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Do all ignition coils need a ballast resistor?

Do all ignition coils need a ballast resistor?

Pete, most coils need the resistor Although that’s not the case with EVERY coil, most do require it. The resistor limits the CURRENT going through the coil. If the coil required a ballast resistor when it was used with points, then you must still use the resistor. If it didn’t, then no resistor is necessary.

What’s the difference between a ballast and non ballast coil?

What is the difference between the two types of coils? Basically, a non-ballast coil is designed to produce full spark output with 12 volts on the input (+ terminal). A ballast coil is designed to produce the same spark output, but with only 6 to 9 volts on the input.

What does a ballast coil do?

What is a Ballast Resistor and what does it do and why? A Ballast Resistor is an electrical device that reduces voltage to the coil so that more energy is available for the spark plugs during starting.

Do you need a ballast resistor with electronic ignition?

Electronic ignition systems, whether factory Mopar or aftermarket, don’t utilize breaker points, thereby not actually needing a ballast resistor to control amperage through the pickup coil.

Do you need a resistor with a 12 volt coil?

If a 6 volt ignition system is converted to 12 volts and a Delco style 12 volt coil with an internal resistor is installed as part of the conversion, no external resistors are required. The 12 volt battery must be connected so the negative (-) battery terminal is connected to ground.

How many volts should my coil have?

The electrical system in your vehicle works on 12 volts, so every component must be based on 12 volts, as well. There is a wire connected to the ignition coil (known as a “hot wire”) that carries the 12 volts into the coil itself.

Can you use any ignition coil?

No absolutely not , coils need to have the proper ohm rating for whatever ignition system you are running. Although a coil is a coil. You need a 5 ohm coil for point ignition, any 5 ohm coil will work, or close.

How do you test a ballast coil?

To test your ballast resistor you need an ohm meter or multimeter set to ohms. Remove the connectors from both sides of the resistor. The ohms should read between 1.8 and 5 ohms. You should be getting 9 volts to the positive side of the coil.

What happens when a ballast resistor goes bad?

If your ballast resistor is bad, your vehicle will not run and you will have to have it towed to the mechanic’s shop. The biggest sign your ballast resistor is bad is your vehicle will start, but immediately stop as soon as you let go of the key.

How many ohms should a 12 volt coil have?

You should have a resistance reading of at least 3-4.5 ohms. A bad coil will show a higher reading then 3-4.5. Next, place the red or black lead from the meter to the centre of the coil , and to either one of the terminals positive or negative. You want 9500-10000 Ohms, less is on but no more.

How does a ballasted ignition system work in a car?

The later ballasted ignition system used a modified coil that delivered a full power spark which was reduced by installing a ballast resistor or resistor wire in the power feed to the coil.

Can you run a coil with a ballast resistor?

You can however use such coils provided you remove the ballast resister. Never try to run a ballasted coil when a ballast resistor is not present in the ignition system! Can I fit a Powerspark Electronic Ignition Kit if I have a ballast resistor?

Can a 12 volt ignition system work with a ballast resisted ignition system?

Running a 12-volt coil on a ballast-resisted system will produce a very weak spark – consequently the engine won’t run too well. Running a 6 or 9-volt coil on a 12-volt system will produce a healthier spark but will burn the coil out real quick.

How can I tell if I have a standard or ballast coil system?

How can I tell if I have a standard or ballast coil system? Ballast ignition systems were introduced in around 1970. To find out for sure, use a multimeter to check the voltage on the positive wire of the coil with the ignition on.