How do you attach the shark fin antenna on an Audi A3 to a Sirius Starmate 5?

To attach the shark fin antenna on an Audi A3 to a Sirius Starmate 5, first ensure you have the correct adapter cable for the Sirius unit. Remove the existing radio or trim panel to access the wiring. Connect the shark fin antenna's cable to the Sirius Starmate 5 using the adapter, ensuring a secure fit. Finally, test the connection by turning on the Sirius unit to confirm it receives a signal.