Quote:

Best way to check it is with the key on and eng off. This way the current is flowing to ground and with a standard Mopar electronic ign and a ballast you should see about 6 or 7 volts. One big factor with the eng running is dwell time. Everytime the ECU opens the coil ground (fireing plugs) you will see 12 volts at the coil and when its grounded you will see about 6 or 7 on the coil + and 0 volts on the coil - side. So with the eng running this happens so fast you get an average of the 2 readings. Also how hot the ballast is makes a small difference. Test it with the key on eng off. Ron



Doesn't the coil draw voltage even when the engine is not running?