There are a few things you need to know before you begin the installation of an auxiliary port in a car. First, make sure that your car has an auxiliary port. If it does not, you will need to find one that does. Second, make sure that the auxiliary port is compatible with your car’s electrical system. Third, be sure to have the correct tools and parts available to complete the installation. Finally, be patient and be sure to follow all of the instructions provided with the auxiliary port.