Order of execution
1. To test for continuity, connect a circuit tester or negative voltmeter probe to the negative battery terminal or ground.
2. Connect the second probe to the connection in the circuit under test, preferably closest to the battery or fuse. In this case, this section of the circuit must be energized by the battery, unless the battery connector is conducting current or the fuse has not blown (at the same time, do not forget that some electrical circuits are switched on only when the key in the ignition switch is turned to a certain position).
3. Turn on the circuit, then connect the tester probe to the connection closest to the circuit breaker on the side of the item being tested.
4. If voltage is present (as evidenced by a control light or voltmeter readings), this means that the section of the circuit between the corresponding connection and the switch has no breaks.
Continue checking the circuit in the same way after finding a section where there is no voltage. This means that an open circuit occurred between this point and the point of the previous test, which had voltage. Most open circuit problems are caused by a broken or loose connector.
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