How to Check for Vehicle Electrical Leakage?

[LeilaniLynn]

Here are the methods to check for electrical leakage in a car: 1. First, inspect the battery's observation window and the exterior of the battery to see if there is any leakage; 2. Use a multimeter to measure the battery voltage and charging output to ensure they are normal—normal voltage should be above 12V, and after continuous discharge for 10 seconds, it should not drop below 10V; 3. Turn off all electrical devices in the car, ensure the doors and trunk are locked, disconnect the negative terminal of the battery for 20 minutes, then connect one end of a test light to the negative cable and the other end to the negative terminal of the battery. If the light illuminates, it indicates that electrical devices or wiring are still leaking current, and you should inspect the relays and fuses. Additional Information: Besides the conventional methods mentioned above, areas such as the trunk light, glove compartment light, and cigarette lighter are often overlooked when checking for electrical leakage in a car.