lol firstly, its not business im tryin to get im tryin to help everyone else, i make about 5 bucks on the piece, secondly , the unit im offering is a hardwired unit, it uses the stock antenna, and a positve and negative... u set it to an unused radio frequency, an bam there you go....no radio fuzz and the radio still works properly, in addition all you see is two rca's for your audio input, ipod, dvd player, minidisc, etc...