MacBook Core 2 Duo Inverter Cable
sorry, forgot a remark:
check the quality and spreading of the thermal paste. It´s necessary for a good contact between heating plate and sensor.
"backing" was the missing link to open it.
Thanks a lot!!
I used paper clips to lift the bottom (based on a video-clip by chaindriven, https://www.youtube.com/watch?v=p9xC9jnJ...)
Changing the polarity at the motor was easier for me than changing the pins in the connector.