yamaha fuel management gauge

[dorado42]

I am trying to find out why fuel management gauge is not working. the gauge reads FULL all the time. I did find two pink wires on the back of gauge that are not connected to anything else. Can anyone share with me the wiring diagrams to know what wires go where. It does have two fuel tanks with a toggle switch to go between the tanks for fuel gauge. ANY help would be appreciated.

[boats.net]

Not sure what guage you have, the speedo has the fuel gauge in it not the FMM.
Do you have Command Link or standard Multifunction digital gauges

[dorado42]

I have the multi gauge combo with the bar graph. Are you talking about the speedo from the lower unit......where does the speedo plug into