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GloLight Thinline LED Trailer Light - Brake, Tail, Turn - Submersible - Red - 17" Long
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Optronics

GloLight Thinline LED Trailer Light - Brake, Tail, Turn - Submersible - Red - 17" Long

Part Number: STL179RB
47 Reviews | 11 Questions
$47.13
Retail:$77.23
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optronics trailer lights tail brake/tail/turn glolight thinline led light - brake turn submersible red 17 inch long
optronics trailer lights tail non-submersible stl179rb
optronics trailer lights tail 17l x 1-3/8w inch
optronics trailer lights brake/tail/turn 17l x 1-3/8w inch stl179rb
optronics trailer lights brake/tail/turn non-submersible
optronics trailer lights tail brake/tail/turn glolight thinline led light - brake turn submersible red 17 inch long
optronics trailer lights non-submersible 17l x 1-3/8w inch stl179rb
optronics trailer lights tail non-submersible stl179rb
optronics trailer lights tail brake/tail/turn
optronics trailer lights tail 17l x 1-3/8w inch glolight thinline led light - brake turn submersible red 17 long
optronics trailer lights tail non-submersible glolight thinline led light - brake turn submersible red 17 inch long
optronics trailer lights tail brake/tail/turn
optronics trailer lights brake/tail/turn non-submersible stl179rb
optronics trailer lights tail 17l x 1-3/8w inch glolight thinline led light - brake turn submersible red 17 long

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GloLight Thinline LED Trailer Light - Brake, Tail, Turn - Submersible - Red - 17" Long customer photo
GloLight Thinline LED Trailer Light - Brake, Tail, Turn - Submersible - Red - 17" Long customer photo
GloLight Thinline LED Trailer Light - Brake, Tail, Turn - Submersible - Red - 17" Long customer photo
GloLight Thinline LED Trailer Light - Brake, Tail, Turn - Submersible - Red - 17" Long customer photo
GloLight Thinline LED Trailer Light - Brake, Tail, Turn - Submersible - Red - 17" Long customer photo
GloLight Thinline LED Trailer Light - Brake, Tail, Turn - Submersible - Red - 17" Long customer photo
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This long, thin tail light fits in those tight spaces on your trailer or truck where you couldn't fit anything else. It mounts on the surface and wires to your trailer with the included 3-wire pigtail. Great Prices for the best trailer lights from Optronics. GloLight Thinline LED Trailer Light - Brake, Tail, Turn - Submersible - Red - 17" Long part number STL179RB can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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Optronics Trailer Lights - STL179RB

Highlights

  • One Light, 3 Functions: Provides stop, turn, and tail signals so your trailer stays visible.
  • Slim Fit Anywhere: 17" x 1-3/8" size fits tight spaces where larger lights won’t.
  • Long-Lasting LEDs: 28 diodes use less power and outlast incandescent bulbs.
  • Reliable on the Road: Waterproof housing keeps out moisture for worry-free use.
  • Road Legal: Meets DOT, FMVSS 108, and CMVSS 108 standards for compliance.
  • Simple Wiring Setup: 3-wire pigtail with color-coded leads makes connection easy.

Features to know about

Brighter and More Efficient Lighting: 28-Diode LED GloLight Design

Older incandescent lights can’t match the brightness or efficiency of LEDs. This 17" long Optronics GloLight Thinline LED Trailer Light uses 28 diodes to deliver a bright, even glow that’s easy to see day or night. The bar glows for the tail light, while the center LEDs illuminate for brake and turn functions. It draws just 0.634 amps for stop/turn signals and 0.445 amps for tail light at 12.8 volts—so you get strong light output with low power demand and no fragile bulbs to replace.

Tight Space Mounting: Slim 17" x 1-3/8" Design

Space on a trailer can be limited, and that’s where the Thinline profile really helps. Measuring just 17" long, 1-3/8" tall, and 1" thick, it fits where larger lights won’t. The surface-mount design keeps installation simple—just bolt it to a flat surface and connect the included 3-wire pigtail. Mounting holes are set 16-1/8" apart on center for a clean, secure fit that looks built-in rather than bulky.

