Instrument Cluster Voltage Regulator

There is only one limiter. "It" supplies power to ANY guages except speedo, tach, or ammeter.

In other words it powers fuel, temp, and oil if you have it.

When the limiter is built into the fuel gauge, as yours should be, the gauge will have THREE terminals.

1 switched 12V into the gauge to feed the limiter

2 limiter OUTPUT is wired internally to the fuel gauge, and comes OUT to a second terminal, which jumpers limiter output over to the temp and oil gagues

3 the fuel sender terminal.