I have a 2009 G37 and the connection where you would connect the RCA cables and the ipod adapter does not seam to be working i have tried numerous cables and nothing I looked at the fuses but cannot find a fuse for this.

 

Quick question because I am having the same issue. Of the cables that you have tried, was one of them from Infiniti? Mine quit working so I bought a cheaper aftermarket one and that didn't work so I thought maybe it needed to be from the manufacture. Haven't made the purchase yet, wanted to see if you had tried that. Thanks.