How do I connect the Innova 3100 Code Reader to my vehicle?
Connect the Code Reader cable connector to your vehicle’s Data Link Connector (DLC), which is typically located under the instrument panel or near the driver's side. Ensure the ignition key is off and the Code Reader power button is in the OFF position before connecting.
From the official Innova 3100 OBD2 Code Reader manual, page 17
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