Secondary Winding Test

Disconnect wiring from ignition coil. Set ohmmeter on x1000 scale. Connect ohmmeter across coil negative terminal and coil tower. Reading should be 8000-11,500 ohms. If incorrect, replace ignition coil.

NOTE: Whenever a high-tension wire is replaced or removed from spark plugs, coil or distributor, apply dielectric compound to inside of boot before connecting wire. Shorted Windings Test

Disconnect wiring from ignition coil. Connect ammeter between coil connector positive terminal and coil positive terminal. Connect a jumper wire between coil negative terminal and engine ground.
Place ignition switch in "RUN" position and note reading on ammeter. Current draw should be about 6.5 volts. If reading is higher, coil windings are shorted. Replace ignition coil.