Does a coil have polarity?
Most coils with lead wires use the same color wire for both terminals and have no polarity markings. The answer is that polarity does not matter. You can connect the positive terminal to either of the two wires without affecting the operation of the valve.
What does a resistor do on a ignition coil?
The ballast resistor keeps the engine running by preventing the engine from receiving full amperage from the ignition once started. In order to get the vehicle started, the starter sends a higher amperage to the spark plugs when you turn the key in the ignition. The spark plugs need the initial jolt to fire up.
Where is the positive coil wire on a car?
Locate the positive coil wire, which runs from the ignition switch to the positive terminal of the ignition coil. On later model cars, this wire may run back to the car’s computer or the ignition control module. Connect the positive coil wire to the positive terminal of the ignition coil. Locate the negative coil wire.
How are the coils connected to the ignition switch?
This was assuming the vehicle wiring was connected for positive earth (positive battery cable grounded on the chassis). If you reverse battery polarity (going to negative earth), then these coils need to be connected with “CB” to the ignition switch and “SW” to the distributor points wire.
Where does the positive ground terminal go on an ignition coil?
For positive ground the “+” terminal goes to the distributor (to be grounded on the engine block). For negative ground the “-” terminal goes to the distributor (to be grounded on the engine block).
How do you connect a lead wire to a coil?
Step 3 Connect the positive (+) coil lead wire to the positive (+) terminal of the coil using a small combination wrench. Connect the negative coil lead wire to the negative (-) terminal of the coil. Insert the high tension lead wire into the center post of the coil making sure it fully seats.