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Optronics LED Trailer Tail Light - Stop, Turn, Tail - Submersible - 6 Diodes - Oval - Red Lens
Optronics

Optronics LED Trailer Tail Light - Stop, Turn, Tail - Submersible - 6 Diodes - Oval - Red Lens

Part Number: STL12RB
In Stock
$9.18
Retail:$14.49
You Save: 37%
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6-1/2" x 2-1/4" Oval. Waterproof trailer light serves 3 functions: brake, tail, and turn. Durable polycarbonate lens and housing. Recessed mount with grommet (sold separately). Accepts standard 3-prong plug. Great Prices for the best trailer lights from Optronics. Optronics LED Trailer Tail Light - Stop, Turn, Tail - Submersible - 6 Diodes - Oval - Red Lens part number STL12RB can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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Optronics Trailer Lights - STL12RB

Highlights

  • One Light, 3 Functions: Provides stop, turn, and tail lighting in a single compact unit.
  • Reliable In Any Weather: Sonically sealed, waterproof housing keeps water out even when submerged.
  • Fewer Replacements Needed: 6 LEDs last up to 50 times longer than incandescent bulbs and draw less power.
  • Simple Power Connection: Accepts a standard 3-prong plug for quick hookup to 12V DC systems.
  • Easy Fit Upgrade: Recessed mount installs with a grommet in an existing 6-1/2" x 2-1/4" opening.
  • Road Legal: Meets DOT, FMVSS 108, and CMVSS 108 standards for compliant trailer lighting.

Features to know about

Brighter, More Efficient Lighting: 6-Diode LED Tail Light

Older trailer lights can fade or burn out fast, but this LED tail light gives you bright, reliable illumination every time. With six LEDs behind a red lens, it handles stop, turn, and tail functions all in one compact 6-1/2" x 2-1/4" oval housing. At 12.8V it draws only 0.161 amps for stop or turn and just 0.007 amps for tail, keeping power demand low while staying highly visible day or night. There are no bulbs to replace and no fragile filaments to worry about—just long-lasting performance that stays bright for years.

Built for Wet Conditions: Sonically Sealed and Submersible

If your trailer ever gets wet or sees ramp duty, this light is ready. The polycarbonate lens and housing are sonically sealed into one waterproof unit that keeps moisture out completely. That sealed design means the internal diodes and circuit board stay protected from spray, splashes, and full submersion. It’s a solid upgrade for trailers that work around water or in harsh weather without letting corrosion or leaks ruin your lights.

Clean Look and Secure Fit: Recessed Mount Design

A clean, flush look is easy with the recessed mount setup. This oval light installs using a grommet (sold separately) and sits neatly in the trailer body for a smooth finish that won’t snag straps or gear. If you’re replacing an existing light, you can often reuse the same hole; if not, just cut a new opening or use a mounting bracket to complete the job. It connects with a standard 3-prong plug for a quick, no-guess wiring hookup.

Durable Construction That Lasts: Polycarbonate Lens and Housing

Rough roads and vibration take their toll on cheap lights, but this one is built tough from clear red polycarbonate that resists cracking and UV damage. The sealed LED design means no bulb changes or maintenance—just consistent lighting that meets DOT and FMVSS/CMVSS 108 standards for safety and reliability. It’s a dependable choice when you want a light that stands up to the elements and keeps working trip after trip.

Specs

Dimensions

  • Length: 6-1/2"
  • Height: 2-1/4"
  • Thickness: 1-3/4"

Technical diagram of Optronics STL12RB oval red LED trailer tail light showing dimensions and design features for stop, turn, and tail functions.

Electrical

  • Diodes: 6
  • Power draw at 12.8V (Stop/turn): 0.161 amps
  • Power draw at 12.8V (Tail): 0.007 amps

Warranty

  • Lifetime warranty on LEDs

Recessed grommet mount trailer light installation diagram showing how the light fits into a trailer cutout for secure mounting.

STL12RB Optronics Fleet Count LED Trailer Tail Light - Stop, Turn, Tail - Submersible - 6 Diodes - Oval - Recesed Mount - Red Lens





Customer Satisfaction Score:

Ratings & Reviews

4.8

2198 reviews
5 Stars
(1897)
4 Stars
(205)
3 Stars
(46)
2 Stars
(19)
1 Star
(31)
Review sort icon
6-1/2" x 2-1/4" Oval. Waterproof trailer light serves 3 functions: brake, tail, and turn. Durable polycarbonate lens and housing. Recessed mount with grommet (sold separately). Accepts standard 3-prong plug.

by:

Bought these to replace the stock lights on my Haulmark car trailer and they are a big improvement. Much brighter and the install was really simple.



by:

They seem to work well but do not fit as snug as the ones I replaced. I will add to my review after I take my horse trailer on very bumpy mountain roads and find out if they are going to stay put.



by:

Works perfectly



by:

It was slightly smaller then my old one but the new grommet fit inside the old one and the light fit inside that. Done.



by:

Exactly what I was looking for and the shipping was fast. The way things should be done.



by:

The trailer light were just what I wanted. Very good price. Quick shipping.



by:

eTrailer is an awesome company to work with. I have order numerous parts from them and they never fail in providing the perfect part in reasonable amount of time. I recommend them for all your trailering needs or wants!



by:

The lights are good and standard size, but they seem to have a slightly off plug receptical. I ordered 6 of them and all seemed to be the same. I had to bend my connectors with a pliers a little bit to get them plugged in.



by:

I replaced my 24 diode lights from the same manufacture because they leaked but didn't fail. You cant open these lights so if you do get water in them like I did, you cant get it out so eventually they would have failed. Lets see how these 6 diode lights do.



by:

easy plug and play for a burned out light i needed to replace. Easy install and fast shipping to get me back on the road with lights



by:

Perfect fit for replacement of original taillights on my 18’ car hauler from Lone Wolf trailer co.



by:

These lights are sweet. They do not have the etrailer sticker on them if that discourages you. Now that these are installed I kinda want to replace all of the other lights to LEDs.



by:

I always use etrailer.com for my car, trailer and other accessories I need. I have obtained several items in the past and have been greatly pleased with the service, quality of their products and information that may be needed. I highly recommend them for your needs pertaining to what they have to offer. They are the "go to" place.



by:

For the cost I'd have thought it would have come with new pigtails, but a decent value none the less

Sierra K. profile picture

Sierra K.

