How do you check a fuel gauge on a 1957 Oldsmobile?

To check the fuel gauge on a 1957 Oldsmobile, first ensure the ignition is on without starting the engine. Then, observe the fuel gauge on the dashboard; it should point to the appropriate level based on the amount of fuel in the tank. If the gauge doesn’t move or shows an incorrect reading, inspect the wiring and connections from the gauge to the sending unit in the fuel tank. Additionally, you may want to check the sending unit itself for any faults.