I'm so glad I found this after searching the whole internet. It was just what I needed to connect the factory SiriusXM antenna on my 2015 Subaru Outback with Harman Kardon to my SXV300 tuner. The signal is much better than the magnetic antenna that came with the tuner and there are no tangled wires in my car. I read that there are some models that were made without SiriusXM and therefore do not have this antenna. I've used SiriusXM with my factory head unit before, so I've had no issues with it. I've attached a picture, the SiriusXM antenna is the blue connector shown in the picture. If your connector looks like the one in the close-up, then this cable is for you.
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