Features:High quality Car 4 Channel High to Low Audio Converter.Used to convert high audio signal of the speaker to low frequency.Made of high quality plastic, wearable and durable.Easy to install, just use after correct wiring.Suitable for connecting the CD, radio, DVD, host, amplifier, of the original car.Wiring:Gray wire ------ Connect the anode of the host right front channel.Gray and black wire ------ Connect the cathode of the host right front channel.White wire ------ Connect the anode of the host left front channel.White and black ------ Connect the cathode of the host left front channel.Purple wire ------ Connect the anode of the host right rear channel.Purple and black wire ------ Connect the cathode of the host right rear channel.Green wire ------ Connect the anode of the host left rear channel.Green and black wire ------ Connect the cathode of the host left rear channel.Red wire ------ Connect the anode of the power wireBlack wire ------ Connect the anode of the power wire (earth wire)Brown wire ------ Connect the earth wire when there is noise, unconnect when there is no noise.Blue wire ------ 12V power amplifier control output wire (connected to the power amplifier control wire interface)Specifications:Condition: Brand NewMaterial: PlasticColor: BlackWire: 12pcs wiresPackage Weight: Approx.144g/5.1ozPackage List:1 * High to Low Audio Converter.Note:Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.