Primary Resistance

Remove coil connector. Using the low scale, connect ohmmeter leads to coil's battery and "TACH" terminals. See Fig 1. Resistance should be zero or nearly zero. If not, replace ignition coil.
Set ohmmeter on high scale, and connect leads to battery terminal and a good ground on coil. Reading should be infinity. If not, replace coil.

Fig 1: Ignition Coil Resistance Test Points. Coil primary wires must be removed for testing.