Humminbird Helix 10 G2N – Standard Horizon GX2200 AIS

Hello,
I have nice puzzle and I need some help;
I bought the new Humminbird unit Helix 10 G2N at the beginning of the last season; also bought Standard Horizon GX2200 AIS/GPS with a Garmin TR-1 autopilot;
My goal was to use the AIS data from the STDH unit plot into my humminbird unit; but also use the Humminbird unit to plot and send information to the Autopilot system;
After lot of reading and exchange with Humminbird, I understand that I need a Multiplexer to have all theses device working together; So I bought Imux;
I’v been trying to get it work all last season and there is something that I am missing because it doesnt work;
Anyone out there had this experience ?
thanks all for your help!

Attachments:

1. 

   File_000-2-e1516658419861.jpeg
   

2. 

   Imux.jpg