Cable set for retrofitting the original PDC parking aid on the following vehicles: Audi A4 B6 Audi A4 B7 Audi A4 8H Cabrio This harness connects the PDC controller to the central electronic module and the horn Contents of delivery: Cable harness Notes: To use all the functions of the rear PDC system, you will need two further cable sets: The AUDI A4 B6 is equipped with PDC at the front and rear