Enegg Inline Antenna Radio FM & AM Stereo Signal Amp Amplifier Booster for Car Audo, perfect for Both AM and FM Radio Stations Works for Both AM and FM Radio Stations. Includes Standard Motorola Female and Male Ends Simply connect it inline with your antenna and connect the blue wire to your power antenna lead or another keyed 12v source. Many of the Newer Audi, BMW, Mercedes and VW vehicles Come stock with an inline Booster similar to this one but they have European ends This is one reason that many European Cars have great radio reception, now you can have great reception as well