Worry-Free Use Around Water: Fully Sealed and Waterproof

Moisture is a common enemy of trailer lights, but this sealed GloLight stands up to it. The waterproof housing and acrylic lens prevent water intrusion, making it a solid pick for boat trailers or wet conditions. You don’t have to worry about corrosion or shorted circuits after submersion—the sealed design keeps the LEDs safe and working reliably trip after trip.

Clear Wiring Setup: Simple 3-Wire Connection

No complicated wiring here. The included pigtail makes hookup quick and easy: black wire for tail light, red wire for brake and turn signal, and white wire with #10 ring terminal for ground. At only 7" long, the harness is tidy and manageable so your wiring stays organized and protected from snagging or damage during use.

Built to Last: Durable and Compliant LED Construction

This light’s polycarbonate housing and acrylic lens are built to handle vibration and rough use without cracking or fading. It meets DOT, FMVSS 108, and CMVSS 108 standards for safety compliance, giving you peace of mind that it’s road-ready from day one. Backed by a lifetime LED warranty, it’s a dependable upgrade that won’t leave you dealing with burnt-out bulbs again.

Specs

Dimensions

  • Overall dimensions: 17" long x 1-3/8" tall x 1" thick
  • Mounting holes: 16-1/8" apart on center
  • Pigtail harness length: 7"

Dimensional diagram of Optronics GloLight Thinline LED Trailer Light STL179RB showing 17-inch length, 1-3/8-inch height, and mounting hole spacing for surface installation.

Electrical

  • Diodes: 28
  • Power draw at 12.8 volts (Stop/turn signal light): 0.634 amps
  • Power draw at 12.8 volts (Tail light): 0.445 amps

Warranty

  • Lifetime LED warranty

STL179RB Optronics Thin Line Glo Light LED Trailer Tail Light - Stop, Tail, Turn - Waterproof - 17" Long - 28 Diodes - Red Lens





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Ratings & Reviews

4.8

47 reviews
5 Stars
(40)
4 Stars
(6)
3 Stars
(1)
2 Stars
(0)
1 Star
(0)
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by:
Very easy install on a 2025 Forrest River Wildwood. Wired directly in existing light wiring. Lights are durable, bright and actually look like they are OEM. A little pricey, but after a goat rope with prime, I'm all about the quality and reliability of this product. Very pleased in the end!!!
Andre profile picture

Andre

3/13/2026

My lights are working strong! They shine bright and no worse for the wear. Really have stood up to the elements quite well.

by:
The only other way to get a drivers attention would be to slap them up side the head!
Great looking, eye catching, extremely bright especially at night.
The only problem I had was one of the lights wasn’t water tight. After a rain storm, I found about 1/4” of water at the bottom of one. This was the same problem I had with a previous led light. Evidently the hermetically sealed light wasn’t hermetically sealed. I alleviated this problem by drilling a small (.016”) weep hole in the bottom.
I’ve taken a few pictures to show the quality and brightness of these lights.
Lights off, lights on during daylight and at dusk. The picture of the lights at dusk is not the intensity of brake lights but just taillights.
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by:
One of my old LED tail lights had a few diodes fail so I started the hunt for a replacement. I wanted something with a fairly bright output so people will know that I am there. I spent quite a bit of time searching the internet and reading reviews before arriving upon these. I was a little skeptical about the "glow" but I LOVE them. They more than exceeded my expectations. There is a version of these tail lights that have reverse lights and I almost got that for those dark nights when I put the trailer away. These put off enough general light it almost isn't needed, though it would still be nice so others would know if I was backing. I took the opportunity to replace all the trailer lights and bought the GloLight amber and red side markers as well. I am out in the country so at night there is almost no light pollution. It is nice to be able to see exactly where my trailer is at all times. I would buy these all day long. I actually own a second enclosed trailer and am considering putting these on even though those haven't failed yet. I have also purchased from etrailer in the past and always had a great experience and this was no different.
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by:
Two out of three of them are usually reliable, but one will almost surely go bad within a year or so. Otherwise they're great lights and look good.
by:
Great service like always from etrailer. The lights were exactly as described on the site. I used them as replacement lights on a Highway Products headache rack on my '12 F-450 pickup.
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by:
Great product. The video provided on the etrailer website helped out a lot. Light is nice and bright and a good replacement on my trailer.
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by:
Nicely made LED brake/turn & tail light. Sealed from moisture. Don't forget to order the silver base to mount the light. I was able to trim the base on each end so that the LED piece fit on a slightly curved surface. Without the base that would not have been possible. I mounted these lights on the rear of my truck topper for towing with my MH.
Joe profile picture

