12 Speakers Sony system wiring diagram needed

Thanks, but the wiring does not match my connectors.
On the C240A-24Pins, I have just the pin 1, 5, 8, 11-13, 15, 18-19, 21 and 24. If what I found is correct, there are no pin for the rear audio speakers.
More problems with the C240C-16Pins. The active pins are: 1, 2, 4, 5, 9, 10, 15 and16.
On the C240D they are 1, 2 and 5.
This system has a Sony amplifier in the back of the car and I think it is serving the rear speakers and the center speaker, front and rear but whit no wiring diagrams everything is hard.

Hi Joe,

Thanks a lot for your help.
I checked the pics for schematic 320559. For the connector C240A we are kind of good because all the pins connected on my connector car have the same colors.
The problem is with the connector C240C. Colors match for pins 15 and 16, but the schematic reports pins 1, 2, 4, 5, 9 and 10 not connected and the pins 5-8, 11, 12 and 14 connected. This is the exact opposite of what I have.
I do not think I have the connector C240B and the 240D is wrong too.

Looking online, what I have is also called Premium Sound with SYNC, no Navigation system. Is there anything like that in your schematic?
Because there is an amplifier, I need to know exactly which wire it is to avoid blowing everything up.

Again, thanks a lot for helping me through that.

Thank you, Joe, thank you.
We are far away from what it should be, and I understand why there is nothing on the web for that. I'll try to map the wires in the car, it will be a pain.