Specific wiring for retrofitting the original electric swivel trailer hitch the cable set connects the 3 AHK plugs (2 x 8-pin, 1 x 5-pin) to the control unit all functions as installed at the factory suitable for the following vehicles: Audi A4 8W Audi A5 F5 Audi Q5 FY Audi Q7 4M Scope of delivery: cable set Notes: after installation, the control units must be coded using the dongle 42239 suitable cable sets for connecting the control unit and the vehicle: 42138, 42144, 42155 Currently, retrofitting vehicles from model year 2024 is not possible