[Telegraph Poles]

8 hours ago, wenlock said:

Thanks for looking, I spent ages looking through my book collection and as you say the wires are hardly conspicuous!

I found a couple of modern high res pics of the box at Highley which helped, along with more advice from Jim Snowdon.

This photo of Craigellachie cabin confirms the way you have led your wires in Dave. Incidentally, I have part of one of the cross arms from this particular pole!

[Telegraph Poles]

Very good! As a member of the TPAS it's good to see a realistic model installation with detailed attention to the subtleties.