Negitive Ground Coil Wiring

Sometimes substituted for a failed magneto coil ignition system. How to wire an engine coil. During first half of the 20th century some manufacturers used positive ground while others used negative ground and some even switched form positive earth to negative earth more than once.

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Pertronix Negative Ground Wiring

Ignition Coil Polarity

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Negitive ground coil wiring. Hold this ht wire near a grounding point or near the connector end of a spark plug and position the tip of a graphite pencil in between. Connect the positive coil wire to the positive terminal of the ignition coil. With any ignition coil wiring hookup always remember this. Negative ground negative to distributor.

Locate the negative coil wire. Battery ignition using external coil. The coil negative is a short brown pigtail wire that goes to the fan shroud. Wire from ignition switch switched power to coil should be attached to the positive terminal on the coil.

Yes any battery ignition coil fired engine will run either way you hook up the wires to the coil. Positive ground positive to distributor. Negative ground battery thru starter solenoid key switch to on coil. Jcd to answer your last part of your question.

The negative terminal of the original positive ground ignition coil is still the battery terminal that connects to the ignition switch and the coil itself does not care which direction the current traveled from the battery to the negative terminal of the coil. Positive to negative earth conversion. On coil to distributor. Convert a vehicle from positive earth to negative earth.

The battery ground connection is what dictates which wire goes to where on the coil. If you mean msd there are two wires from the box to the coil its a floating ground. All the porsche cars have one there are only four terminals on the cdi box ground 12v points trigger and the coil positive. If the ignition low tension coil wiring is.

In super laymans terms. What cdi engine doesnt have a coil ground. Most newer cars do not have a points switch so that terminal is connected to ground or the. For negative ground the terminal goes to the distributor to be grounded on the engine block.

How to properly connect this type of coil to your engine. Wire from distributor to coil should be attached to the negative terminal on the coil. If you are still skeptical about all this there is a quick way to check directly which way the current is flowing in the high tension circuit. Disconnect a spark wire from a spark plug or the coil wire from the distributor cap.

On most cars made before 1980 this wire connects to the points switch which is located on the distributor.