SITUATION: Anyone who wants to install in a VW (in my case Polo 6N BJ.2000) a foreign radio, knows the problem with the sometimes very poor radio reception. In various forums you then reads about phantom power etc .. This Phantom feeder / antenna adapter provides a very good solution to the problem and provides a noticeable better radio reception. Only downside is that the adapter needs to be accommodated in the radio housing, which is partly only possible with squeeze. The assembly is generally feasible and easy for lay people. TIP: For most VW has permanent plus and ignition are swapped (pin assignment note), since otherwise the radio and thus the antenna adapter for permanent consumers. I advise to swap the cable using a luster terminal, because it is also the installation of the phantom power and the possible installation of an original VW radio a breeze. CONCLUSION: Good product - good price - fast delivery (without instructions, what I wanted to achieve through the review) - recommended!