I never got around to talking about the wires bit. Never mind, some days these things happen...

Anyway, so my idea is to have two DCC buses, one for each of the two gauges. A switch will allow joining both halves. In turn in each half there will be a point bus and a track bus.

A lot of this is future proofing, just in case my layout gets too big, I want to be able to include a booster should it become necessary. At the same time I also want to be able to operate one half without the other.

In a worst case scenario two independent controllers should be possible...

That just leaves a programming track. As the railway will be split gauge, I'll need two, but a booster doesn't have programming output... So working out the best way of arranging this is still under "ponderance"....