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GLOLight LED Combination Trailer Tail Light - 7 Function - Submersible - 34 Diodes - Driver Side

GLOLight LED Combination Trailer Tail Light - 7 Function - Submersible - 34 Diodes - Driver Side

Item # STL117RB
Our Price: $43.96
Trailer Lights
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Shipping Weight: 0.88 lbs
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Optronics Trailer Lights - STL117RB
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8" x 2-15/16". Waterproof trailer light acts as brake, tail, turn, side marker, side reflex reflector, rear reflex reflector, and license plate light. GloLight lens creates a solid light pattern with a smooth appearance. Stud mount. 3-Wire. Great Prices for the best trailer lights from Optronics. GLOLight LED Combination Trailer Tail Light - 7 Function - Submersible - 34 Diodes - Driver Side part number STL117RB can be ordered online at or call 1-800-940-8924 for expert service.
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  • Reviews (1153)
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  • Videos (3)
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  • Why etrailer?

Optronics Trailer Lights - STL117RB

  • Tail Lights
  • Rectangle
  • LED Light
  • Red
  • 8L x 3W Inch
  • Surface Mount
  • Stop/Turn/Tail
  • Side Marker
  • Rear Clearance
  • Side Reflector
  • Rear Reflector
  • License Plate
  • Submersible Lights
  • Optronics

8" x 2-15/16". Waterproof trailer light acts as brake, tail, turn, side marker, side reflex reflector, rear reflex reflector, and license plate light. GloLight lens creates a solid light pattern with a smooth appearance. Stud mount. 3-Wire.


  • Rectangular trailer tail light serves 7 functions
    • Stop light, tail light, turn signal light, side marker light, side reflex reflector, rear reflex reflector, and license plate light
  • GloLight lens creates a solid light pattern with a smooth appearance
    • Outer bands of LEDs function as tail light
    • Center LEDs act as turn and brake signal
  • Sealed, waterproof construction is submersible
    • Light is designed specifically for boat trailers
  • Durable surface-mount technology (SMT) construction of LED circuit board
    • Better withstands shock and vibration
    • Allows for improved heat distribution
  • LEDs make great replacements for incandescent lights
    • Last 50 times longer
    • More efficient - provide brighter light with less power output
    • No bulbs to replace - no brittle filaments
  • Durable plastic housing
  • Red lens over white LEDs
  • Mounts on surface of trailer with included studs
  • 3-Wire pigtail
    • White is for ground
    • Brown is for tail lights
    • Yellow is for stop and turn
  • DOT compliant
    • Meets FMVSS 108 and CMVSS 108 requirements for automotive lighting
  • P2 rated


  • Configuration: driver's side (left-hand side)
    • Passenger's-side light (STL116RB) sold separately
  • Dimensions: 8" long x 2-15/16" tall x 2-5/8" deep
  • Distance between mounting bolts (center on center): 2"
  • Diodes: 34
  • Power draw at 12.8 volts:
    • Stop/turn signal light: 0.252 amps
    • Tail light: 0.135 amps
  • Quantity: 1
  • Lifetime warranty on LEDs

Optronics STL117 Series GloLight LED Low Profile Combination Tail Light Diagram

Sealed, Waterproof Trailer Light

The waterproof construction of this light makes it ideal for use on trailers that may be submerged, like a boat trailer. The circuit board is sealed, which means that water will not damage the diodes or circuit board.

P2-Rated Lights

Diagram of light spread for P2 rated light

A P2-rated light produces a 45-degree angle of light to either side of its centerline for a total of 90 degrees of coverage. This beam pattern can be seen straight on, but it cannot be seen clearly from the side. So this type of light can be used as either a side marker light or a clearance light, but it cannot function as both. If you need both functions, then you must install 2 separate lights on your trailer - one as a front or rear clearance light and one as a side marker light.

Surface-Mount Light

Surface mount light

Surface-mount lights install flat against the surface of the trailer, so a hole does not need to be cut into the trailer for the light. This type of light is installed using a flange or bracket that has mounting holes. And mounting hardware is used to secure the light to the trailer.

STL117RB Optronics Glo Light Combination LED Boat Trailer Tailight - Left Side - Red Lens

California residents: click here

Video of GLOLight LED Combination Trailer Tail Light - 7 Function - Submersible - 34 Diodes - Driver Side

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.

Video Transcript for Optronics GloLight Trailer Lights Manufacturer Review

Brett Johnson: (silence)The Glolight is the stunning combination of premier lighting technology, meeting world-class style and capabilities. The introduction of the Glolight series represents the first truly different approach in years to the visual presentation of stop-tail-turn lamps.Most LED lamps have hotspots or patterns of bright light. Glolight lamps are visually distinctive from other LED lamps, because their lenses diffuse the light, giving them a smooth, bright, glowing appearance.The Glolight optical technology is so different, it's patentable. And Optronics has 35 new products with Glolight technology in its pipeline, right now. Mudd: Lighting is one of the most visibly predominant features on any vehicle, and this is a completely different looking yet highly effective light. We're focused on integrating the latest technology into our manufacturing process, and these new lights clearly represent the innovative partnership between Vanguard and Optronics.

