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Hello, from what the schematic indicates, the blower is a 3 speed. black for high, blue for medium and red for low speed. there is 5 wires coming from the tstat with 2 additional wires going out of the board as well the colors on the circuit board are marked as follows with the corresponding color wire:
Y terminal - yellow wire connected
W terminal - green wire connected
R terminal - black wire connected
G terminal - red wire connected
C terminal - blue wire connected
additionally there are 2 more wires coming into the board, a black and green (looks like they are going to the condenser).
the black wire is connected to the y terminal
the green wire is connected to the C terminal
My brother in Law is here now, he is a licensed HVAC technician, have a good day...