11/30/2021

Here is the pigtail that matches this light, item # A45PB. Here is the kit that includes everything if needed, item # 3375626157. It is nice to have the option to just purchase the light if your pigtail wires are still in good condition.



by:

I recently ordered a pair of PVC grommets and tail lights for one of our trailers. The items arrived fairly quickly, and were packaged well. All of the items fit as advertised, and work as good as the original equipment. I will definitely be using etrailer again.



by:

Quick, correct quality part, fast shipping. Thanks guys!



by:

Very happy with the quality of Optronics LED trailer lights.



by:

great quality



by:

Mike profile picture

Mike

3/21/2024

Bright and durable,simple installation. Would benefit from longer wires as any product would.



by:

I got the correct item on time.



by:

Process of placing the order was easy and delivery was very quick. Good product!!



by:

Direct replacement for my original failed light. Delivered as promised at a fair price



by:

article exactly as advertised, reasonable and transparent shipping delays. would buy again from etrailer!



by:

Plug and play replacement for an old set of lights. Fit as expected.



by:

Fit just like factory OEM. No problems.


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See what our Experts say about this Optronics Trailer Lights

  • Replacement LED Tail Lights for 1990 Featherlite Horse Trailer
    You will be able to replace the incandescent lights on your trailer with LED without a problem. Like you said, you can just take the old lights out and replace them with new lights. If the Miro-Flex LED Combination Trailer Tail Lights - Submersible # STL28RB & # STL29RB you looked at would be a great choice assuming they are the style and size you want. These are surface mount lights so they will be able to mount in most places without a problem. The dimensions of these lights are 5-1/4"...
    view full answer...
  • Is Buyers Products LED Trailer Light w/ Grommet Available with the Light By Itself?
    Hey Andy, thanks for reaching out! The LED Trailer Light w/ Grommet # 3375626157 comes as a kit and isn't available separately, but we do have some alternatives like the Optronics # STL12RB you picked up the other day. I also see that you got the PVC Grommet # a70gb - were you just needing them separated out to make the installation easier?
    view full answer...
  • Recommended Replacement Recessed Mount Oval Tail Lights for Box Trailer
    The Optronics Fleet LED Trailer Tail Lights part # TLL12RK which install inside a 6-11/16" x 2-5/8" opening is the closest option we have for you and it comes with the needed grommet and pigtail for installation.
    view full answer...
  • Recommended Replacement Trailer Tail Light Close to 77-556R
    We do not have anything that is green, but there are many red options. Both the 77-556R & 77-556G you referenced have been discontinued. The Optronics LED Trailer Tail Light - Stop, Turn, Tail - Submersible - 6 Diodes - Oval - Red Lens # STL12RB is probably the closest look we have.
    view full answer...
  • Replacement For Wesbar 108121 Trailer Tail Light
    The Wesbar 108121 trailer tail light has been discontinued for some time, but we do have the perfect replacement for it. What you can use is a light from Optronics to replace it; the correct part number, along with its grommet, it is the following: - Optronics LED Trailer Tail Light # STL12RB - PVC Grommet # a70gb Then if you need the 3-wire pigtail for this light, the part is the Right Angle 3-Wire Pigtail # A47PB.
    view full answer...
  • Identifying Trailer Wiring By Function Colors Red, Brown, and Yellow/Green
    Typically for trailer wiring the yellow/green represents the stop/turn circuit, the brown is running light, so based on that your red wire is most likely ground.
    view full answer...
  • What Grommet Does Tail Light STL12RB Fit
    While I don't have any way of knowing what grommet you have, but the Optronics LED Trailer Tail Light - Stop, Turn, Tail - Submersible - 6 Diodes - Oval - Red Lens # STL12RB fits the PVC Grommet for 6-1/2" Oval Trailer Tail Lights # a70gb. If you already have a 6-1/2" x 2-1/4" tall oval trailer light and grommet, then yes, you can replace your light with the Optronics LED Trailer Tail Light # STL12RB. The only other thing you will need is the 3-Wire Pigtail for Optronics Trailer Lights # A45PB
    view full answer...
  • Availability Of 6-1/2L x 2-1/4W LED Tail Light With Curved Lens
    Hello Kathy, thanks for reaching out. So we do have an LED light in that size, the 6-1/2L x 2-1/4W Inch, but I am sorry to say we do not have anything with the arched top like the # ST70RB. All of our LED lights in that size have a flat front, like the Optronics LED Trailer Tail Light # STL12RB.
    view full answer...

Do you have a question about this Trailer Light?


Info for this part was:

Employee Jameson C
Expert Research:
Jameson C
Employee Jacob T
Video Edited:
Jacob T
Employee Chris R
Video Edited:
Chris R
Employee Kathleen M
Installed by:
Kathleen M
Employee David F
Installed by:
David F
Employee Dustin K
Video by:
Dustin K
Employee Daron K
Edited by:
Daron K
Employee Brian T
Written by:
Brian T

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