As well, visit Pioneers website and download the manuals for the radio you bought, go through the instructions.
There are a dozen different OEM radios, some might have the sirruis reciever built into the radio, others might have a seperate receiver unit.
This is the same with aftermarket radios, some have the satellite reciever built into it, others need a seperate unit to connect to it. Pioneer makes both, the manual from their website will tell you what you need.
As well, you'll have to contact Sirrus and switch the receivers on your subscription.
Antenna, you likely need at least an adapter, don't be surprised if the antennas are very specific and one antenna is NOT universal and your pioneer unit will need another antenna.
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