I have an 03 E (EX) Did anyone came accoss after installing a aftermarket double din monitor dvd, that they needed an Antenna Adapter? I will be installing a Valor DTS-660WT and I am trying to get all the material ready for the installation. Thanks

http://www.crutchfield.com/S-lEl4Zb7I20o/App/Product/Item/Main.aspx?I=12040HD10