Hi and thanks for your advices.
There is my solution, where factory HU was removed.
I bought display assy for car version w/o factory radio (39720-SMT-G01 Display assy., (NO AUDIO), ~350 Euros).
This assy has different pinout and is connected directly to AC control.
It does not show radio info but has clock setup buttons.
The factory HU was removed.
Harness was made by myself
(thank my Honda dealer for wiring diagrams)
I installed Kenwood in my car two day ago.
It works!
Dealer checked my work and told me that warranty is not broken!
Next Monday dealer will install navi block, rear camera and handsfree.
Unfortunately, I didn't find Kenwood remote control wire/electric diagram and cannot make adapter for wheel control and didn't find online shop where this adapter is available
The result:
Hand-made harness:
New display pinout and my reconnect diagram (sorry for Russian, I can translate if you need):
If you have any questions - welcome! I'll try answer and help.
Thanks.