PIE FRDN-Aux Factory Stereo Radio Auxiliary Aux Audio Input Converter + FREE 3.5mm to RCA Audio Cable
Very easy to install, and sound is crystal clear. It's also discreet, as it tucks away easily behind the factory head unit. You will still retain all factory functions. Just note that if you're getting this for a 2004 Cobra it won't work. The model section of the model number &#34;FRDN-Aux&#34; signifies that this is for head units WITHOUT an Auxiliary button, hence the &#34;N&#34; in FRDN-Aux.