Fuel flow information is generated in an engine compartment and transmitted for display on the fuel page(s) of a GPS signal receiver located in view of a vehicle operator. A fuel transducer coupled to a pre-programmed micro-controller are provided as an integrated single unit in the engine compartment of the vehicle (e.g., an aircraft). The integrated transducer/micro-controller unit outputs RS232 fuel flow signals to the GPS signal receiver without requiring any extra panel space. Since the transducer/micro-controller is already pre-programmed to compensate for the proportionality or "K" factor, no further calibration or compensation programming is needed at installation time (or when one composite transducer/computer unit is substituted for another). Separate transducer/micro-controller power supply and grounding connections suppress common mode noise. A blinking LED power/fuel flow visual display on the unit in the engine compartment helps trouble shoot power and/or transducer problems.