.If all you’re doing is adding a 360 transducer, you might be fine splicing it in to the power. That power wire is likely just behind the trolling motor plug plate. If you have an Ultrex with a Minn Kota heading sensor, I suspect its power is probably spliced in there too, so that’s starting to be a lot of sharing.
I just added a second Helix and Mega Live to my Classic. Not sure which boat you have, but on the vision line (Classic) they only pulled 1 pair of marine 10ga to the bow from the factory. Single Helix 7 and heading sensor were spliced into the same power. I pulled dedicated marine 10ga for everything individually to the bow from the stern. That’s 3 more ‘home runs’ from bow to stern. Kind of a pain, but I fished all the wire in about 2 hours. I added a bus for all that in the back compartment, ran a separate 4ga power to the battery for the bus. You’ll have a lot less issue with interference/unit performance going dedicated clean power.
