1. Installation and Connection: Install the antenna amplifier in a suitable position behind the car's stereo system, such as near a DVD player or radio. Connect the ANT208 amplifier's socket to the male socket of the original car antenna, and plug the FM connector of the amplifier into the car's CD or DVD receiver. Connect the 12V power cable to the vehicle's ACC for power supply. 2. Wide Compatibility: The car radio antenna amplifier is compatible with most FM radios on the market. Note that our products feature circular interfaces—please ensure they match your vehicle's internal interface before . Verify that the antenna connector fits your car radio. 3. : The quality antenna amplifier is made of copper wire with low insertion loss, reducing or blocking background noise and minimizing radio wave interference. It enhances radio signals and reduces static. 4. Safe Operation: The waterproof insert ensures secure and tight contact, preventing poor connectivity and ensuring longterm performance. The amplifier can be discreetly hidden in the car, extending reception range and improving signal sensitivity for stable operation.