How do you check ohms on 1990kx80 coil?

To check the ohms on a 1990 KX80 coil, first, ensure the ignition is off and the spark plug is removed for safety. Use a multimeter set to the ohms (Ω) setting and connect the probes to the primary terminals of the ignition coil; you should typically see a resistance reading between 0.4 to 2.0 ohms. Then, check the secondary terminals (one probe on the high voltage terminal and the other on the ground terminal) for a resistance reading, usually between 5,000 to 15,000 ohms. If the readings are outside these ranges, the coil may be faulty and should be replaced.