MNH15 headunit change, front / rear camera mixed

[JayEll]

So I changed original head unit to Pioneer one and purchased adapter wires from incartec. Everything else works excellent but for some reason headunit is showing only front camera when in reverse and this is pretty useless.

 

I have only following(picture) connectors free. Camera connector currently installed has 4 wires and as per general discussions this should be for rear camera but in my car it apparently is not..

Blue connector in picture has also yellow/white wires but how to test if these are for camera or not?

Edited August 16 by JayEll