question: 07 Santa Fe radio

Quick question regarding the 2007 Santa Fe stock radio.
I ordered an Audiovox FM Modulator as it appears to be about the only viable way to hook up and ipod/mp3 player.
When pulling the radio out, if I disconnect/reconnect the harness, will the radio need a code to work again?
I will most likely have to tap into a 12v switched power source... I'll know better when it arrives....
Thanks & B'rgds,

Uncle Vinnie
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