as the regulator had packed up so I decided to have a fiddle with that after rechecking the battery earth – Bingo, everything worked after I’d gently moved the mobile switching points, so I’ll be fitting an electronic regulator, which I bought for a TS125. Do you know if there is any reason not to fit it to the ES250/2 as they are both 6v?
Cheers, MikeJ