Installation of control buttons on the steering wheel Toyota Corolla

The buttons sat down normally, the backlighting of the buttons is yellow, decent quality for this price. Some other additional connector was also removed, I still did not understand what it was for, I removed it so that it would not interfere and not rattle in the steering wheel.

I removed this piece of wiring, it is clearly superfluous.

From the radio I have two groups of wires coming out to the steering wheel buttons. One of them is for sound control, channel and menu switching, speakerphone.

The first one was connected to an existing connector, an adapter with this connector came with the cassette recorder. And the second (CAN), as it turned out later, is not needed.

These 2 wires (yellow and green) come from the right buttons on the steering wheel (speakerphone). Having smoked a forum, I learned that green is a mass of LEDs on the right buttons. Later, I threw it on the ground, the buttons lit up, and the yellow mass of the DISP button.

Outcome. It remains to connect the DISP button to the tidy, so that they do not reach for it when you want to see the readings of the bortovik, but control it from the steering wheel.
Issue price: 5,500 rubles