Can someone just clarify what's been said in post now put pic up of the wires.
There are wires where I would expect to see them [terminals N L 1 & 3] as per my earlier post, which also tells you where they move to:
SCR N to T4R N
SCR L to T4R L
SCR 1 (Common) to T4R A
SCR 3 (Call for Heat) to T4R B