Views: 222 Author: Ann Publish Time: 2025-04-20 Origin: Site
Content Menu
● What is the OLM Light Tunnel Turn Signal Indicator?
● Where to Buy Authentic OLM Light Tunnel Turn Signal Kits?
● Benefits of OLM Light Tunnel Turn Signal Indicator
● Additional Accessories and Wiring Kits
● Common Installation Tips and Troubleshooting
● FAQ
>> 1. What vehicles are compatible with the OLM Light Tunnel Turn Signal Indicator?
>> 2. Is professional installation required?
>> 3. Does the kit come with wiring harnesses?
>> 4. Will the OLM Light Tunnel Turn Signal Indicator cause hyper-flashing?
>> 5. Can I see the turn signal light from inside the vehicle with this kit?
The OLM Light Tunnel Turn Signal Indicator is a popular aftermarket upgrade designed primarily for Subaru WRX, STI, Forester, and Crosstrek models. It enhances the visibility of your vehicle's turn signals by illuminating a clear tunnel in the mirror housing, allowing both the driver and nearby vehicles to see the turn signals more clearly. This article explores where to buy authentic OLM Light Tunnel Turn Signal Kits, installation tips, benefits, and answers to frequently asked questions.

The OLM Light Tunnel Turn Signal Indicator is a sleek, OEM-style modification that replaces the black plastic piece in Subaru mirror housings with a clear light tunnel. This allows the turn signal light to shine through the mirror, improving visibility and safety.
- Designed for 2015-2021 Subaru WRX, STI, Forester, and Crosstrek models.
- Provides enhanced side visibility of turn signals.
- OEM look and easy installation.
- Improves signaling to vehicles beside and behind you.
This upgrade is especially popular among Subaru enthusiasts who want to maintain a factory appearance while enhancing functionality. The light tunnel creates a distinct illuminated pathway for the turn signal light to shine through, which not only looks stylish but also increases the safety of your vehicle on the road.
Several reputable online retailers specialize in genuine OLM products. Here are some of the best sources to purchase authentic OLM Light Tunnel Turn Signal Indicator kits:
The Mod Garage is a trusted retailer specializing in Subaru aftermarket parts. They offer authentic OLM Light Tunnel Turn Signal Indicator kits at competitive prices, typically around $29.95. Their website provides detailed product descriptions and customer reviews to help you make an informed purchase.
New Provisions Racing stocks OLM Light Tunnel Turn Signal Indicator kits specifically for 2015-2019 Subaru WRX/STI models. They offer flexible payment options and have a solid reputation for quality and customer service. Their kits are priced similarly to other retailers, around $29.95.
Import Image Racing is known for a wide range of Subaru performance and aesthetic upgrades. They carry OLM Light Tunnel Turn Signal Indicator kits compatible with 2015-2021 WRX/STI, Forester, and Crosstrek models. Their website also includes installation guides and customer feedback, which can be very helpful.
RallySport Direct offers OLM Light Tunnel Turn Signal Indicator kits for Subaru base models from 2015 to 2021. They are a reputable supplier with a large inventory of Subaru parts and accessories, making them a convenient one-stop shop.
For those who want to ensure authenticity, purchasing directly from OLM's official website is a great option. They also offer complementary wiring harnesses and electrical components designed to work seamlessly with the Light Tunnel Turn Signal Indicator kits.
Installing the OLM Light Tunnel Turn Signal Indicator is straightforward and typically takes about 5 minutes with basic tools such as a screwdriver and a trim removal tool. The installation process does not require any complex wiring or professional assistance, making it a popular DIY upgrade.
1. Remove the mirror turn signal housing from your vehicle by carefully prying it off using a trim removal tool or screwdriver.
2. Take off the plastic cover inside the housing to expose the internal components.
3. Break off the black plastic piece where the light tunnel will be installed. This piece is designed to be removed to make way for the light tunnel.
4. Insert the OLM light tunnel piece into the space created by removing the black plastic.
5. Reassemble the housing by snapping the plastic cover back in place and reinstalling the mirror housing onto the vehicle.
The result is a factory-like finish with enhanced turn signal visibility. The clear tunnel allows the amber light to shine through the mirror housing, making your signals more noticeable to other drivers from multiple angles.

