Yet more really useful info Rog.
Just one question, does this discovery alter the diagrams that you shared with us illustrating the mods you had done, back in May. I believe that in those, the fog relay coil was supplied from the sidelight wire (R/O 76).
Think Richard queried this at the time as to whether it should be driven from the headlights though consensus was that Morgan had adopted both methods over the years.
