OEM radio wiring harness

[schwamiknight]

Hello brains trust,
Im hoping someone could point me in the right direction of a colour coded wiring diagram of the OEM radio wiring harness for a 2014 mn
Previous owner had already replaced original radio with a cheap android system of which I cannot even find the brand, in doing so had already cut and spliced into the original harness leaving no indication of which wire is which.
I am installing my old jvc unit and through process of elimination have managed to power up and have sound, just can’t figure out the steering wheel controls. The jvc unit is the kw-m150bt.
Any help is much appreciated

[NowForThe5th]

The Forum Directory contains links to Manuals (online) for ML/MN, MR and MQ. These manuals contain complete wiring diagrams.