Upgrading to the OLM Light Tunnel Turn Signal Indicator offers numerous advantages:
- Improved Visibility: The light tunnel significantly improves the side and rear visibility of your turn signals, making it easier for other drivers to see your intentions, especially in low-light or adverse weather conditions.
- OEM Appearance: Designed to mimic factory parts, the light tunnel blends seamlessly with your vehicle's original design, maintaining a clean and professional look.
- Easy Installation: The kit is designed for quick and simple installation without the need for special tools or professional help.
- Increased Safety: Enhanced signaling reduces the risk of accidents caused by unclear turn signals, especially when changing lanes or making turns.
- Cost-Effective Upgrade: Compared to other lighting modifications, the OLM Light Tunnel Turn Signal Indicator is affordable and offers great value for the safety benefits it provides.
- Driver Feedback: The light tunnel also allows the driver to see the turn signal illuminated through the mirror, providing immediate visual confirmation that the signal is active.
To complement the OLM Light Tunnel Turn Signal Indicator, OLM offers several wiring harness kits and adapters that simplify installation and ensure compatibility with your vehicle's electrical system:
- OLM Turn Signal Plug and Play Tap Harness Kit for 2018+ WRX/STI – This harness allows you to connect the turn signal indicator without cutting or splicing wires, reducing installation time and risk of electrical issues. Priced around $19.00.
- OEM Style Fog/Turn Signal Harness for 2015-2021 Subaru WRX – Designed to integrate seamlessly with factory wiring, this harness is useful for those upgrading multiple lighting components. Priced around $26.00.
- PSX24W to H11 Adapter for BRZ/Crosstrek – An adapter that allows for easy bulb compatibility when upgrading lighting components. Priced around $8.50.
These accessories help prevent common issues such as hyper-flashing, which can occur when the vehicle detects a lower electrical load from LED turn signals.
- Handle with care: Mirror housings and plastic components are delicate. Use plastic trim tools to avoid scratching or damaging parts.
- Test fit before final assembly: Ensure the light tunnel fits perfectly before reassembling the mirror housing.
- Check turn signal function: After installation, test the turn signals to confirm proper operation and visibility.
- Address hyper-flashing: If your turn signals flash faster than normal after installation, consider adding a load resistor or using OLM's plug-and-play harness kits to resolve the issue.
- Consult vehicle manual: Refer to your Subaru's service manual for mirror removal instructions if unsure.
The OLM Light Tunnel Turn Signal Indicator is a highly recommended upgrade for Subaru owners looking to improve their vehicle's signaling visibility and safety. It offers an OEM-quality look, easy installation, and enhanced functionality at an affordable price. Authentic kits can be purchased from trusted retailers such as The Mod Garage, New Provisions Racing, Import Image Racing, RallySport Direct, and directly from OLM's website. With the added benefit of wiring accessories, this upgrade is a practical and stylish addition to your Subaru that enhances both aesthetics and safety on the road.

The kits are compatible with Subaru WRX and STI models from 2015 to 2021, as well as Forester (2014-2018) and Crosstrek (2013-2017) models.
No, installation is straightforward and can be done with basic tools in about 5 minutes.
The light tunnel kit itself does not include wiring harnesses, but OLM offers separate plug-and-play harness kits to complement the installation if needed.
If hyper-flashing occurs after installation, it can usually be resolved by installing a load resistor or a hyper-flash module, which are available from OLM or other aftermarket suppliers.
Yes, the light tunnel allows the driver to see the turn signal illuminated through the mirror, providing additional feedback.
[1] https://themodgarage.com/product/olm-light-tunnel-turn-signal-indicator/
[2] https://www.newprovisionsracing.com/products/olm-light-tunnel-turn-signal-indicator-15-19-wrx-sti
[3] https://www.importimageracing.com/collections/olm/products/14sjlttsiver2-olm-light-tunnel-turn-signal-indicator-2015-wrx-sti-14-18-forester-13-17-crosstrek
[4] https://www.rallysportdirect.com/products/15valttsiver1-olm-light-tunnel-turn-signal-indicator
[5] https://olm.com/collections/wiring-and-electrical
[6] https://www.revzilla.com/assets/0003/6554/diodekit.pdf
[7] https://www.importimageracing.com/products/14sjlttsiver2-olm-light-tunnel-turn-signal-indicator-2015-wrx-sti-14-18-forester-13-17-crosstrek?srsltid=AfmBOopP0dYEzspr4qeX-0VR3-S_VZ_3v93OXHMIu-pAiwSKM-3a5uqv
[8] https://wrxdaily.com/products/olm-facelift-jdm-style-drl-sequential-turn-signal-bezel-2018-2021-wrx-sti
[9] https://cdn.z1motorsports.com/upload/Install_350Z_LED_Turn_Signal.pdf
[10] https://wiki.openstreetmap.org/wiki/Zh-hans:Map_Features
[11] https://www.youtube.com/watch?v=SlSUbIHQgUQ
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