I called Furuno to see if I could get some clarification on connecting the VHF to the chart plotter. Within seconds the problem was sorted. Seems using ‘A’ and ‘B’, in the Furuno documentation, instead of ‘+’ and ‘-‘ was appropriate for the writers. This confused me. I was able to get the VHF to catch some satellites while in the boat house. So I did not even have to get out into open water to test it. It works!
I made proper connections and put the dash back together – later in the day.
I wish this VHF had AIS – but it does not. The antenna supports VHF and AIS so I can upgrade this if I want to.
I sorted the C-Map ‘out of date’ problem. I stuck the MicroSD into a USB plug and stuck it into the laptop. I then created an account on c-map.com where, eventually, I was able to apply an update. Unfortunately; this still does not show a known danger rock among the islands in Tuwanek (Navionics does). C-Map is more likely to be used as a backup chart plotter with the tablet running Navionics being the primary. I may run both in unknown waters close to shore with the Furuno being on split screen with sonar. So its coming together.