To play music on your iPhone or iPod touch via your car stereo, connect the devices together using a 3.5mm mini stereo audio cable (not supplied).
The turn-by-turn navigation instructions and music are then played over the car stereo.
Hands-free calls are always played over the car kit speaker.
I hear a noise when playing music over the car stereo
In some car models you may hear a noise changing in pitch or intensity when you accelerate. This has to do with the way the power in the car is wired. It is also known as “ground loop noise”. The easiest way to solve this is by using a special audio cable that reduces the ground noise, such as the Griffin noise reducing audio cable.