One more NMEA question???

[GEEBASS2000]

Ok it took me a while but I got every feature on both the Honda NMEA tac and speedo to work other then speed. I run Humminbird helix units and I can read the Honda RPMS on the Helix and I get fuel level on the Helix so I know the Helix units see both the fuel level senor and the Honda NEMA output data. However when I set the Helix to "NMEA output on" and set the Honda NMEA speedo to "MPH GPS ON" I get no speed readings on the Honda gauge. How do you guys get your speed out of the gps and into the Honda gauges?????

[Hickory Legend]

On GPS is correct, for the data bars it should be SOG.
Never had an issue getting it to work.

Here is the manual for the gauges.

https://cdn.powerequipment.honda.com.../nmeagauge.pdf