Wires for rear speakers

[komichal]

I am finally back here.
The good thing is that I was able to trace down the rear speaker wires.
I removed the front seatbelt plastic covers and the wires are there. They lead up to the connector opposite to the rubber hose connecting the body and the door. So this is good (but I was unable to detach the connector though so I do not now if there are speaker wires in the rubber hose as well or if I have reached the end of the line).

What is bad is that when I removed the rear door panel and peeked in through the speaker hole I was only able to see the wires for door lock but nothing else. It may not seem that way on the picture but there is so little space in there that I was not even able to remove the black tape inside the door to see whether there is actually a connector or something else that would indicate that the speaker wires are there or not.

Probably as the next step I need to remove that rubber hose somehow to see what is inside. But it was already dark so it will be the next part of the story, if I ever dare to do it.

Pictures:
https://ibb.co/eUs0Jw
https://ibb.co/nDNNWG