Main Relays

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

What is a main relay?

A main relay is an electrical component that helps to control current flow in a circuit. It is typically used in automotive applications to help regulate higher-current components such as headlights and fuel pumps.

What is the purpose of a main relay?

The purpose of a main relay is to provide a controlled current flow to other electrical components in the vehicle. It helps to ensure that the current is not too high, which can cause damage to the components.

How can I tell if my main relay is faulty?

If your main relay is faulty, you may experience issues such as headlights not turning on, or a vehicle not starting. You may also hear clicking or buzzing noises coming from the relay.

Can a faulty main relay cause damage?

Yes, a faulty main relay can cause damage to other electrical components in your vehicle. It can also cause the vehicle to not start, or to experience other electrical issues.

How do I replace a main relay?

Replacing a main relay is a relatively simple process:

  1. Disconnect the negative battery terminal.
  2. Remove the old main relay from its mounting location.
  3. Connect the new main relay to its mounting location.
  4. Connect the negative battery terminal.
  5. Test the new main relay to ensure it is functioning properly.