This FM Modulator allows you to add an external audio source to your vehicle's stereo system. Simply disconnect vehicle's AM/FM antenna cable from the stereo, plug the antenna cable into the modulator. Connect the modulator antenna cable to the stereo and connect the modulator power wires to the vehicle's 12 volt power.
The modulator offers L/R audio inputs.
Other items you may need include, 3.5mm stereo "Y" adapter (3.5mm to L/R audio cable) and antenna adapters to match your specific vehicle.
Once your installation is complete you'll be able to listen to your MP3 player, satellite radio or other external audio device through your vehicle's stereo system.
Got everything , they came separately is all.
I'm so excited to have these, it's going to be a huge help in the operation of my semi.
Dennis S. Dennis S