Electrical diagnostic work is one of the most challenging parts of automotive repair ... Set the dial of the multimeter to measure a 0-20 volts range DC, typically labeled with a "V⎓" symbol.

Why an auto ... the multimeter and its battery. A tactile switch is connected to one of the external interrupt pins and, when pressed, gives you 15 minutes of time to use the meter.

but a resistance test can be used to find the same information. Some multimeter models may have an auto-ranging feature. This ...