1/8" to 1/8" Mini Aux Cable allows for connection between the output (standard headphone plug) of most SIRIUS Radios or other audios devices to the MP3 or Auxiliary input input on many newer car stereos.
It also will work with any SIRIUS boom box with an auxiliary input like the Starmate Boomcube. In order to work in vehicles with MP3 player or Auxiliary (AUX) inputs on the car stereo, the input must be a 1/8" headphone type input.