How to Repair Brake Lights on a 1990 Toyota Corolla

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    • 1). Open the trunk of your Toyota Corolla and pull back the carpeting on either side of the trunk opening, exposing the back of the taillight assembly underneath. Loosen the taillight retaining nuts on the back of the taillight assembly with your fingers.

    • 2). There are four cover clips on the rear cover where the bulbs are. Remove the cover clips by turning them counterclockwise with a Phillips screwdriver.

    • 3). Locate the wiring harness connector on the cover. Push the locking tab in and pull the connector out of the back of the cover. Remove the cover from the back of the taillight assembly to expose the bulbs inside.

    • 4). Locate the bulbs inside the cover and push in on the defective bulb. Rotate it counterclockwise and remove it from the bulb socket. Discard the defective bulb. Install a new bulb into the bulb socket, turning it clockwise to lock it in place.

    • 5). Position the cover on the rear of the taillight assembly and install the cover clips. Turn the clips clockwise with a Phillips screwdriver to secure the cover. Install the wiring harness connector into the socket on the back of the cover, pushing it in until the locking tab engages and the plug is secure.

    • 6). Tighten the taillight retaining nuts by hand, then replace the carpeting over the taillight assembly. If you have a bulb that is not functioning on the opposite light, repeat the process. Test the lights by turning the headlight switch on. Visually check the taillight to see that it is working, then have someone depress the brake pedal while you verify that the brake light is working.

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