Got the new alternator at last. (Put on Parcelforce 24hrs on Thursday pm, eventually arrived Monday 4pm!). Put a charged up battery on to start it up and move it to the 'workshop' (shed
). Tested at battery - 14.7 v. Looks like it was charging. Turned it off. (12.6 on the battery). Switched ignition on - no battery check light. Thought I should put new alternator on anyway. Balked at changing the drive belt(s), they both looked fine anyway. New alternator on, ignition on, battery check light on. Start engine, battery light off.
Possibly diode fault or intermittent fault on old alternator? (see also part 1 of this saga in 'What fault ...' thread) Anyway I'll get it tested.
Oil and filters change etc this weekend (if it dries up enough to lie underneath it.)
Have a good weekend all!