The US version of the PCCM is SiriusXM ready, comes with the cable that connects from PCCM to the Sirius Tuner(not included) Sirius XM SXV300V1 is the tuner+antenna, on amazon for 60 USD Tray is good for tuner, the Sirius antenna is best under the cowl, must point upwards There is NO buffering with this tuner you need a strong signal location.

7.1 For US only , Sirius install the Sirius adapter cable (included) under the yellow/green canbus Connect that one to the Sirius tuner (not included in the PCCM+ box)