Hi

Ok who wants to take bets on what it was ?

Yeah ok it was voltage drop.

I checked the 3 connections that could have been the source of a short,
nothing wrong.

So I moved the transformer roughly 15 to 20 meters down the line which
makes the circuit resemble a Y. I am getting around 10V on the first
couple of lights and around 7V on the last couple.

Much better, not ideal but much better.

Thanks very much for all the assistance.