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Optronics LED Trailer Tail Light - Brake, Tail, Turn - Submersible - Round - 12V/24V - Red
Optronics

Optronics LED Trailer Tail Light - Brake, Tail, Turn - Submersible - Round - 12V/24V - Red

Part Number: STL43R24B
In Stock
$19.51
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In Use/Installed

4-5/16" Waterproof light displays brake, tail, and turn signals on your trailer. Mounts in a cutout with a grommet (sold separately) and works with 3-prong plugs. Works with 12V and 24V DC systems. Great Prices for the best trailer lights from Optronics. Optronics LED Trailer Tail Light - Brake, Tail, Turn - Submersible - Round - 12V/24V - Red part number STL43R24B can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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  • Reviews (2223)
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  • Videos (2)
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Optronics Trailer Lights - STL43R24B

Highlights

  • One Light, 3 Functions: Provides brake, tail, and turn signals so others see every move.
  • Reliable In Any Weather: Waterproof build keeps the light working even on boat trailers.
  • Fewer Replacements Needed: 10-diode LEDs draw less power and outlast old bulbs.
  • Flexible Power Use: Works with both 12V and 24V DC systems for easy hookup.
  • Simple Plug Connection: PL-3 connector fits 3-prong pigtails like A45PB or A47PB.
  • Clean, Flush Look: 4-5/16" round recessed mount fits a grommet for a factory-style finish.

Features to know about

Brighter and More Efficient Lighting: 10-Diode LED Design

Upgrading from old incandescent lights means you get more visibility with less power draw. This round LED tail light uses 10 diodes to give you a strong, even glow for your tail light, then brightens instantly for brake and turn signals. At 12.8V, it only draws 0.208 amps for stop/turn and 0.027 amps for tail, so it’s much easier on your trailer wiring and compatible with both 12V and 24V DC systems. The LEDs are built for the long haul, backed by a lifetime warranty that keeps you on the road without worrying about burned-out bulbs.

No More Water Problems: Fully Sealed and Submersible

When water exposure is part of the job, this light is ready. The polycarbonate lens and housing are sealed to make it waterproof and submersible—perfect for trailers that roll through rain, slush, or down the boat ramp. With no gaps or vent holes to let moisture in, you can count on consistent performance even after repeated submersion.

Clean Look and Secure Fit: Recessed Mounting Setup

If you want a clean, low-profile finish, this light mounts flush into a cutout with a grommet (A45GB – sold separately). The recessed style keeps it protected from bumps while giving a factory-level appearance. You can also mount it using an optional bracket (BK45BB – sold separately) if cutting a hole isn’t an option. Either way, the round 4-5/16" diameter housing sits tight and looks neat once installed.

Simple Wiring That Just Works: Standard 3-Prong Plug Connection

No need to fight with complex wiring setups. The PL-3 connector works with standard 3-prong plugs like the A45PB straight or A47PB right-angle pigtails (sold separately). Just plug it in and you’re done—no extra adapters or confusion about which wire goes where. It’s all set up for a quick, reliable connection that keeps your lights shining when they should.

Specs

Dimensions

  • Dimensions: 4-5/16" diameter x 1-15/16" thick

Optronics round red LED trailer tail light showing dimensional measurements for diameter and thickness, demonstrating size for recessed mounting applications.

Electrical

  • Compatible with: 12V and 24V DC systems
  • Diodes: 10
  • Power draw at 12.8V (Stop/turn): 0.208 amps
  • Power draw at 12.8V (Tail): 0.027 amps

Close-up of Optronics PL-3 three-prong connector for LED trailer tail light, showing plug configuration for wiring connection.

Warranty

  • Lifetime warranty on LEDs

STL43R24B Optronics LED 12V/24V Combination Trailer Tail Light - Stop, Tail, Turn - Waterproof - 10 Diodes - Round - Grommet Mount - Red Lens





Video of Optronics LED Trailer Tail Light - Brake, Tail, Turn - Submersible - Round - 12V/24V - Red
Video Thumbnail Video Player Dialog

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




Video Transcript for Complete Breakdown of the Optronics LED Trailer Tail Light

Ryan: How's it going Ryan here etrailer.com. Today we're going to be taking a look at and showing you how to install the Optronics LED Trailer Tail light. This tail light is going to be either a great replacement or even an upgrade over a traditional style incandescent light, and that's because this one is an LED. And it's going to have 10 diodes, so it's going to be much brighter. It's also going to be fully submersible, but I do always recommend, if you plan on submersing the light, just to turn the power off to it before you go. And since these are LEDs, you're not going to have those brittle filaments to worry about with those traditional style incandescent bulbs.

And overall, the light's going to be really well built and last a really long time. The light's going and provide us with three functions. The tail lights, the turn signal, as well as the brake lights.And the light itself is going to be four and 5/16 of an inch in diameter, and it's going to be one and 15/16 of an inch thick. So that'll be from the lens to this plastic portion here that helps cover up our electrical connector. It's going to have a polycarbonate lens as well as a polycarbonate housing, which means it's going to be really reliable and lasting long time and that's a really common problem with a lot of lights like this one that we're actually replacing today.

