This is what the Raymarine autopilot says about NMEA connection.
Wire Colour Pin NMEA signal at s1000 Connection at 3rd Party GPS
Brown 1 negative out NMEA --ve receive
Green 2 positive out NMEA +ve receive
Orange 3 positive in NMEA +ve transmit
Blue 5 negative in NMEA --ve transmit
But the Humminbird NMEA connections read differently in the Humminbird manual:
The following NMEA sentences are output:
DPT - Depth
MTW - Water Temperature
GLL - Lat/Lon Position
GGA - GPS Fix Data
RMC - Recommended Minimum Specific GNSS Data
VTG - Course Over Ground and Ground Speed
ZDA - Time and Date
When navigating, the following NMEA sentences are also output:
APB - Autopilot Sentence B
BWR - Bearing and Distance to Waypoint
RMB - Recommended Minimum Navigation Info
Does this make sense to anyone?