All very simple, you have a 3 phase motor which you intend to use for a 3 phase generator, all rather standard for a wind generator.
It is a basic motor of 12 coils grouped in 3 groups of 4 coils.
Before you go too far be warned the power output will light a led and not much more, so dont invest too much time, effort and money into this thinking you will develop a battery charger as ...you wont.
Now to answer your question...... as with most 3 phase motors the wiring is either "Star" or "Delta" in the motor above it is configured as "Star" if you follow the tracks on the board you will find 1, 3, 5 are all joined together forming the centre connection of the star, you dont use these points but they do all need to be connected together.
You require to solder (not weld) 2 diodes to each of 2, 4, 6 (6 diodes in total) to form a 3 phase rectifier, this means each pair of diodes will have one diode facing one way and the other facing the opersite way.
Then you connect all the 3 cathode legs of the diodes together and all the 3 anode legs of the 3 diodes together.
The cathodes become the DC+ (positive) terminal and the anodes become the DC- (negative) terminal.
There you have it, your 2 wires output.
I would cut the tracks on the board so none of the other junk was connected as it might draw power, and the other junk is no longer needed, just dont cut the track between pins 1,3,5 or joint them together with a short strip of wire.
Pete.