A pic of the signal lights in their normal position
That red lever switch (near bottom) is triggered by the turnout to change the lights.
The wood to the left of the siding is holding the air piston.
And the final pic.
The turnout thrown to allow the engine to go straight into the new shed.
The Green Signal is now on the left (straight) siding.
I centered the building over the tracks after I took the last picture