Joe

3/8/2020

The LED tail lights have been working great. Drove to Alaska and back from Florida and they worked just fine.

by:
The etrailer website is well-organized and informative, the company communicates very well, and the products I bought were exactly as described. They arrived on time, nicely-packed, and plugged into my project immediately. The LED lights are going on my rear-mounted bike rack. They're bright and full-featured (running, brake, turn) and waterproof.

This company is very professional in its business matters. I'll be back when I need their products. There should be a sixth star for top-performing companies like etrailer.com.

I'm very pleased. Thank you, etrailer.
by:
Greatplace
by:
Added these to my trailer for additional safety. Super bright and the glo is very cool.
by:
Good for replacement base of initial install of the glo marker lights. Mine have been on for a year - no problems. I also have used the lights with base included.
by:
These are great replacement tail lights! I only wish there was a slip of paper included stating which wire controlled which part of the fixture. Aside from making sure they worked, I didn't check it all before sealing everything. I would've flipped the wires, but that's just a personal preference.
by:
These are a very high-quality...
I love the glow they give off, unlike regular LEDs these are intense but not overwhelming and they really make my trailer visible day or night in just the tail light mode which was the biggest worry I had.
But when the brakes are applied it's so bright that there's no doubt I'll be stopping and nobody will be confused of that... I'm going to get more of these for the other trailers I have, they make me safer at night by far. And they are bright enough I really don't need backup lights, the glow is amazing...
by:
great product
by:
I've been very happy with the products from eTrailer, this is no exception. That being said, the similar LED lite that I'd purchased a few months ago has a better distribution of the lights over the full extent of the surface. This one is just concentrated in the middle. I was sorry to see the other brand go.
by:
What a great service I had personal attention for my order when i inquired about the status. Great work etrailer !!
by:
excellent brightness, but be careful not to overtighten your mounting screws. I broke one of the mount's plastic by over tightening.
by:
By far, the brightest combination taillights out there. Complete night and day difference from the original ones on my trailer. Total illumination of the entire lens, super bright!!
by:
This is the second purchase from etrailer. I'm glad my wife found this web site.
I've been very happy. My last purchase was a light for my boat trailer. Thank you
by:
The factory lights finally quit working ordered these lights can't believe how bright they are they work great and look good on the trailer. Too bad the factory couldn't use these from the start it lights up the back of the trailer so much better than Factory lights.
Brooke M. profile picture
Etrailer Expert

Brooke M.

12/4/2024

I think it would only be for the better if factories upgraded, too. Tell them to buy from us if you know any looking to change over! But seriously, its awesome to hear youre so happy with your new lights!

by:
Lights were exactly as described. Very bright and I am satisfied with my purchase. Would’ve hesitate in ordering them again.
by:
BOUGHT THESE FOR THE BACK OF MY SLEEPER FOR BETTER VISIABILITY WHEN I AM BOBTAIL. LIGHTS ARE EXTREMELY BRIGHT WHEN I TESTED THEM OUT. CAN'T WAIT TO GET THEM ON MY TRUCK
by:
I got these to replace similar lights that came on a trailer in 2007 and were not working as they were supposed to anymore.
by:
Always a pleasure to deal with E trailer everyone there is very nice very professional have used them several times in the past will continue to do so.
by:
Replaced lights on my 5 yr old trailer for third time with these, really well made. Super bright also !!
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