Specific cable set for retrofitting the original swivel trailer hitch (hitch) for Audi A4 8K, A5 8T, Q5 8R This cable set connects the AHK control unit to the central electrical system You get all original functions Scope of delivery: cable set Note: The wiring harness for the trailer hitch box is also required After installation, the control units must be coded by means of diagnosis We also invite you to receive an offer for the complete retrofitting of a trailer hitch