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Optronics LED Trailer Tail Light - Stop, Tail, Turn - Submersible - 10 Diodes - Round - Red Lens

Optronics LED Trailer Tail Light - Stop, Tail, Turn - Submersible - 10 Diodes - Round - Red Lens

Item # STL43RB
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Optronics Trailer Lights - STL43RB
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4-5/16" Diameter round. 3-Function, waterproof LED light acts as a brake, tail, and turn signal. Durable polycarbonate housing and lens. 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, Tail, Turn - Submersible - 10 Diodes - Round - Red Lens part number STL43RB can be ordered online at etrailer.com or call 800-298-8924 for expert service.
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  • Reviews (64)
  • Q & A (18)
  • Videos (2)
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Optronics Trailer Lights - STL43RB

  • Tail Lights
  • Round
  • LED Light
  • Red
  • Recessed Mount
  • 4 Inch Diameter
  • Optronics
  • Submersible Lights
  • Stop/Turn/Tail

4-5/16" Diameter round. 3-Function, waterproof LED light acts as a brake, tail, and turn signal. Durable polycarbonate housing and lens. Recessed mount with grommet (sold separately). Accepts standard 3-prong plug.


Features:

  • Round 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 clear LEDs
  • Compatible with 12V DC systems
  • Recessed mount with grommet (A45GB - sold separately)
    • Mounts in any 360 degree position
  • Accepts industry standard 3-prong plug (A45PB or A47PB - sold separately)


Specs:

  • Dimensions: 4-5/16" diameter x 1-15/16" deep
  • Diodes: 10
  • Power draw at 12.8V:
    • Stop/turn: 0.360 amps
    • Tail: 0.030 amps
  • Lifetime warranty on LEDs


Manufacturer Cross Reference
Light will work as an exact replacement for:
Truck Lite # 44302R
Grote # 53252
Peterson # M417R-2


Optronics STL43 Series Round LED Tail Light Dimensions

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 mount light

Recessed-mount trailer lights install underneath a housing or a grommet (A45GB - sold separately). These lights will extend into the mounting surface and require that a hole be cut into your trailer.



STL43RB Optronics LED 12V Combination Trailer Tail Light - Stop, Tail, Turn - Submersible - 10 Diodes - Round - Grommet Mount - Red Lens

Alternate part number: STL-43RB






California residents: click here


Video of Optronics LED Trailer Tail Light - Stop, Tail, Turn - Submersible - 10 Diodes - Round - Red Lens

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




Video Transcript for Optronics Trailer Lights - Tail Lights - STL43RB Review

Today we're going to review part number STL43RB. This is the Optronics Sealed 4-inch round LED Trailer Stop and Turn Taillight. This is a sealed flush mount round LED combination stop turning taillight. The LEDs in this light are a super diode which is exceptional brightness and performance. This light does meet the FMVSS108 requirements in any 360-degree position. The lens and the housing are one unit.

They are sonically sealed and waterproof which will provide protection for the two diodes. This molded plastic housing and durable lens will provide all weather protection against corrosion. Both the lens and diodes on the inside are red and these diodes will draw 0.413 amps at 12.8 volts when the stop and turn light is on and it'll draw a 0.026 amps at 12.8 volts when just the taillight is on. This light does flush mount an uses a wiring on the back will use an industry standard three-throng plug like this one here which is sold separate and a mounting grommet is also required which is sold separately. A few dimensions I'll give you on this light is the overall from side to side diameter will be 4 15/16 and just the light part in front will 4 inches.

The depth is 1 inch and also the measurement of the depth of it including where the connector goes that would be 1 15/16. And now I'm going to give you a quick demonstration of what the light brightness would be. First we'll plug in the three-throng plug and we have our 3 wires and I got a power supply here. We'll connect the white which is the ground, we'll connect the black which is the taillight and that's the brightness of the taillight. And then we'll connect the stop and turn and that's how the stop and turn brightness would be.

And then what I'm going to do is turn off the overhead lights and that will give you the idea of the brightness in the dark for the taillight and that would be the stop and turn. And that should do it for part number STL43RB.


