Shaun,
You got Etka? Go into Rocco MY 10 and search on RNS. Go to page 0-35 illustraion 00-35. Item 5 is the RNS 510.
Then click on it and click on the Right icon in the addl info and look at the repair parts.
I think it is the 26 pin connector with cap? 7L6 972 726?