Turn signal switch question

I have a book, "Mustang `1964 wiring diagrams" and I have a new 1964 taillight harness and turn signal switch. How come the wire colors of the switch do not match the wire diagram ? Diagram says I should have White/blue, green, green/white, orange/blue, blue, and green/orange.

What I have is 3 green wires, 2 blue wires an orange and a white. What gives and how should I wire the switch in ? Taillight harness, all wires are same color as diagram.
 
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