The single-wires are too short for A4 B9, you'll need to make it longer on your own. No instructions included. After asking the seller for instructions, I've just got a very bad photo of 3 lines of text - which color goes where, but that does not help much if you do not know where these connectors are located. No photos, no instructions about disassembling the center control console. No clues where is the BCM and which connector is the 54-pin connector... I'll write here again if I get this thing working. I still need to prolong the wires to get to the fuse box.
Everything works perfectly.