Customer Reviews

Optronics LED Trailer Tail Light - Stop, Tail, Turn - Submersible - 10 Diodes - Round - Red Lens - STL43RB

Average Customer Rating:  4.8 out of 5 stars   (64 Customer Reviews)

4-5/16" Diameter round. 3-Function, waterproof LED light acts as a brake, tail, and turn signal. Durable polycarbonate housing and lens. Recessed mount with grommet (sold separately). Accepts standard 3-prong plug.

- STL43RB
by:

eTrailer.com did a Terrific Job for us! We needed tail lights for the Dune Buggy we're building in three different collors (red, amber & clear), and eTrailer was able to provide these for us in otherwise identical lights. We received everything we needed (all of the right appurtanances) and they look great! We were also impressed with the timeliness of etrailer.com's shipping and delivery, as we received our order far more quickly than promised or anticipated. The License Plate Holder and Light also look great! (Although the light is a little dim.) Overall high marks, and I would use eTrailer.com and Optronics again. 67757



- STL43RB
by:

I am in the process of renovating a 1966 Airstream. I wanted to upgrade the tail lights and the clearance lights. I found etrailer.com on a web search. I ordered the round 4" LED, rubber 4" grommet, and Oval LED clearance light. The round stop with grommet adapeted perfectly into the lens on the Airstream. I will feel so much safer now with the added visability. The lights are stellar. 45989



- STL43RB
by:

Ordered two, one had misguided plugs and would not work with my installed 3 prong male plug, the second finally plugged in with difficulty, but the light worked when installed. Glad I ordered two as just needed one now, and the second was a spare for future use. All through the order process the company offered great service and very quick shipping. Probably will use them again in the future for needed parts in a hurry. 700396



- STL43RB
by:

Although UPS is a little rough on packages, everything arrived unbroken. The only thing I didn't realize was that there was not any pigtails for these tail lights. Everything else was great. I'll see about chasing down the pig-tails from the local trailer dealer. 677104



- STL43RB
by:

Received in a timely manner. The product was exactly as described on the website. Very pleased with the taillight. 671286



- STL43RB
by:

Product delivered on time and was packaged properly. Installed on a tow dolly and was an exact fit, making installation a breeze. 664696



- STL43RB
by:

Fit perfect but, more important, increases visibility over the old bulb lights. 638202



- STL43RB
by:

Easy to install and worked well. I recommend this light. 634293



- STL43RB
by:

These light are great quality and shipping was extremely fast. I only needed one but purchased 4 and changed all my brake lights over to LED. I also appreciate the plethora of information with regard to issues installing this item. I had a little trouble fitting them back in my existing grommet, but your videos were very helpful. We have used etrailer several times. It's our go-to. Thanks again! 598553



- STL43RB
by:

great 583386



- STL43RB
by:

just as ordered and on time 582169



- STL43RB
by:

Great product! Great delivery! Great customer service! Need I say more? Patrick 579321



- STL43RB
by:

Product was delivered on time and in great condition Thank you 544967


Comments
Lights are working great no problems
Louis - 07/23/2019

58101

- STL43RB
by:

I originally purchased the wrong item but was told how to return it quickly. I then ordered the correct item and received it right away. I am very pleased with their service and product and would refer others who need to find items fast. They know their stuff Thank you 541914



- STL43RB
by:

Great prices just what I needed fast delivery thanks 467415



- STL43RB
by:

Great lights, great price, even better service!! 461366



- STL43RB
by:

great price , good product , always a follow up e-mail about their service, fast shipping 452051



- STL43RB
by:

Works like they should no problems 436071



- STL43RB
by:

Received have not installed them yet should be ok. 425517



- STL43RB
by:

Just what I expected 411326



- STL43RB
by:

Order lights for my RV, works great, looks good, just what I needed. Shipment was very fast on this order. Will use this company again. Fair priced also. 409968



- STL43RB
by:

Nice being able to track package with the link I was given. Arrived and worked fine. It was all I expected no complications. I will order from here again plain and simple. 372010



- STL43RB
by:

no problem with anything we have gotten from etrailer gets equipment back on road quickly 368319



- STL43RB
by:

The products came in quicker than I expected and are of good quality. I am very satisfied with this company 344844



- STL43RB
by:

