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Ok. Do you have a digital mulitimeter?
Disconnect ign coil.
Ohm low range between the two connectors that go to the harness.
Should be less than an ohm IIRC
Ohm between either of those two and the disconnected spark plug wire.
Should be 1 or more K ohm.
Now switch your DMM to a high ohm range.
Measure engine case to tip of spark plug (no coil) and no fingers touching.
Should read nothing.
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