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GloLight Halo LED Trailer Light w/ Flange - Brake, Tail, Turn - Submersible - Oval - Red
Optronics

GloLight Halo LED Trailer Light w/ Flange - Brake, Tail, Turn - Submersible - Oval - Red

Part Number: STL178RFPB
In Stock
$39.07
Trailer Lights
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In Use/Installed

Customer Photos

This red GloLight is bright, easy to see, waterproof, and just looks cool. The outer band is a tail light and the center LEDs are a turn signal and brake light. Mounts with the built-in flange and comes with a 3-prong plug for quick installation. Great Prices for the best trailer lights from Optronics. GloLight Halo LED Trailer Light w/ Flange - Brake, Tail, Turn - Submersible - Oval - Red part number STL178RFPB can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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  • Reviews (442)
  • Q & A (0)
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Optronics Trailer Lights - STL178RFPB

Highlights

  • One Light, 3 Functions: Outer halo glows for tail, center LEDs handle stop and turn signals.
  • Reliable In Any Weather: Submersible, waterproof build keeps it working on wet roads or ramps.
  • Quick Plug-In Setup: Built-in flange and 3-prong plug make installation fast and simple.
  • Bright, Efficient LEDs: 22 diodes draw just 0.295A tail / 0.59A stop-turn for strong light with low power use.
  • Durable Construction: Polycarbonate housing and tinted acrylic lens resist impact and wear.
  • Road Legal: Meets DOT, FMVSS 108, and CMVSS standards for compliant trailer lighting.

Features to know about

Brighter and More Efficient Lighting: 22-Diode LED Design

Older incandescent bulbs can be dim and power-hungry, but this GloLight Halo LED Trailer Light changes that completely. It uses 22 bright LEDs that put out a clean, even red light for your brake, tail, and turn signals. At 12.8 volts it only draws 0.295 amps for the tail light and 0.59 amps for the stop/turn function, keeping your electrical system running efficiently. The halo ring glows for the tail light while the center LEDs flash for turn and brighten for braking—making your signals easy to see day or night.

Worrying About Water Damage: Fully Submersible and Sealed Housing

Water intrusion is a common killer of trailer lights, especially around boat ramps or in heavy rain. This light is built to handle it. The housing and tinted acrylic lens are sonically sealed, creating a waterproof design that keeps the electronics dry. Whether it’s a washdown or a full submersion, you won’t have to worry about corrosion or shorting out—this light stays reliable in wet conditions.

Replacing Old Bulky Lights: Sleek 7-1/2" x 3-5/16" Oval with Built-In Flange

If you’re upgrading from older lights, size and mounting often cause headaches. This oval LED light measures 7-1/2" wide x 3-5/16" tall x 1-1/8" thick and mounts cleanly using its built-in flange. It sits just 3/4" off the trailer surface for a low-profile look that doesn’t snag straps or gear. The polycarbonate housing adds durability while keeping weight down, giving you a modern, tough replacement that looks as good as it works.

Simplifying Wiring: Standard 3-Prong Plug Connection

Wiring work doesn’t need to be complicated. This GloLight comes pre-wired with an industry-standard 3-prong plug that connects directly to your trailer’s existing female plug. If you don’t already have one, you can pair it with the right-angle pigtail #A47PB or straight pigtail #A45PB (sold separately) for a quick and clean hookup. No cutting or splicing needed—just plug it in and go.

Back view of Optronics GloLight Halo LED Trailer Tail Light showing built-in flange and 3-prong plug connector for wiring installation.

Built for Safety and Reliability: DOT and FMVSS 108 Compliant

Safety on the road starts with visibility and compliance. This light meets DOT, FMVSS 108, and CMVSS requirements, so you can trust that it’s ready for highway use. With LEDs protected by a lifetime warranty, you’re getting long-term reliability built into every trip.

Specs

Dimensions

  • Overall dimensions: 7-1/2" wide x 3-5/16" tall x 1-1/8" thick
  • Light face dimensions: 6-7/16" wide x 2-5/16" tall x 15/16" thick
  • Light extends: 3/4" from trailer

Dimensional diagram of Optronics GloLight Halo LED Trailer Tail Light showing overall width, height, and mounting flange measurements.

