https://docs.emtronaustralia.com.au/sensors/datasheets/ethanol-content-sensor/index.htmlThe Emtron Ethanol Content (Flex Fuel) Sensor is a Continental sensor that measures the ethanol content of the fuel passing through it and outputs a frequency-based signal the ECU uses for flex-fuel compensation. Continental Ethanol Content Sensor showing the three connector pins. Wiring Pin Function 1 12V or ECU 8V Out 2 Ground 3 Output NoteNOTE The Output pin can be connected to any Digital Input Channel 1-8.Hugoen-us