Alright. I felt that I should explain what happened in case anyone else has the same issue. Here is what happened.
After putting the graphs on the console in the wrong positions, I took the boat out and started playing with them. I had it in my head that one should be sourced to the transducer (SI) on the stern, and the other to the DI transducer on my Ulterra. I made the changes under the Sonar tab, not even realizing there was a Netework tab that was already set by the dealer. So, I set one source to the rear (SI) and the other to the DI from the Sonar tab (not the Network tab). That apparently threw them off network. My dealer’s Humminbird Tech called me today and walked me through fixing things up. He had me power the graph on the left side of the console up (8 inch DI SI) and then the other graph (9 inch DI). He asked me to power on the Ulterra and see if it flashed iLink on the graphs, which they both did. So, he said it wasn’t a power issue to the Ethernet port. Next, he had me go to settings and select Custom instead of Angler for User Mode. Then he had me scroll down to Sonar, which was set to off, and switch it to on. When I did, the Network tab appeared at the top of the menu. Next, he had me go to the Network tab on the graph on the right (9 inch DI) and select Network Source Setup. From there I had to set the 2D, DI, SI, and T1 all to the 8 inch DI SI source. So, it was user error. I had it in my head that the 9 would be reading off the Ulterra DI transducer, which now I know will only happen when I put the 9 on the bow and plug it into the Ethernet/Ulterra cords up there. I just assumed they would run off separate transducers, but now I know they are both sourced to the Stern transducer when they are both on the console. I have an Alumacraft Competitor 185 Tiller by the way.
Thanks for the help along the way.