Reply To: testing coil on a 1949 Johnson OK20

Home › Forum › Ask A Member › testing coil on a 1949 Johnson OK20 › Reply To: testing coil on a 1949 Johnson OK20

August 26, 2023 at 8:02 am #279773
GARY
Participant

    US Member

    I assume there is only one coil with two plug wires.Disconnect all wires from coil to plugs,points,condenser and ground.Test secondary by checking ohms between tabs where plug wires attach to coil.Should be about 8,000 ohms.Next test primary between wire to points and ground wire,should be less than 1