Garmin 4208 to Yamaha Fuel Mgmt

[laguna23]

How to????? I want to send the speed reading from my Garmin 4208 to my Yamaha Fuel Management gauge to get the most accurate fuel consumption reading.

[robalo78]

Take the harness that goes from the speedo guage to the fms guage and unplug from the speedo. The only wire you need is the white wire so cut the end off leaving enough wire to splice back on the plug if you ever have to. Also the shorter the better as far as the harness to the gps is concerned. Hook the white wire to the nmea output from the gps. Also you can do a search under yamaha fuel management for a breakdown on calibrating and setting up the guages.

[parrott]

Check here. SIM is very knowledgeable on this. You'll have to change a dipswitch also.
http://www.thehulltruth.com/forums/t...ighlightmode=1