If you could post a picture of the wiring diagram from the plate on the pump I'm sure we could figure it out. I can't quite visualize what the diagram must look like from your description. The diagram on the pump might just have lines for the hot wires, they may or may not be clearly labeled.
There are many different ways that motors get wired up, and it varies with motor size and even across different production runs of a single model of pump. So you really need to go by the wiring diagram on the motor.
There are nearly always three wires, either (hot, hot, ground) or (hot neutral ground) coming into the motor from outside, but there can be anywhere from three to six terminals inside the pump. Sometimes the extra terminals are used as wiring points for components inside the motor any you never need to use them. Other times different terminals are used in different situations, ie screw terminals vs slide on connectors. Your two red wires are a standard 230 volt supply (hot hot ground).
