Installation of power box (where is the turbo/boost pressure sensor)

Hi all,



I'm trying to install a power box into my BMW X6 E71 35D. The power box cable has two connectors.

1 For which has to go on the fuel rail. This one is located in the front, I found the connector easily.



The second connector needs to be looped through the boost pressure sensor, which i can't seem to locate....



Is there anyone out there who could help me? What do I need to disassemble and how?



Below a link with the picture of the cable. The lower left image show the connector for the pressure boost sensor, which i can't find.



Cable



Thanks alot!