As you can see that housing has a bunch of cracks in it and those cracks will allow moisture to get in and eventually ruin the light. The light is going to work with both 12 and 24 volt DC systems and it's going to accept the standard three prong plug. Now if your plug is actually damaged, you can find a replacement here at etrailer.com.So whether your old lights broken, burned out, or you're just ready for an upgrade, once you get this one put in, not going to have to worry about it. Speaking of which, let's go ahead and put it in together now. To begin your install, you're going to come back to the light that you're going to replace and get it removed.

In our particular case, it's going to be this one here. To get these out, what you can do is kind of just push on one side of it. That'll kind of free the light and if you have a grommet, you kind of just pop that out. It'll give you a little more room to work. Pull the light out and then we will disconnect it simply just pulling back on the plug.With the light disconnected, now would be a good time to kind of take a good look at your electrical connector here and make sure that the terminals are in good shape, which ours are.

Then we can grab our light and plug it in. Now the light already comes with some dielectric grease on the terminals. However, I like to add just a little bit more just because it can't hurt and it'll help prevent rust and corrosion. Want to do is just line up the terminals on it or connector at the back of the light. Just push it all the way down to connect it.So at this point, what we can do is grab our grommet, slide that over, push it back into the tail light buckets here, and just take our light and work that in as well. Now these can be a little tight, so you might have to just kind of carefully work that light in to get it fully seated. So with our light in place, it's always a good idea to test it. So we'll go ahead and put it to power and turn on our tail lights, our left turn, and our brake lights.And that'll finish up our look at and our installation of the Optronics LED Trailer Tail light.

Customer Satisfaction Score:

Ratings & Reviews

4.8

2222 reviews
5 Stars
(1918)
4 Stars
(206)
3 Stars
(47)
2 Stars
(19)
1 Star
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4-5/16" Waterproof light displays brake, tail, and turn signals on your trailer. Mounts in a cutout with a grommet (sold separately) and works with 3-prong plugs. Works with 12V and 24V DC systems.

by:

Perfect replacement for the til lights on my trailer. Thank you etrailer for having what I needed, and the detailed information to know it was the right part to order.



by:

Exact fit and an excellent replacement for the lights on my 2006 Ranger Boat trailer.



by:

Perfect fit and exact replacement for my 2008 Ranger Z21 trailer. Great price and fast shipping. Totally satisfied!!!



by:

Fit perfectly to on my boatmate trailer, no issues



by:

Everything I receive from trailer is top notch.



by:

Exact replacement, same size, didn't even have to drill new holes. Had looked at many other sites and couldn't find the right size till I checked Etrailer. Thank you so much



by:

The Optronics LED lights fit perfectly on my 2021 Keystone Outback. Installation was easy. It took longer to remove the old sealant.



by:

Replacing original tailights on 2018 ca mper.



by:

I have a 97 Cargo Mate and I wanted to make the conversion to LED lights. The lights and grommets were a perfect upgraded match. So much brighter and better peace of mind when traveling in inclement weather to be seen from behind. Everything was great quality and shipped fast



by:

Seamless! Everything was great from communication, on time delivery and easy installation. Thank you



by:

The lights were easy to install. They are bright lights, very visible in the sunlight.
We installed these on our older dump trailer, replacing the old lights.
They fit perfect, and look and work great.



by:

Great product. An exact copy of what I had installed on my enclosed trailer. It was an easy install with color matching wires. Great quality, easy install and an excellent price point. Can’t go wrong here folks.



by:

Nice fit on shore lander trailer.



by:

Perfect fit, fast delivery,great customer service from ETrailer.



by:

I just installed the new trailer lights on our Sundowner horse trailer. The lights are of good quality and replaced the original lights no fabrication needed. The wiring matched up well with the existing wiring.



by:

Perfect fit. Installation took longer than it should due to very poor previous repair performed at the dealer. Glad I chose, at 73 swf, to do rhe work myself. The first time I have had fully functional tail lights since buying in 2022. Woo hoo.



by:

Light was the same size as previous one on EZ Loader boat trailer. Easy to install and very bright. Original one made it 10 years and had moisture inside causing most of the LEDs to stop working.



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See what our Experts say about this Optronics Trailer Lights

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    Hey Scott, To replace your Atwood GH10-3E you'll want the Furrion RV Tankless Water Heater # FR93FR. This water heater can produce up to 144 gallons of hot water per hour. Since it's tankless you won't have to wait around for the tank to heat the water and can take a shower without having to be as conservative with the water. The dimensions I'm seeing show the GH10-3E being 15.5" H x 16" W x 21" D so you'll need to frame in the hole a bit with some 2 x 2's in order to mount the new...
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Info for this part was:

Employee Lindsey S
Updated by:
Lindsey S
Employee Carrie F
Updated by:
Carrie F
Employee Amanda K
Updated by:
Amanda K
Employee Jeff D
Installed by:
Jeff D
Employee Ryan G
Installed by:
Ryan G
Employee Joshua S
Video by:
Joshua S
Employee Dustin K
Video Edited:
Dustin K
Employee Daron K
Edited by:
Daron K
Employee Brian T
Written by:
Brian T

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