xm radio

Just installed WXBB3 works GREAT.My question is: how and what do I need to listen to XM radio off the rear of the unit.It has pig tail with two alligator clips. :questions

what is meant by audio amplifier what do I need I have the service from Sirrus

The BBWX3 is sold as a weather receiver but the NN3D (only system that can at this point) can take advantage of any offered audio feature. You would normally connect the auto to an amplified set of PC speakers or the AUX in on your stereo.