Octavia MK1 K-line

Hey. Been a while since I was here last time *cough* pre covid *cough*. I am changing my stereo, and having searched the whole forums (including Ross-Tech), going to embarrassingly ask on where the K-Line is. It should be a grey wire on the black plug, but I do not see any of that. Someone wrote blue wire or blue and white. The blue and white was not connected to the ISO adapter, so I've separated it for now. I would appreciate if anyone can take a look at the picture and explain what the wires actually are. Thank you 😄