irrigation relay detail

The red and orange wires are from zone one and two solenoids. The red and orange are bound by the orange cap with a black wire running to the middle relay post. The green wire is for a non-existant zone three. The black wire from the 12VAC is bound with the white common by a gray cap. The red wire from the 12VAC is bound with a black wire to the left relay post with the blue cap.