Sorry about the sideways pictures. Glad it was helpful tho.
One last thought, I ran clean dedicated power from the battery for every individual item. 1 for each graph, 1 for the megalive transducer, one for the network hub that I located in the forward compartment. I just kept reading about interference and power issues, and everything I watched recommended it.
10 ga, tinned, marine grade. I set up a terminal hub next to the batteries. Used heat shrink marine terminals. Overall result was a very clean setup, pulling the lines was a little challenge but definitly do-able.