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

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

Item # STL12RB
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Optronics Trailer Lights - STL12RB
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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. Lowest 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 or call 800-298-1624 for expert service.
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  • Reviews (54)
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  • Videos (2)
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Optronics Trailer Lights - STL12RB

  • Tail Lights
  • Oval
  • LED Light
  • Red
  • 6-1/2L x 2-1/4W Inch
  • Recessed Mount
  • Stop/Turn/Tail
  • Submersible Lights
  • Optronics

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.


  • Oval LED trailer tail light serves 3 functions
    • Stop light
    • Tail light
    • Turn signal light
  • Sonically sealed, waterproof housing and lens unit is submersible
  • 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 polycarbonate lens and housing
  • Red lens over white LEDs
  • Compatible with 12V DC systems
  • Recessed mount with grommet (A70GB - sold separately)
  • Accepts industry-standard 3-prong plug
  • DOT compliant
    • Meets FMVSS 108 and CMVSS 108 requirements for automotive lighting


  • Dimensions: 6-1/2" long x 2-1/4" tall x 1-3/4" thick
  • Diodes: 6
  • Power draw at 12.8V:
    • Stop/turn: 0.161 amps
    • Tail: 0.007 amps
  • Lifetime warranty on LEDs

Optronics STL12RB Series 6 Inch Oval Sealed LED Tail Light Diagram

Sonically 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 housing and lens are sonically sealed together to create a single unit, which means that water will not get into the light and damage the diodes or circuit board.

Recessed-Mount Light

Recessed Grommet Mount Trailer Light Installation Diagram

Recessed-mount trailer lights install with a grommet, which is often sold separately. These lights extend past the trailer surface and require a hole for installation. If replacing a light, you can utilize the pre-existing hole. If installing a new light, you will need to cut a hole or use a mounting bracket (sold separately) to complete the installation.

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

California residents: click here

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

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

Video Transcript for Review of Optronics Trailer Lights - Submersible LED Stop Turn Tail Light - STL12RB

Ellen: Hey everybody. I'm Ellen here at, and we're going to be taking a quick look at the Optronics stop, turn, and tail light for your trailer. This gives you a really reliable light that offers those different functions. I'm going to turn this on so you can actually see what it looks like when it's illuminated. The thing that I also like about this is that it's a LED light that's submersible, so you shouldn't really have to worry about ever needing to change any bulbs with this like you would with an incandescent light, and you can use this on a marine trailer. Even if you're not, if you're just going to be putting it on an irregular trailer or an enclosed trailer or anything else, just the fact that it's submersible means that it's going to be really long-lasting and that there's nothing that's going to be able to get in there and cause any issues.So let's take a little closer look and talk about some more of the details.

Right now I have it illuminated, but this is just the running lights circuit. If you hit the brakes or you hit your turn signal, it does get brighter, so it offers that function. Turn the lights out in the studio, get a little better idea of how bright that is. Running lights, and then brake or turn signal. So it's just a three-wire design.

I have it hooked up to a plug from Optronics to make that a little bit easier. This is sold separately. You can find those here at And it's just a little plug that has the three wires coming off of it. So again, it creates a nice seal with the back of that light.

And once you have this wired in, it's pretty easy to put that light in place.So if you already had this wiring on your trailer and you're just replacing a similar light, that's all you've got to do is just plug that guy in. I like the right angle style, just because it's going to push the wires away. So if you want to get that as well, that is the part number for it. And again, you can find that here at As far as the specs with this light, it is a polycarbonate lens and housing.

It's a red lens over white LEDs inside, compatible with 12 volt DC systems. You can also get a recessed grommet so you can do a recessed mount with this. That's also sold separately, and that part number is A70GB. And you can, again, find that right here. It's DOT-compliant, meets FMVSS 108 and CMVSS 108 requirements.Those are just requirements for the US and for Canada as far as automotive lighting. As far as the size, our light measures about 6.5" long and then about 2.25" wide. The lens itself is a little bit shallower than the housing that it goes into, so that's why it's a little bit bigger. And then the depth is roughly 1.75" thick. We go from the front to the back here of that prong. Has six diodes in total. The power draw at 12.8 volts for the stop and turn is 0.161 amps for the tail. It's 0.007 amps, 0.007. It does have a limited lifetime warranty on the LEDs. And that's really about all there is to it for our look at the Optronics led trailer light. I hope this has been helpful in deciding if this is the right light for you. We do have a lot of options for lights and accessories here at, so check them out. Thanks for watching.

Customer Reviews

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

Average Customer Rating:  4.8 out of 5 stars   (54 Customer Reviews)

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.


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

Here is the pigtail that matches this light, item # A45PB
3-Wire Pigtail for Optronics Trailer Lights - 3-Prong PL-3 Plug - 10" Lead
. Here is the kit that includes everything if needed, item # 3375626157
LED Trailer Tail Light with Grommet - Stop, Turn, Tail - 6 Diodes - Oval - Red Lens
. It is nice to have the option to just purchase the light if your pigtail wires are still in good condition.
-- Etrailer Expert Sierra K - 11/30/2021


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.


Very happy with the quality of Optronics LED trailer lights.


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.


This is made from good materials and should last me many years of service on my utility trailer. The life-span will depend on how much winter trailering I do as the road salt used up here in Ontario, gets into everything.


Exactly as the image indicated


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!


Product arrived exactly as described. Easy installation


very pleased great job


I always use 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.


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


Just what I needed for my trailer.


Fit great just what I needed


It was just the right size and easily replaced the broken light.


what type of hookups do I need to plug in the back of the lites?

Thank you for your review. We have different lead lengths and angles but here is an example of the plug you need:
-- Etrailer Expert Sierra K - 06/18/2021


Needed this expedited and they did not delay in shipping. Item arrived just in time, thank you!


I was able to replace my old lights with these new ones with absolutely no problem These lights are so much brighter LED is the only way to go


Perfect match


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.


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.


Exactly what I needed, at a good price


It's what we ordered and works great


Fast shipping and excellent product.. Exact fit



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Info for this part was:

Employee Jameson C
Expert Research:
Jameson C
Employee Jacob T
Video Edited:
Jacob T
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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