With Tachometer

Fuel Gauge Resistance And Engine Coolant Temperature Gauge Resistance:

Use an ohmmeter to measure the resistance value between the terminals.
Standard value:
Power supply-Ground: 210.6 - 257.4 Ohm
Power supply-Fuel gauge: 78.3 - 95.7 Ohm
Fuel gauge-Ground: 132.3 - 161.7 Ohm