I'm having an issue with the Yamaha Command Link on my new to me 2016 Fisherman 209. Basically it shows mph and fuel flow at low speed most of the time. However at speed it doesn't show either. Do I have the settings wrong or is there a connectivity issue? If connections is it most likely on the chart plotter or the unit itself? I can just reach it from the hatch in the head in the center consul but not see it to check wires. It looks like to reach it the best way is to remove the switch panel on the front of the consul? Thanks for any advice.