[Solved] Volvo XC90 - replacement of the factory radio with another one

I remove the factory audio system from the above 2004 cars.
The client got a set of fiber optic connectors, a console frame and an antenna amplifier. On English-language videos with YT, they leave everything plugged in, the display is hidden in the console. The received set can allegedly disconnect all components connected by fiber optics, i.e. the radio panel, cd drive, amplifier, tuner with antenna in the roof.
I discovered from the display it is impossible to unplug because it is some kind of CAN node (green and white cables) - after unplugging CZ does not work, cabin lighting and the pillow error pops up.
The cables are on the go in display 1 to 1. Now questions to experts on the subject:
1. If I ensure continuity of this CAN line, can I eliminate the display?
2. Does the fiber optic circuit only close on these audio components (if I eliminate the display, you can skip fiber bridging)?
3.If the display has to stay, and I conclude that it is a master, it is not enough just to make a fiber optic loop from its output (short loop).
I removed the antenna tuner and after analyzing the antenna inputs I made a grommet with an adder / crossover that I connect to a universal antenna amplifier, with the antenna and from there I put the coaxial cable to the radio.
I think that it will be a smarter and more professional solution instead of gluing the antenna to the glass like in YT videos.
I am asking for help from subject experts

Hello, I see that nobody helped ... You got the answer to one of your questions, if so please help because I have the same task.

Yes, I solved everything myself. Info on priva.

According to our regulations, a solution should be given on the forum, not on PW.

3.2. The author of the topic, after receiving the answer that is the solution to the problem, is obliged to provide a summary with an indication of the solution and lock the thread by clicking the resolved button.

OK for everyone:

The panel can be removed, it is necessary to ensure continuity of the CAN line, for this purpose you need to short the green veins and the white veins in the green / white twisted pair, after which you can remove the cube from the panel. You can then get rid of the panel and the rest. Optical fibers run only within the audio components , you can also leave it or separate it and throw it away.
we make ISO current and speaker cubes, we take ignition and backlight from the panel cubes, we extend the speaker cables under the seat and connect to the amplifier cube.
I dragged the antenna + control cable to the antenna, removed the entire tuner module, I made the crossover sum of the antenna circuits myself, because there are two for VHF and one for AM, the signal from the crossover I immediately let into the universal car antenna amplifier (in the form of a tube like VAG separators) ). Through this procedure, the antenna behaves like other typical roof active antennas, the reception is excellent, it catches all AM and FM stations, even in the garage.

Hello. Could I ask for details of such a procedure, i.e. exactly with the drawing. I would gladly exchange the radio in my xc90 2003 for new non-factory ones.
greetings

I do not know what to draw, everything was written, determine the appropriate cables is no problem, for someone who has an idea about auto electrics / car audio. For the rest there are radio assembly service outlets.

Thanks for the answer. I think that after careful analysis I will manage. greetings

Welcome back. I am only at the stage of buying 2DIN radio. When I get to the car mounting, and I suppose it will be in the spring, if I have problems, could I count on help, tips?
greetings

Hello. How to make a crossover summing up the antenna / FM and AM circuits?

Diagram of my crossover. Disconnect the antenna foil cable from the tuner and connect it with the goldpin connector to the crossover board. I made it universal in 5 minutes.
Diagram of the connector and the crossover.

Hello. "close green veins and white veins in green / white strands" green with green and white with white or alternating green with white?

green to green white to white

Thanks a lot. greetings