Thank you - I've actually bought a new alternator (a smidge over £50 from the MGOC so seemed a no brainer). I'll fit that tomorrow (in between all the forecast showers) to see if it cures the 'second' problem above.
Fingers crossed I'm just left with the first problem (the wiper/washer glow).
Testing is a litte difficult as I've got to remove a fair bit of dash and dials to get to the back of the alternatior lamp and associated wiring, and the battery is under the rear seat. I'll see what I can rig up.
I'm embarrassed on behalf of the previous owner to post a picture of the current fusebox, It's so bad I've been put off from trying to fix it as it's currently working but I think that it lies at the heart of the problem!
![[Linked Image]](https://tm-img.com/images/2025/02/07/IMG_20230507_182955.md.jpg)