Is there a way i can connect my iPhone 6s to my car speakers?

Is there a way i can connect my iPhone 6s to my car speakers?

Aux cord or take charger and plug it in

Turn on the bluetooth on both your phone and car, if your car doesn't have it it might not able to connect unless their is a aux cord or something

If your stereo has a line-level (aux) input,
connect the headphone jack on the phone to that.

Otherwise, get a CCrane FM Transmitter-2.