Quote Originally Posted by EM1toEVO
XM ready means it is capable of acting as a XM "tuner" to receive and display the info. All you need, if I'm not mistaken, is the XM antenna mounted on your car's exterior and the monthly service activated.
NO,NO you need 3 parts ant. brain, and the cable to go from the head unit to
the brain!!

lmk if you need any help!!