Fuel management gauge

[paulbasile]

My gauge works with gallons used and gallons per hour but no sync or econ.I think it might be in the wiring,what would the wiring diagram look like? Thanks

[boscoe99]

To get sync you need two engines and two tachometers. To get economy you need a speed input. The diagrams looks just about like all other diagrams.

What country are you in?

[paulbasile]

I have duels and its worked before but doesnt work now.I was working behind the dash and thought I un hooked something.

[boscoe99]