Electrical

  • Diodes: 22
  • Power draw at 12.8 volts (Tail light): 0.295 amps
  • Power draw at 12.8 volts (Stop/turn light): 0.59 amps

Warranty

  • Lifetime warranty on LEDs

STL178RFPB Optronics Glow Light Trailer Combination Tail Light - Stop, Tail, Turn - Waterproof - 22 Diodes -6-1/2" Oval - Red Lens - 3-Wire With Standard PL3, 3-Prong Plug





Customer Satisfaction Score:

Ratings & Reviews

4.8

442 reviews
Review sort icon
This red GloLight is bright, easy to see, waterproof, and just looks cool. The outer band is a tail light and the center LEDs are a turn signal and brake light. Mounts with the built-in flange and comes with a 3-prong plug for quick installation.

by:

I haven’t put the lights on the trailer yet, but the service and pricing was great. This is my first time buy from etrailer.com but not my last.



by:

Top quality as expected from Optronics.



by:

This part was promptly sent and fits a 2022 Skeeter ZXR 21 trailer exactly and matched other factory taillight exactly.



by:

Deliver was quick and fit trailer just as advertised. Only took 10 minutes to replace.

Will order from etrailer again.



by:

Plug and play
Perfect



by:

All lights worked great on my popup trailer. The leds should work forever. WOW are they bright!!! Way to go Etrailer.
Shipping was fast also.



by:

Excellent product, was an exact replacement for what I have on my boat trailer. Perfect transaction & super fast shipping! I am 100% pleased! Thank you!



by:

Everything delivered on time and complete. Heavy duty suspension kit is a must.
Took all of the guesswork out of building a trailer from scratch.



by:

Love how bright they are. If you are planning a surface mount, as I did, you probably won't want a pigtail. Space was at a premium and my access holes are small. I just cut the connector leaving 3 inches and tied into the existing bundles.



by:



by:

The unique "glowing" running light ring is very visible and the stop/turn LEDs are very bright.
The light also came with an integrated standard connector, so no need to splice and/or purchase an additional connector.



by:

I had trouble trying to find this light.Then I called etrailer. The Representative really knew her stuff and found exactly what i needed. delivery was fast and the product was an exact replacement for the trailer light that broke.



by:

etrailer had a great selection of lights to choose from this model was on my new boat trailer unusual that it would go bad so fast. Had a hard time finding the exact replacement but these guys had it. Price was fair and delivery was quick. I will be purchasing more leds from them in the future



by:

This light was a Identical to the light that I had to replace. Happy - Happy

Alan profile picture

Alan

8/1/2023

The light replacement was identical, works fine and no issues. Im very Happy.



by:

The tail light description and measurements are spot-on. Plug- in worked correctly and LED lights function great. The long processing time (2 weeks) from order to delivery was unexpected.



by:

Fit perfect. Easy install



by:

Very good product. Waterproof, very bright, and I like the way the running light is around the outside of the light, and the turn and brake light is on the inside. Great way of doing things.



by:

Great product. Easy plug and play install from my previous lights. Very bright and a lot more secure than the existing lights. I ordered one thinking they were a pair? I guess that is on me, but it would be helpful if that was spelled out a little better. For sure happy with the product and I would purchase again.

Mike L. profile picture
Etrailer Expert

Mike L.

6/3/2019

This lamp is sold in a quantity of one, as is stated in the product description.



by:

Great product....I installed the light on my boat trailer and so far i haven't been disappointed.
However I would recommend to the manufacturer that they need to do a better sealing the tail light so as to prevent the water from seeping into the light fixture.



by:

they are great! no troubles whatsoever .I have then on my boat trailer (20) on a 16 footer, even 2 clear ones for back up lights. I beat on them never even unplug them when i put it under the water to launch or land the boat ,,,,,,,,
Also on my flat bed still adding ones on it lol.



by:

Tricia was very helpful and pleasant
She made sure I got the right replacement light. I know who to call now for my trailer light parts.



by:

I was replacing tail lights annually before upgrading to the GioLights. Highly recommended!



by:

These are awesome lights, but, did not fit my EZ Trailer so I installed them on my utility trailer. Works great and very bright.



by:

Easy install. Work perfectly. Look great on our Skeeter boat trailer.



by:

Upgrading our 1998 Coleman Grandview, the old incandescent just seemed too dim.
Nice light, only suggestion would be to list some wiring options, was a bit confusing going from the old Bargman to the new LED.
But I read through the Bargman page here and got squared away.

Pic is LED before anchoring compared to the stock on the right. BIG improvement.

Derek P. profile picture

Derek P.

7/19/2021

Still great, nice and bright. They are a huge improvement over the factory incandescent signals.


