How do you test a motorcycle coil?

To test a motorcycle coil, first, ensure the ignition is off and disconnect the coil from the motorcycle. Use a multimeter to measure the resistance across the primary terminals; it should typically read between 0.5 to 3 ohms. Then, check the secondary terminals, which should show a higher resistance, usually between 6,000 to 15,000 ohms. If the readings are outside these ranges, the coil may be faulty and should be replaced.