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A little while ago I noticed this black thing stuck on the windshield - behind my rearview mirror. There are wires coming out of it going into the headliner.
This is an illustration from the Sirius/XM install guide. I think it answers your question.
Thanks.
But this makes me wonder why I have a shark fin since thats whats supposed to hold the XM antenna. So my shark fin is all for show? lol or is the AM/FM antenna up there?
do you mean the little box next to the rv mirror mount? it is the gps for your nav system, i look at the different IS which don't have NAV, so they don't have that little box.