Voltmeter Gauge

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Gauges & Accessories- Voltmeter Gauge
Gauges & Accessories- Voltmeter Gauge

The voltmeter gauge informs the driver about the batteries level of charge,and the condition of the alternator. The voltmeter gauge is similar to the fuel pressure gauge, but instead of measuring fluid in psi, the voltmeter measures the electrical system pressure in volts. The voltmeter is hooked up to a fused ignition switch,and an “on/off” source, and when its installed, it does not require any modification of the circuit, used to recharge the battery or any part of the alternator system. This circuit is also like a fuel pressure gauge, and it taps into a source of the electricity,in order to record its reading. The voltmeter readings come from the charging system. If the alternator is functioning properly the battery voltage should be maintained between 14.0 to 14.5 volts when the engine is on, which is reported directly to the voltmeter. This should be the maintained range unless there is a heavy load on the electrical system such as lights, heater, rear defogger, and wipers all working together as the engine is idling. If that is the case the voltmeter should run no lower than 12.5 volts. If it goes below 12.5 volts that means the battery is providing some of the current. When the engine is not running a fully charged battery will read around 12.5 volts if everything is working properly. If the alternator system were to have a failure, the voltage would be low and would continue to drop as the battery is depleted.


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