How to Replace the Turn Signal Flasher Relay in a 1987 Toyota Corolla

Replacing the turn signal flasher relay in a 1987 Toyota Corolla is a straightforward repair that I can perform in about 15-20 minutes with some basic hand tools. In this guide, I will walk through the entire process step-by-step to show you how easy it is to do this repair yourself.

What You'll Need

To replace the turn signal flasher relay in a 1987 Corolla, you'll need the following tools and parts:

• New turn signal flasher relay - I recommend sticking with an OEM Denso relay, which can be found online or at your local auto parts store for around $10-15. Make sure it is rated for a 1987 Corolla.
• Phillips screwdriver - To remove the lower dash panel screws.
• Needle nose pliers - Helpful for releasing the relay from its socket.
• Gloves - To protect your hands from sharp metal edges.

Locating the Turn Signal Flasher Relay

The turn signal flasher relay is located under the driver's side lower dash panel, next to the steering column. Here are the steps to access it:

1. Turn the ignition switch to the "OFF" position - Make sure the key is out of the ignition before proceeding.

2. Remove the lower dash panel - There are 3 Phillips head screws securing the panel. Remove them with your screwdriver and pull off the panel.

3. Locate the relay socket - It will be a black plastic socket with several wires going into it.

Removing the Old Flasher Relay

With the socket now accessible, follow these steps to remove the old relay:

1. Grasp the relay - It pushes into the plastic socket. Wear gloves to get a good grip.

2. Pull firmly straight out - Rock it back and forth lightly while pulling to release it from the socket.

3. Inspect the relay terminals - Look for any corrosion or damage. Clean if necessary.

4. Inspect the socket - Make sure it is not cracked or damaged.

Installing the New Flasher Relay

Installing the new relay is easy. Follow these steps:

1. Line up the new relay terminals - Match the new relay terminal arrangement to the socket.

2. Press straight in firmly - You'll feel it click into place. Ensure it is seated fully.

3. Test operation - Turn your turn signals on. The relay should audibly click when operating correctly.

4. Check exterior lights - Make sure your front and rear turn signals blink properly.

5. Reinstall dash panel - Put the lower panel back in place and reinsert the 3 screws.

That's all there is to it! With the new relay installed, your turn signals should be working properly again. The repair only takes 15-20 minutes and requires minimal tools. Refer to your Corolla's factory service manual for more detailed procedures if needed. Let me know if you have any other questions!