I was able to get out on the boat yesterday and play around with the toggles a little bit. I was able to use the "Display" button to change the #1 Digital Display (See attached image) and the "Speedo" button to change the #2 Speedo gauge (See attached image). But I was unable to find the button that will adjust the #3 MC Cruise Speedo display (See attached image).
I got the center (#2 Speedo gauge) to match my iphone speed app. They both say 20 MPH when actually going 20 MPH, but when I have the MC Cruise on (set to a crazy high # so it won't limit my speed for testing) to see the digital speed it says 30 MPH. Is there a way to change the MPH displayed on the MC Cruise digital display?