Hello. I bought a kit for cruise control for my A2 from China, I have mounted from the lever on the steering wheel and onto the control unit in the floor according to the explanation of YouTube, but I am left with a black cable that I find no good explanation for, Think there is a cable that will give power to the control on the steering wheel. Are someone here who can give me some help with this. I am aware I have to program the control unit when it is fully connected with VCDS Software.