What is missing in this picture?
I am still learning my "new" MB.
Can anyone tell me what is missing next to the vertical fuse rack on the left hand side in the trunk?

Would you also know the part number of the missing part/device?
You can clearly see two connectors. One black rectangular and one blue round shape.
I attached three high quality photos for your convenience.
Thank you in advance,
Pitek
They wanted from me $125.99 plus (13% HST [tax]) up front just to have a look into my car's trunk. They are not friendly at all to say the least.
I am not a sucker!
I do not think that I will be back there any time soon.


