Between the t-connector and the cable that is fixed to the fan is a second connector in a plastic housing or so.
Did you mean this one? I assumed that it was some kind of noise suppresion inductor that the cable just loops through.
![[Linked Image]](https://dl.dropboxusercontent.com/s/jjh0vdsqq9ye58e/inductor.jpg)
Yes Roger,
You mean something like a ferit core to reduce interference? You are right, it does look like that!
Thank you again for your quick help and **again** for the right foto!!