Works great 343627


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Show More Reviews

Ask the Experts about this Optronics Trailer Lights

  • Replacement Tail Light For Forest River Georgetown XL RV
    I'd be happy to assist you. It sounds like you need the Sealed, Flush Mount Tall Rectangle LED Trailer Stop, Turn and Tail Light, Grommet and Plug, 12 Diode # STL34RB but most of the pictures I see have round tail lights like the Sealed, 4" Round, LED Stop/Turn/Tail light, 21 Diode - Red # STL55RB. If this is not the correct part, then send me a photo with the measurements of the light and we will get you what you need. The numbers and letters that are actually printed on the light...
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  • 4 inch Round 24 Volt Trailer Clearance Light
    For a 24 volt version of the light you referenced you would want the part # STL23R24B as this light can be used on a 24 volt circuit.
    view full answer...
  • Recommended Load Resistor for Installing Optronics LED Trailer Light STL43RB
    When high-efficiency LED type lights are installed in place of power-hungry incandescent bulbs it is often necessary to install a load resistor. The resistor turns some of the incoming power into heat and in doing so it mimics the higher power draw of an incandescent bulb. This will prevent the hyper-flashing common when LEDs are installed in an incandescent lighting system. For the Optronics Round LED Trailer Stop, Turn and Tail Light # STL43RB you can use their load resistor kit #...
    view full answer...
  • Installing Trailer Tail Lights with Two Wire Connections on 4-Way Wiring
    They are single function lights, so they can be used as running lights or stop/turn but not both. So for your trailer to be legal, you will need to run two on each side, one for the running light (brown wire of your 4-way) and one for the turn/stop light (green or yellow wire of your 4-way depending on side of the trailer). You will attach the power wire (green, yellow, or brown) to the red wire of your light. The white wire on your light will go to ground, so you will attach it to the...
    view full answer...
  • Tips for Installing New Trailer Clearance Light into Rubber Grommet
    Getting light assemblies into the grommets can be somewhat challenging. We have found that if you insert the grommet first (like you did), and then put a light amount of grease around the grommet edge the light will slide in easier. If you check out the video I attached you can see one of our installers walk through this process. Fast forward to the 1:45 mark.
    view full answer...
  • Troubleshooting 3 Wire LED Tail Light Installation
    Your old two wire lights definitely used the mounting screw as the ground. Your new LED lights with 3 wires will be easy to transition. You will connect the running light wire and the turn/stop wire just as before, and then you will run the ground wire directly to your steel frame. A bad ground is most likely the issue with your fuses blowing. Make sure your ground wire to your frame is metal on metal and your 3 wire LED lights like # STL43RB with 3 wire pigtail similar to the # A45PB....
    view full answer...
  • Can Bulb be Replaced on Peterson Red Flush Mounted Sealed Turn Signal Light 435800
    Peterson brake/turn signal light # 435800 is sealed and cannot be opened up to change out the bulb. I pulled one from the warehouse to verify this and cannot get the lens off (without breaking it) to access the bulb/interior of the light. What I recommend is to use an LED light, # STL43RB, because the LEDs will last much longer than a regular incandescent bulb. For a grommet use # A45GB and for a wiring harness use # A45PB.
    view full answer...
  • Is the Optronics LED # STL43RB the Correct Replacement for Peterson 426 Taillight
    The Optronics LED Taillight you referred to, part # STL43RB would indeed be a correct replacement for the Peterson 426 lamp you referred to. The # A45GB would be the correct replacement grommet and for a pigtail, you'd use part # A45PB. The LED replacement would be a great option, as they use a lot less power, would last much longer and are quite a bit brighter than their incandescent counterparts.
    view full answer...
  • Recommended Three-Prong Wiring Plug For Optronics Sealed Round LED Trailer Light # STL43RB
    We do have the three-prong pigtail you can use with the Optronics Trailer Light # STL43RB. You will need part # A45PB. This has the three-prong plug with 10 inches of wire.
    view full answer...
  • LED Replacement Light Recommendation For Bargman 68 Round 4-1/2 Inch Trailer Lights
