How can I add aux to my car stereo?
If your stereo has RCA input ports on the back, you can simply purchase an adapter cable that will plug into the RCA port and your music playing device through a 3.5mm male cable. Many cars came with ports for CD changers.
Can you put an aux in a car that doesn’t have one?
If your car doesn’t have an aux input you will need an FM transmitter. Typically these plug into a cigarette lighter socket and then you can connect your device either by a cord or Bluetooth.
Is aux better than Bluetooth?
In short, aux cables are better at providing a superior sound quality when compared to Bluetooth. However, it’s probably not very noticeable unless you are an audiophile yourself.