Rectifier Trouple

[magoconnor]

Hello. 

So Im wiring up my 4 pin rectifier : www.racing-planet.de/regulator-naraku-high-output-ac-dc-4-pin-p-101911-1.html
The wiring is showned on the secound picture. 

1. pin : goes to the battery (dc)
2. pin : Is the yellow wire coming from the stator. Im getting little over 14 volts at idle.
3. pin : is the white wire coming from the stator. Im getting little over 17 volts at idle.
4. pin : Ground.

My problem is that I only get 6 volts from the 1.pin (wire going to the battery (dc). 

I have tried several rectifer's with the same result. 

Can any body explain to me what im doing wrong? 

[90GTVert]

Have you tried measuring voltage at the battery with it all connected when the scooter is running to see what it's doing there?