Ballast Resistors

Important: To get started, click the blue "Filter Options" button to select your vehicle and then use the filters to narrow your options.

Important: To get started, select your vehicle on the left and then use the filters to narrow your options.

What is a ballast resistor?

A ballast resistor is an electrical component that is used to reduce the current that is flowing through an electrical circuit. It helps to protect other components in the system from excessive current.

What is the purpose of a ballast resistor?

The primary purpose of a ballast resistor is to reduce the current in the circuit, which helps to protect other components in the system from damage due to an excessive current. It also helps to regulate the voltage in the circuit.

How do I know if my ballast resistor is faulty?

You can tell if your ballast resistor is faulty by testing it with a multimeter. If the voltage reading is significantly lower than normal or if the resistance reading is not within the normal range, then it is likely that the ballast resistor is faulty.

Can a faulty ballast resistor cause damage to other components in the system?

Yes, a faulty ballast resistor can cause damage to other components in the system due to an excessive current.

How do I replace a ballast resistor?

Replacing a ballast resistor is relatively simple and can be done in a few steps:

  1. Disconnect the battery to ensure safety
  2. Remove the old ballast resistor
  3. Install the new ballast resistor
  4. Reconnect the battery


How often should I inspect my ballast resistor?

It is recommended that you inspect your ballast resistor at least once a year to ensure it is in proper working condition.