Innovation is important to Vanguard, our customers, and our industry. Robert: Glolight technology looks different because it is different. Different in its optical approach and different all the way down to the circuit boards.We designed and manufactured all of our lamps using the most advanced engineering techniques, and test them in our own world-class, state-of-the-art optical testing facility. Lamps are engineered to resist everything, from shock, to dust, to high-velocity water spray. We're committed to designing and manufacturing erosion-resistant LED lighting products.

And Glolight lamps are produced using solid state, surface-mount device, or SMD, technology.Most LED lamps sold in the heavy duty market today, use what is typically referred to as "through hole" construction. Optronics LEDs are mounted directly to the surface of the circuit board, eliminating exposure to connecting points. LED lamps with SMD technology, like Optronics' new Glolight, are so robust that they can continue to function even if their circuit board is completely submerged in water. The unique Glolight lenses and housings are made of tough polycarbonate material that is sonically welded to create an impermeable seal. Glolight lamps meet all FMVSS 108 and SAE photometric requirements for visibility and safety.

And our lamps are tested at a certified, independent laboratory.I guess it's redundant to say this, but our lamps come with a lifetime warranty. Roush: There's nothing out there that's as eye-catching and effective as these Glolight lamps. Vanguard is always drawn to component supplier products that contribute to our customers' efforts to operate more effectively and safely. Glolight lamps just look different and more noticeable. And that means better safety.

Brett Johnson: With world-class manufacturing facilities, harness making capabilities, and a global market presence, Optronics is now changing the competitive landscape in HD lighting. We always have access to a lighting manufacturer with global sophistication, fleets are enjoying increased product availability, and everyone is befitting from new, innovative technology and the industry's most competitive pricing structure. With Glolight, Optronics is sending a signal that things have changed in the HD lighting industry.

Customer Reviews

GLOLight LED Combination Trailer Tail Light - 7 Function - Submersible - 34 Diodes - Driver Side - STL117RB

Average Customer Rating:  4.8 out of 5 stars   (1153 Customer Reviews)

8" x 2-15/16". Waterproof trailer light acts as brake, tail, turn, side marker, side reflex reflector, rear reflex reflector, and license plate light. GloLight lens creates a solid light pattern with a smooth appearance. Stud mount. 3-Wire.


Light is fine... mounting hole location was off by 1/8"... even though my trailer holes are slotted 1-1/2". Had to grind my trailer holes by hand in 90 degree heat to make your light fit... very frustrating and not cool.supposed to be a direct replacement per your own website.

Most GLOLight LED trailer lights have the mounting holes distanced at 2 inches from center to center.
-- Etrailer Expert Katrina B - 07/13/2022


These lights are the best. We use these on our fleet of 30 trailers.They definitely have out lasted the other brands.


Only giving a 2 because they shipped to me without the mounting hardware. I ordered both sides and the passenger side is really bright.

Both part # STL117RB
GLOLight LED Combination Trailer Tail Light - 7 Function - Submersible - 34 Diodes - Driver Side
for the Left Hand and part # STL116RB
GLOLight LED Combination Trailer Tail Light - 6 Function - Submersible - 28 Diodes - Passenger Side
for the Right Hand both come with mounting hardware. I have sent this information over to our customer service department for them to get in touch with you about sending the missing hardware.
-- Etrailer Expert Katrina B - 07/19/2022


Worked great on my boat trailer for about 3 months then the top and bottom led bars went out….which is why I had to buy this replacement in the first place.

I will have our customer service team reach out to you. The light has a limited lifetime warranty on the LED lights.
-- Etrailer Expert Jenny N - 02/04/2022


Great set of lights, lots of complements...!!
happy and satisfied with this product...!!
100% recommended

It is working excellent, no flickering at all. been expose to the whether and still looks new...!!Once again very satisfy with your product...!!Thank you Best regards...Braule
Braüle76 - 04/24/2016


Because one my boat trailer stop/tail lights was damaged I decide to upgrade both of them from incandescent to LED. What a difference; downright dazzling! The change out was as simple as could be given that the format and wiring of the lens/lamp housing was virtually identical between old and new. So much so, in fact, that I kept the undamaged old lens and housing to use in case of an incident enroute.
NOTE: I didn't use the crimped-on eye connector to ground the assembly to the mounting bolt of the housing as provided. I cut the eye off and wired directly to the coupler ground having just added a "car end" 6-pin to the boat trailer. Yes, I hate trailer lights that much!


