If you're measuring the resistance of an ignition coil's secondary winding, and it's supposed to clock in at, say, 8,000 ohms, you'd want to set the multimeter to the number one step higher than that.

A multimeter is a helpful tool for advanced electrical projects. But multimeter symbols and their meanings can be cryptic to a new user. Learn what multimeter symbols mean, how to connect the ...

It's a must-have for any toolbox—but there's a learning curve involved. Learn how to use a multimeter for all of your electrical testing needs.

Switch the multimeter to measure resistance at its lowest setting, and test across the fuse. A reading of OL, or significantly higher than 20 ohms, suggests the fuse is blown.

Additional Multimeter Measurements Diode Test - Multimeters can also be used to measure the diode drop across a forward-biased diode.

Measuring Voltage With a multimeter, you can measure both AC and DC voltage—particularly useful for locating short circuits or determining if a rechargeable battery is holding a charge.

Measuring the electrical resistance (ohms) of motors, compressors, and other electrical devices in HVAC systems may seem straightforward. But when the measurements of zero (0) or “OL” (overload) come ...

For more than a century, scientists have relied on separate tools to measure the three core building blocks of electricity: ...