    We have four different round LED stop, turn and tail lights that will fit in the 4-1/2 inch diameter holes in your rear bumper. You could use the Optronics light, # STL23RB, # STL43RB, # STL53RCB or # STL23CCRB. These are 4 inch round lights, but they require a rubber grommet, # A45GB, that allows 4 inch round lights to flush mount in a 4-1/2 inch cutout. Lights # STL43RB and # STL53RCB are sealed, submersible lights if you are adding these lights to a boat trailer. All of these lights...
    view full answer...
  • Replacement 4 inch GloLight Trailer Light Recommendation
    It sounds like you are looking for the GloLight Trailer Tail Light # STL101RB which is a 4 inch diameter GloLight trailer light. I attached a review video for you to check out as well.
    view full answer...
  • Trailer Tail Light Replacement for a Trulite model 44 LED Tail Light
    From my research it looks like the Submersible LED Optronics Trailer Light # STL43RB is a comparable replacement light. It is 4-5/16" in diameter and has 10 super diodes that function as stop, turn, and tail signals. You can install the light using a Pigtail, like part # A45PB or part # A47PB, and a Rubber Grommet # A45GB. A sample installation video has been linked for you to use as a reference.
    view full answer...
  • Trailer Wiring and Lighting Replacement for Trailer with 4.5 inch Red and 2.5 inch Amber Light
    For a 4-1/2 inch diameter trailer taillight that can do stop/tail/turn functions we have the part # STL43RB which would work well. For a rubber grommet then we'd need the part # A45GB. Then for a pigtail harness you'd need the part # A47PB. For the 2-1/2 inch amber lights you'd want the part # MCL59AB and for a grommet for this you'd need part # A55GB. For a pigtail for this you'd want part # A46PB. Then for 4-way wiring sold by the foot you'd want the part # 16-4B-1.
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  • What is Included with Optronics 4 Inch Round LED Tail Light
    The Optronics 4 Inch Round LED Tail Light # STL43RB does not come with a pigtail. For a 3-Wire Pigtail with a 3-Prong Plug # A45PB is what you'll need. If you'd like the rubber grommet then # A45GB is what you're looking for.
    view full answer...
  • Tow Dolly LED Brake Lights Blow Stop Light Fuse on RV But All Other Lights Work Fine
    There could be a short somewhere inside one of the lights causing the problem. There certainly is not enough power draw from LED lights to blow a stop light fuse on a vehicle so it would have to be a short somewhere. If everything works fine with a trailer connected and all of the other tow dolly lights work as they should then all signs point to an internal problem with the lights. My recommendation is to replace the lights and inspect the wiring (just to be safe) and fix any broken...
    view full answer...
  • Recommendation for a Bright LED Tail Light that Can Be Used on a Motorcycle
    Round LED Trailer Stop, Turn and Tail Light, # STL43RB, has 10 diodes in it that produce the light. If you are looking for more light, you may want to look at something with more diodes. The Round, Stop/Turn/Tail Light, # STL23CCRB, has 12 LEDs and a clear lens with the Miro-Flex design for maximum light output. It has the same dimensions as the STL43RB and can use wiring harnesses, # A45PB, or # A47PB.
    view full answer...
  • Can Sealed 4" Round LED Trailer Light # STL43RB Be Used Underwater in Saltwater Environment
    I spoke with my contact at Optronics and in order to use the Sealed, 4" Round LED Trailer Stop, Turn and Tail Light, # STL43RB, in the saltwater environment, you will want to use marine grease like part # L11404 on the Straight 3-Wire Pigtail Plug, # A45PB, and then seal around the plug with a silicone sealant like part # 0160297. This will help to prevent any water from getting into the light housing during the constant in and out of saltwater service that your boat gets.
    view full answer...
  • Replacement LED Tail Light For Pacific Trailer
    We have LED trailer lights available. If you have the dimensions of the light you want to replace that would help in finding the right replacement for your Pacific trailer. From my research I found that some of the Pacific trailers use part # STL42RB. This is a 4-inch round flange mount light that has 10 LEDs. It is a three function stop/turn/tail light. If you need a flush-mount light, we also have part # STL43RB. this is also a 3-function 10-LED light. If you are looking for...
    view full answer...

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Info for this part was:

Video Edited:
Zack K
Expert Research:
Michael H
Expert Research:
Jameson C
Expert Research:
Adam R
Updated by:
Laura H
Updated by:
Sarah W
Updated by:
Brian T

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