1. Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of the TOOWGM Rearview Turn Signal Lamp LED Light. This product is designed as a direct replacement for original equipment manufacturer (OEM) parts 81730-42020 and 81740-42020. Please read this manual thoroughly before installation to ensure proper function and safety.
2. Product Description
The TOOWGM Rearview Turn Signal Lamp is an LED light assembly designed to integrate into the rearview mirror housing of compatible Toyota vehicles. It serves as a visual indicator for turns and lane changes, enhancing vehicle visibility and safety. The lamp features a clear lens and utilizes LED technology for bright, efficient illumination.

Image 2.1: Front view of the TOOWGM Rearview Turn Signal Lamp, showing the clear lens and LED array.
3. Compatibility
This product is compatible with the following Toyota vehicle models and years, replacing OEM part numbers 81730-42020 and 81740-42020:
- Toyota RAV4 Adventure Sport Utility 4-Door (2.5L 2494CC 152Cu. In. l4 GAS DOHC Naturally Aspirated) - 2018
- Toyota RAV4 Hybrid LE+ Sport Utility 4-Door (2.5L 2494CC 152Cu. In. l4 ELECTRIC/GAS DOHC Naturally Aspirated) - 2018
- Toyota RAV4 Hybrid Limited Sport Utility 4-Door (2.5L 2494CC 152Cu. In. l4 ELECTRIC/GAS DOHC Naturally Aspirated) - 2018
- Toyota 4Runner Base Sport Utility 4-Door (4.0L 3956CC 241Cu. In. V6 GAS DOHC Naturally Aspirated) - 2018
- Toyota 4Runner Limited Sport Utility 4-Door (4.0L 3956CC 241Cu. In. V6 GAS DOHC Naturally Aspirated) - 2018
- Toyota 4Runner SR5 Sport Utility 4-Door (4.0L 3956CC 241Cu. In. V6 GAS DOHC Naturally Aspirated) - 2018
- Toyota 4Runner TRD Off-Road Sport Utility 4-Door (4.0L 3956CC 241Cu. In. V6 GAS DOHC Naturally Aspirated) - 2018
- Toyota 4Runner TRD Pro Sport Utility 4-Door (4.0L 3956CC 241Cu. In. V6 GAS DOHC Naturally Aspirated) - 2018
Note: Always verify the OEM part number on your existing component before purchasing to ensure correct fitment.
4. Safety Information
- Always disconnect the vehicle's battery before performing any electrical work to prevent electrical shock or damage to the vehicle's electrical system.
- Wear appropriate personal protective equipment, such as gloves and eye protection, during installation.
- Ensure the vehicle is parked on a level surface with the parking brake engaged.
- If you are unsure about any step of the installation process, consult a qualified automotive technician.
- Do not force components during installation. Improper installation can lead to damage or malfunction.
5. Package Contents
Upon opening the package, verify that all components are present and undamaged:
- TOOWGM Rearview Turn Signal Lamp (Left) - 1 unit
- TOOWGM Rearview Turn Signal Lamp (Right) - 1 unit
Note: Specific fasteners or tools are typically not included as they are reused from the original assembly or are standard automotive tools.
6. Setup and Installation
The following steps outline the general procedure for replacing the rearview turn signal lamp. Specific vehicle disassembly may vary. Refer to your vehicle's service manual for detailed mirror housing removal instructions.
- Prepare the Vehicle: Park the vehicle on a level surface, engage the parking brake, and turn off the ignition. Disconnect the negative terminal of the vehicle's battery to prevent electrical hazards.
- Access the Mirror Housing: Carefully remove the rearview mirror cover or trim panel to gain access to the turn signal lamp assembly. This may involve prying clips or removing screws. Exercise caution to avoid damaging paint or plastic components.
- Disconnect Old Lamp: Locate the wiring connector attached to the existing turn signal lamp. Gently press the release tab and pull the connector apart.
- Remove Old Lamp: Unfasten any screws or clips securing the old turn signal lamp in place. Carefully remove the lamp from the mirror housing.
- Install New Lamp: Position the new TOOWGM LED Turn Signal Lamp into the mirror housing. Ensure it seats correctly and aligns with any mounting points. Secure it with the original screws or clips.
- Connect Wiring: Connect the vehicle's wiring harness to the connector on the new lamp. Ensure the connection is secure and the tab locks into place.
- Reassemble Mirror Housing: Reattach the mirror cover or trim panel, ensuring all clips and screws are properly secured.
- Reconnect Battery and Test: Reconnect the negative terminal of the vehicle's battery. Turn on the ignition and test the turn signals (left and right) to confirm the new lamp is functioning correctly.

Image 6.1: Back view of the lamp, showing the mounting points and housing structure.

Image 6.2: Close-up of the electrical connector, illustrating the connection point.
Warning: Improper installation can lead to electrical issues or damage. If you are not confident in your ability to perform this installation, seek professional assistance.
7. Operating Instructions
The TOOWGM Rearview Turn Signal Lamp operates automatically in conjunction with your vehicle's existing turn signal system. When the turn signal lever is activated (left or right), the corresponding LED lamp in the rearview mirror will illuminate and flash, indicating your intended direction to other drivers.
- Left Turn Signal: Move the turn signal lever down. The left rearview mirror lamp will flash.
- Right Turn Signal: Move the turn signal lever up. The right rearview mirror lamp will flash.
- Hazard Lights: Activate the hazard warning light button. Both rearview mirror lamps will flash simultaneously.
No user intervention is required for the operation of the lamp itself once correctly installed.
8. Maintenance
The TOOWGM Rearview Turn Signal Lamp is designed for durability and requires minimal maintenance.
- Cleaning: Clean the lamp's clear lens periodically with a soft cloth and mild automotive glass cleaner to ensure maximum light output and visibility. Avoid abrasive cleaners or harsh chemicals.
- Inspection: Periodically check the lamp for any signs of damage, cracks, or loose connections. Ensure the light functions correctly during routine vehicle checks.
- No User-Serviceable Parts: The LED assembly is sealed. Do not attempt to open or repair the lamp, as this will void the warranty and may cause further damage.
9. Troubleshooting
If you encounter issues with your TOOWGM Rearview Turn Signal Lamp, refer to the following troubleshooting guide:
| Problem | Possible Cause | Solution |
|---|---|---|
| Lamp does not light up. |
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| Lamp flashes too quickly (hyper-flashing). |
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| Intermittent operation. |
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For issues not covered here, please contact TOOWGM customer support.
10. Specifications
| Feature | Detail |
|---|---|
| Brand | TOOWGM |
| OEM Part Numbers | 81730-42020, 81740-42020 |
| Manufacturer Part Number | 81730-42020 81740-42020 |
| Light Type | LED |
| Lens Color | Clear |
| Vehicle Service Type | Car |
| ASIN | B08VW1S5M2 |
| UPC | 791767499731 |
11. Warranty Information
TOOWGM offers a long-term warranty for this product, ensuring a worry-free ownership experience. For specific warranty terms, conditions, and claim procedures, please refer to the warranty documentation included with your purchase or contact TOOWGM customer support directly.
12. Customer Support
If you have any questions, require assistance with installation, or need to address a warranty claim, please contact TOOWGM customer support. Provide your product model number (81730-42020 / 81740-42020) and purchase details for faster service.
Brand: TOOWGM
Contact information (e.g., website, email, phone number) would typically be provided here by the manufacturer.