Last week my depth finder (Hummingbird Helix 7) stopped working. Sent it back to Hummingbird and started looking into power supply and found a mess of wires under front deck going to the unit and found out instead of running a dedicated power supply to the unit the dealer just tied into the front running light wires. Can I use 12awg wire that is not marine rated or should I waited for some marine rated wire to be delivered thru shipping process? The light supply wire was 16 awg if it matters.
Thanks, Jeff