How to Install an FM Radio Transmitter

1. Plug the audio cable that runs from your FM transmitter into the headphone jack on your device. This cable transfers the audio from your device into the FM transmitter so that it can then be transmitted over a short-range FM radio frequency.

2. Connect your FM transmitter's power adapter to a power source. FM transmitters designed for use with Apple's iPod electronics will plug into the USB port on the bottom of the iPod and use the device's battery for power. Other types of FM transmitter will plug into the power adapter in your car.

3. Use the control panel on the FM transmitter to tune it to the frequency of an FM radio station that your car radio can also pick up. Next, tune your car radio to this same frequency. Your FM radio transmitter will be properly installed.