This is an AUX expansion cable that allows you to listen to music from smartphones like iPhones and Androids, as well as MP3 music players, in MF33S/MR Wagons and MG33S/Nissan Moco models that do not have an AUX external input. Simply snap this cable into the empty connector on the back of the genuine touch panel audio unit shown in the image. Touch the [USB] button to switch to AUX, plug the jack into the player (smartphone, etc.)'s earphone jack, and the music will play through the car's speakers. You can also listen to YouTube and Radiko from your car. The plug is a standard 3.5mm stereo mini-plug. You can listen with clear, high-quality sound without the noise and popping sounds that can occur with FM transmitters. The connector to be inserted is indicated by the arrow in the third image, right next to where the antenna cable is inserted. *The specifications are for the 1.5m black cable shown in the first image. Precautions for Use * In rare cases, the device may not work due to poor contact with the audio unit's connector. In this case, press and hold the connector's lock button while removing the cable, and then reinsert it several times to improve contact. Sometimes, simply moving the connector back and forth will fix the issue. * Do not pull the cord to remove the connector or plug, as this may cause a disconnection. Depending on the vehicle model, you may be able to connect without removing the audio unit. Search for "Suzuki car external input cable easy connection method" or refer to the URL page in the profile.