Categories Guide

How do you install an ignition ballast resistor?

Connecting a ballast resistor is a fairly straightforward project, but you will want to pay attention to the wiring.

  1. Step 1: Determine if Ballast Resistor Is Needed.
  2. Step 2: Locate Ballast Resistor along Firewall.
  3. Step 3: Drill Holes for Securing Resistor.
  4. Step 4: Install Ballast Resistor.
  5. Step 5: Connect Wires to Positive.

Do you need a ballast resistor with an electronic ignition distributor?

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.

What does an ignition ballast resistor do?

The ballast resistor allows the ignition system to operate at a lower voltage until the engine starts. After ignition, the alternator begins to recharge the battery, restoring the regular voltage.

Can you replace ballast resistor?

Replacing a ballast resistor doesn’t have to be a huge job and it will hopefully fix the problems you are having with starting your car.

What happens if you don’t use a ballast resistor?

If the ballast resistor is not working properly, the vehicle will not start. Since it is an electrical system, it is something best left to the professionals to handle. The only way to have the vehicle up and running again is with a ballast resistor replacement.

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Does a 12 volt coil need a ballast resistor?

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.

Does a ballast resistor reduce voltage?

The ballast resistor, supplies the needed voltage during the start up, and then immediately after the arc is established, it reduces the voltage in addition to regulating the current flow.

How do you know if a ballast resistor is bad?

Measure the voltage (or check with a test light) the voltage between the single wire and ground. If there is power there, the ballast resistor is likely bad. Reconnect the wires and measure the voltage at the positive side of the coil. If you see 8-13 volts, you may have a bad coil.

Why do some ignition coils need ballast resistor?

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. Why would a Ballast Resistor be fitted in a car? To counteract this distribution of energy, ignition systems were changed to use a 9v coil instead of a 12v coil.

Where do you put a ballast resistor?

Note: Ballast resistors are usually located bolted to the firewall if your distributor and/or coil is at the rear of the engine. If your distributor is located near the front or side of the engine in the case of an inline-4 cylinder, then it’s probably right near the ignition coil or distributor.

How do you find the ballast resistor?

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.

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Does PerTronix ignitor need a ballast resistor?

Todd, since you need a new coil, I would suggest you buy the PerTronix 1.5ohm coil part #40001 for chrome or #40011 for black and run without a ballast resistor. This is providing you have the original Ignitor. If you have the Ignitor II (better unit), then use part #45001 for chrome or #45011 for Black which is a.

Do I need a ballast resistor with MSD ignition?

Late-model electronic ignitions or an MSD Ignition do not require the ballast. If you are looking to upgrade your stock coil, or want to compliment the performance of your MSD Blaster Ignition, MSD 5, 6, or 7, the Blaster Coil line is the right choice. Our Blaster Coils are designed for improved spark output!

Should a ballast resistor get hot?

The resistor getting warm IS a normal occurance. If you have a voltage source (12 volts), a complete path for current and difference of potential (any ground will do), current will flow.

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