radiojon
New Member
Just bought and installed a simple Garmin GPSMAP 431 model chartplotter and read previously that it was a simple two-wire connection into the SmartCraft speedo. However, when I pulled out the dash today, I saw that the speedo (and tach) connections go into a 6-way junction box. The previous instructions I had read let me to believe that there would be two blue and white wires just "hanging" off the back of the speedo.
So how can I connect the necessary Garmin NMEA 0183 wires into that junction box to interface with the speedo? Or is that not even possible? From what I've read, it seems the NMEA 2k devices require advanced interfaces, but I thought this NMEA 0183 model GPS would connect fairly simply.
Thanks in advance.
- Mark
So how can I connect the necessary Garmin NMEA 0183 wires into that junction box to interface with the speedo? Or is that not even possible? From what I've read, it seems the NMEA 2k devices require advanced interfaces, but I thought this NMEA 0183 model GPS would connect fairly simply.
Thanks in advance.
- Mark