How can a marine technician test a boat’s electrical wiring?

A multimeter is an essential tool for testing a boat’s electrical wiring because it serves multiple functions, allowing the technician to measure electrical values such as voltage, current, and resistance. Testing for continuity is particularly important when diagnosing issues in wiring, as it can help identify breaks or faults in the circuit. Furthermore, measuring voltage can verify whether the electrical components are receiving the correct amount of power and whether the connections are functioning properly.

While a compass is useful for navigation, it doesn't provide any relevant information about electrical systems. A power meter focuses on energy consumption but does not assess the integrity of the wiring itself, which is critical for ensuring safe and reliable operation. An ammeter measures current specifically, but without the ability to read voltage or check for continuity, it would provide limited diagnostics. Therefore, utilizing a multimeter is the most comprehensive approach for evaluating a boat’s electrical wiring.