Previous review was subject to troubleshooting why the lights weren't working.

Problem was in the plug between the truck and the boat.

The lights are fine and I'm upgrading my initial review from good to excellent. I really like the overall look and the bright light the LEDs provide.


Good product. To improve, I'd like a hard foam on the back where the bolts fit to give a pad between the light and mounting location.
Also, it's too expensive. I paid $27 thinking it was for the driver's side and passenger's side (description was correct, I just didn't read it all). When the product came in I had to order the other side. If I did it all over, I'd get both sides elsewhere for the same price.


Terrific product.......if you are tired of dim incandescent taillights this is the answer. Very, very bright in the full sunlight...even brighter for turn & brake function. There is no excuse for anyone to confuse your intentions of braking, turning or emergency situations. Simple two wire per side butt connection.


I replaced my broken trailer light using service was great and the replacement product high quality.


These lights are bright and are very visible ... love the new look on my boat trailer!!

These tail lights are nothing short of amazing!!! They are bright, and have worked flawlessly on my boat trailer getting submerged every weekend.
Cliff C - 11/11/2017


Extremely bright little trailer light that has so far performed flawlessly.

The lights are still working great. I like them so much that Ill probably end up buying another set of them for my other boats trailer sometime in the not too distant future.
Jarrett K - 08/31/2016


These are some very nice lights. Running lights are very sharp looking. Work perfect on a boat trailer. I never unplug them before launching and they continue to work perfectly.


Half of the LEDs are already inoperativ e.

Thank you for your review. There is a lifetime warranty on the LED lights. etrailer handles the warranty for this manufacturer so contact us at 800-298-1624.
-- Etrailer Expert Sierra K - 08/30/2021


Absolutely love these lights. They are nice and bright and have a great look to them. They can be seen well in the bright daylight. Install was easy. As noted by other reviewers I was quite careful when tightening the nuts as the only thing that prevents the bolts from turning is plastic. Couldn't be happier!


Awesome lights, Only had for one year but use the trailer regularly. Very happy with the visibility and low profile works great on my trailer.


Very good product, I will recommend this light to anyone who wants to upgrade a boat trailer.


Great products and pricing with exceptional customer service! The product fit perfectly on my trailer.


Amazing difference over stock 1157 bulbs-way brighter.


Great lights. Fits my Ranger Trail great and light up very bright !


Direct fit for my damaged trailer light.


I installed the lights at full sun. And they are still bright.


Products are as described. Fast delivery.


Looks great...and performs great. Would definitely recommend and purchase again.


Show More Reviews

See what our Experts say about this Optronics Trailer Lights

  • Do the Optronics 8 Glolights # STL117RB and # STL116RB Come with Mounting Hardware
    Yes, I went out to the warehouse and verified that the Optronics 8" Glolight # STL117RB for the Left Hand and part # STL116RB for the Right Hand both come with mounting hardware. The hardware is not stainless steel.
    view full answer...
  • Availability Of Optronics Waterproof Trailer Lights
    We do carry the Optronics 8 Inch Glolight. part # STL117RB for the left hand and part # STL116RB for the right hand. These waterproof lights feature the stop, turn, tail, rear reflex, side marker, side reflex, and license light for the right hand. The # STL117RB has 34 diodes, 28 for the tail light and 6 for the license light. The # STL116RB has 28 diodes. The installation studs measure 2 inches center to center. This light measures 8 X 2-15/16 X 2-5/8 inches.
    view full answer...
  • Changing GLOLight LED Combination Trailer Tail Lights on a Boat Trailer
    The only thing extra that you may have to do is find a suitable mounting location for the white ground wire. Sometimes older lights ground through the mounting hardware but the GLOLight LED Combination Trailer Tail Light # STL116RB grounds through the white wire with the ring terminal on it. Asite from that I do recommend using heat shrink butt connector like part # DW05743-5 for a water-tight seal to keep the wiring from becoming damaged. You referenced the passenger side taillight....
    view full answer...
  • Tracker Boat Trailer Optronic Brake/Left Blinker Stopped Working Replacement Light Solution
    Based on the number you listed the light fixtures you need is the kit part # TLL160RK for both lights or just part # STL116RB for right hand or part # STL117RB for left hand.
    view full answer...
  • Comparing Optronics Aero Pro and Glolight Trailer Tail Lights
    There would be a noticeable difference if you had both the Aero Pro light # STL37RB and the Glolight, # STL117RB right next to each other. You would notice that the Glolight seams to actually sort of glow rather than just light up. This is due to the top and bottom bars that light up solid. Both lights are going to be plenty bright. Light # STL37RB has 23 diodes which will be very bright as you can see in the picture submitted by reviewer Becky P. She is using tail lights # STL37RB and...
    view full answer...
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Info for this part was:

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Installed by:
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