Quote:
Originally Posted by Thongpocket
The one on the right is def sat radio harness.
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No, it's definitely not. It's a reverse antenna adapter that fits the radio's AM/FM antenna socket. Converts to a Motorola socket (I've confirmed that from other pics I found).
That portion is identical to a Scosche reverse antenna adapter (minus the extra branch with the black rectangular plug):

Here are a couple of pics of the factory AM/FM antenna plug in the FR-S:

(posted by Juanito08 in his journal, here)
and...

(posted by Nitro in his install thread, here)
On the adapter Robbie found, the portion with the 10-pin power/speaker plug/socket simply passes all but one of the wires straight through (pin 1 to 1, 2 to 2, etc.), and it changes how the power antenna control lead is wired.