The boat that I am getting is a Thunderjet Rio Classic with a 6.0L 360hp motor the reason for setting up the NMEA is to save full cost when I am just cruising around the lake. So I am after the GPH more then any thing.

Humminbird does sell the AS ETH NMEA2K | Networking | 408390-1
“Conserve valuable fuel and anticipate problems with an at-a-glance view of fuel consumption and engine performance. View multiple gauges at once for the complete picture. Waterproof black box connects to existing NMEA 2000® network. Distributes NMEA 2000® data to all Ethernet-compatible Humminbird® units on your Ethernet network. Easily customize data boxes. View data for up to two engines and two fuel tanks. To use this product a NMEA2000® backbone is required. We do not sell these parts.”

The ONIX is NMEA ready so I wont be needing the adapter from you, But thank you for the offer.

I have watched a few you tube videos and it seems relatively simple to install. I just can’t find any were that shows the full view of the Humminbird sensor. And do you have to get a sensor for fuel consumption rate and a sensor for RPM resulting in multiple sensors or does one engine sensor do it all.

I have also purchased the ULTERRA 112 LB 60″ US2/i-PILOT LINK that is all ready compatible with the onix so I am pretty sure I don’t have to put it on the NMEA network.

At this point I don’t even know what I don’t know LOL