My first guess is it has 4 coils and a tach.
Test each pair of wires for ohms. The pair that tests different is the tach. Ignore it.
That leaves 4 pairs, and 4 coils. It is an 8 wire motor.
Now it gets fun. Choose a pair (A) to connect to all 3 (B, C, D) others and test voltage output into a 500 or 1000 ohm 1 watt resistor. Then switch around the ends of B, C, and D.
There are 2 matching pairs, say A and B. And C and D.
A matching pair connected in series will have the highest voltage. If one coil is reversed, the voltage will be near 0V.
Then there are 2 seperate generators in the motor, and they need rectified seperately.
Rectified to DC will be about 7.9VDC open circuit. The amps will be very low.
G-