So the trunk mounted antenna has two different AM/FM plugs. One round, one square, as pictured. There are no public-facing guides that show which I need for a 2009.

Opening up the back is a huge job. I want to get my part correct before I do the 3-4 hour job. Help?

The gray plug is for XM and is the same on all. The dealer says they are the same throughout the model years, and they're not, so my VIN doesn't seem to help.

WHICH OF THESE AM/FM connectors IS FOR THE 2009 G37 CONVERTIBLE?


Thanks!

 

Bear with me as I am trying to visualize your photo and compare it to the Factory Shop Manual wiring diagram. What connectors are on the TRUNK/DECKLID side?

Are there three (3) connectors in your photo?

The GRAY (in the background) should be AM/FM.
The BLUE FAKRA should be XM/SAT.

I am still looking for the BROWN connector.... not seeing it, yet.

For reference: G37 Factory Shop Manuals Navigate to your car and download section AV, though I recommend downloading the whole manual. Pages 321, 325, and 337 are wiring references for the antenna base.

 

Where are those connectors in your picture? I found this pic on ebay; 2009 convertible antenna with only 2 connectors. As ILM says gray should be radio and blue sat. Hope that helps.