On my 2019 Impact I reached up under the dash, ran my ethernet cable up thru the opening to my Humminbird.
Then I ran the cable down behind the “wall” where my feet are ( on my boat there is an opening there to a lower compartment. When I take my rods out of the center rods compartment there is another panel I lift off and that’s where my batteries are.
I can see my ethernet cable down there and then I run it to the black hose with yellow cord ( like in your picture) I tied a string around the yellow rope end and pulled the yellow rope down into the compartment where my batteries are until it came out of the black hose – I taped the Ethernet cable tot he string/yellow rope and pulled it all up into he bow