Working on cleanup behind my panel and I have 2 separate terminal strips with wires coming into them tagged NMEA port 1 from chartplotter and NMEA port 2 from chartplotter. They’re not connected to anything at the terminal strips - each one is just dead ended at its own strip. Anyone have an idea why they would have been kept like this? Is it worth keeping as a backup in case N2K goes down? Or is it just leftover junk to pull out?