wiring

I would like to know how the signals from the steering wheel controls are getting to their respective destinations? Here’s the issue: The radio controls on my D40 do not work of the steering wheel is in the “home” position (driving straight ahead) but do work of the wheel is turned approx 45°...

Trying to put back that three loose cables ,not sure in which slot ,was able to out stereo on with three loose cables plugged in in the right top three slots ,but there was no sound and I also experience battery issues ,please help and advice ☮ DT