Thanks again Fred.  I don’t think I’ll be able to do what I was hoping. Bellow 
is a summary from the B&G manual.  It’s a circa 1999 H1000 system.  I was just 
going to connect the wires and see what data is available - maybe I have a 
newer version than detailed below (don’t crush my dreams!).  All of this is a 
bit greedy - just trying to eliminate one display head from the helm.  Really 
don’t want to spend the boat dollars on a new AP and I need another project 
like a hole in the head.

John


NMEA output (transmitted) summary


NMEA Sentence


Message Description

DPT

Transducer Depth and Offset

GGA

Global Positioning System Fix Data

GLL

Geographic Position, Latitude and Longitude

HDG

Heading Magnetic, Deviation and Variation

HDM

Heading, Magnetic

HDT

Heading, True

MT W

Water Temperature, °C

MWD

Wind Direction and Speed (TWD °M / °T and TWS)

MW V

Wind Speed and Angle (AWS and AWA, flag set to R) 

RMB

Recommended minimum navigation information

RMC

Recommended minimum specific GNSS data

VHW

Water Speed and Heading (°M / °T)

VLW

Distance Travelled through the Water

VT G

Course Over Ground and Speed Over Ground

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