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See what our Experts say about this Optronics Trailer Lights

  • GloLight LED Tail Light Compatibility with 2018 Coachmen Clipper ST108
    The GloLight LED Trailer Tail Light - Stop, Tail, Turn - Submersible - 22 Diodes - Oval - Red Lens # STL178RFPB is most likely a fit for your 2018 Coachmen Clipper ST108. The best way to confirm fit is to check the mounting hole locations. The mounting holes are 7 inches on center and 2-11/16 inches on center. I've attached a photo to assist. Then you can use the Snap-on Reflector Ring for STL78RB Series LED Lights - Red # A78RXB or the chrome ring # A78CB.
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    Hello Barb. Generally with that kind of light you can pry off the grommet and light with a screwdriver or plastic pry tool. A lot of times if you have access to the light from the back side they can be a lot easier to remove. Removing the grommet may reveal some mounting screws depending on what kind of light that is.
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    The GloLight LED Trailer Tail Light - Stop, Tail, Turn - Submersible - 22 Diodes - Oval - Red Lens # STL178RFPB you were looking at is a flush mounted light that bolts directly to your trailer, and only requires a hole for the wiring to pass through. This light is 7-1/2" wide and 3-5/16" tall with horizontal bolt holes 7" apart, and the upper and lower bolt holes are 2-11/16" apart. If this matches the lights you currently have on your Skeeter Boat trailer this would be a great replacement...
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    We can get you all the lights you need though it will come in the form of different parts because there isn't a specific "kit" containing everything. For the stop/turn/tail lights you can use the GloLight LED Trailer Tail Light # STL178RFPB; this is a surface mounted light that is 7-1/2" wide x 3-5/16" tall x 1-1/8" deep and has an industry-standard 3-prong plug to connect to your trailer. Then for your clearance lights you can use # MCL-91AK, which is amber and measures 2-1/2" x 1-3/16"...
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  • Recommended Optronics Tail Light With 3-Prong Plug Attached
    I do have options for you. We have the Optronics # STL78RPG, which is essentially the Optronics LED Trailer Tail Light # STL78RB with a 3 prong attached. We also have the GloLight LED Trailer Tail Light # STL178RFPB. This light is identical in size to the light you mentioned, and will come with the 3 prong plug attached. The only difference is that the # STL178RFPB is a 22 diode instead of a 10 diode, so it will be a brighter light.
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  • Which Wiring Harness Will Be Needed to Install the Optronics GloLight LED Trailer Light STL178RFPB
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  • What Light Assembly Does Snap-on Reflector Ring # A78RXB Fit
    Although the Snap-on Reflector Ring, # A78RXB, will not fit the STL178 series lights like the Optronics GLOLight LED Stop/Turn/Tail Light # STL178RFPB, I do have a solution for you. Take a look at the Sealed, 6-1/2" Oval LED Trailer Stop, Turn and Tail Light, # STL78RB. This light was designed to be used with the reflector ring. I spoke with my contact at Optronics and they do not offer a reflector ring for the STL178 series lights. The lights look incredibly similar but the light you...
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    Although the Snap-on Reflector Ring, # A78RXB, will not fit the STL178 series lights like the Optronics GLOLight LED Stop/Turn/Tail Light # STL178RFPB, I do have a solution for you. Take a look at the Sealed, 6-1/2" Oval LED Trailer Stop, Turn and Tail Light, # STL78RB. This light was designed to be used with the reflector ring. I spoke with my contact at Optronics and they do not offer a reflector ring for the STL178 series lights.
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    For a replacement light that is the same size as your ST70RBTK I have two options. One is the Optronics Trailer Tail Light - Stop, Turn, Tail - Submersible - Incandescent - Oval - Red Lens # ST70RB and the other is the Optronics LED Trailer Tail Light - Stop, Tail, Turn - Submersible - 48 Diodes - Oval - Red Lens # STL70RB. The real difference here is sticking with an incandescent light or adding LED lights. Both of these lights have the same measurement of the discontinued ST70RBTK which...
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  • Parts Needed to Add Light Kit to Bike Rack
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  • Parts Needed to Install GloLight LED Trailer Tail Light # STL178RFPB to Trailer Wiring
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Do you have a question about this Trailer Light?


Info for this part was:

Employee Tricia G
Written by:
Tricia G
Employee Jameson C
Expert Research:
Jameson C
Employee Jacob T
Video Edited:
Jacob T
Employee Dustin K
Video Edited:
Dustin K
Employee Chris R
Video Edited:
Chris R
Employee Cole B
Installed by:
Cole B
Employee David F
Installed by:
David F
Employee Brian T
Updated by:
Brian T
Employee Amanda K
Updated by:
Amanda K

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