Chandelier Wiring Issue: 4 Black Cables in Ceiling and Multi-colored Wires in Fixture

Hello, I bought a chandelier that can be lit 1 + 2 with cables (yellow-green, 4 blue, and 3 black), which are connected in a cube, namely one yellow-green, 3 blue in the other, 2 black, next and the last black to the last. However, when I took off the old chandelier, 4 black cables stick out of the wall: /. After measuring with the meter, two have current and the other two do not. After that, I connected the black ones with electricity in the ceiling to the black ones in the chandelier, and the remaining yellow-green and blue ones to those without electricity from the ceiling. I am happy to turn on the fuse and here, after clicking on the contact, only two bulbs are lit, so both switches must be clicked, otherwise it does not turn on or off. Do you have any ideas what is going on and how to connect this chandelier ??
best regards

First you need to determine which wires in the ceiling are phase conductors and which are neutral. Then check with the light bulb if you have recognized it correctly, i.e. that by switching on the 1st key, 1 bulb lights up, and by turning on the second key, the second bulb lights up.

With such a test tube in a screwdriver, I checked which two were current and connected the black ones from the chandelier to them

Added after 52 [minutes]:



These are the cables from the gyran, and on the wall 4 are black in which two have electricity on two

I clearly wrote:

stanislaw1954 wrote:

check with the light bulb if you have recognized it correctly, i.e. that by switching on 1 key, 1 bulb lights up, and by switching on the other, the second bulb lights up.

The bulb should be connected between one of the phase wires and one of the others.

Michael_004 wrote:

However, when I took off the old chandelier, 4 black cables stick out from the wall

How was the old chandelier connected?

zbich70 wrote:

How was the old chandelier connected?

The problem is that everyone mindlessly unfastens the old one, and in a moment the problem is what to do with the new one. Sure, often the old one did not have a cube with descriptions, as is often the case with new lamps, and the colors of the wires vary in old lamps, but it is always worth paying attention to the connection.