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LED Trailer Tail Light w/ Flange - Stop, Turn, Tail - Submersible - 6 Diodes - Oval - Red Lens

LED Trailer Tail Light w/ Flange - Stop, Turn, Tail - Submersible - 6 Diodes - Oval - Red Lens

Item # STL73RB
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Trailer Lights STL73RB - Submersible Lights - Optronics
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7-9/16" x 3-5/16" Oval. Waterproof, LED trailer tail light with 6 diodes provides stop, turn, and tail function. Durable polycarbonate housing and lens. Surface mount with built-in flange. 3-Wire design. Lowest Prices for the best trailer lights from Optronics. LED Trailer Tail Light w/ Flange - Stop, Turn, Tail - Submersible - 6 Diodes - Oval - Red Lens part number STL73RB can be ordered online at etrailer.com or call 800-298-1624 for expert service.
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  • Reviews (41)
  • Q & A (4)
  • Videos (1)
  • Photos
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Optronics Trailer Lights - STL73RB

  • Tail Lights
  • Oval
  • LED Light
  • Red
  • 7-9/16L x 3-5/16W Inch
  • Surface Mount
  • Submersible Lights
  • Optronics

7-9/16" x 3-5/16" Oval. Waterproof, LED trailer tail light with 6 diodes provides stop, turn, and tail function. Durable polycarbonate housing and lens. Surface mount with built-in flange. 3-Wire design.


  • Oval tail light provides stop, turn, and tail function
  • 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 housing and lens
  • Red lens over white LEDs
  • Compatible with 12V DC systems
  • Surface mount with built-in mounting flange - hardware not included
    • Available snap-on reflector trim ring (sold separately) removes the need for a separate reflector
  • 3-Wire design hardwires to trailer
  • DOT compliant


  • Dimensions: 7-9/16" long x 3-5/16" tall x 3/4" thick
  • Diodes: 6
  • Power draw at 12V:
    • Stop/turn: 0.161 amps
    • Tail: 0.007 amps
  • Lifetime warranty on LEDs

Optronics STL73RB Fleet Count Oval 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.

Surface-Mount Light

Surface Mount Trailer Light Installation Diagram

Surface-mount trailer lights install using a flange or bracket with mounting holes. These lights lay flat against the trailer surface and only require a small, often pre-existing hole, for wiring. Mounting hardware is used to secure the light to the trailer.

STL73RB Optronics Fleet Count LED Tail Light w/ Flange - Stop, Turn, Tail - Submersible - 6 Diodes - Oval - Surface Mount - Red Lens

California residents: click here

Video of LED Trailer Tail Light w/ Flange - 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 - Red Tail Light - STL73RB

Today, we're going to take a look at the Optronics Submersible Oval Three Function LED Trailer Tail Light. Now, this oval tail light will provide three functions, stop, turn, and tail light functions. It is a durable polycarbonate housing and lens, and it's sonically sealed waterproof housing and lens unit is submersible. It's a red lens over six white LEDs. And what's nice is the LEDs make great replacements for incandescent lights because they'll last 50 times longer. They are more efficient.

They'll provide brighter light with less power output. And, of course, no bulbs to replace, no brittle filaments to break. This light is compatible with 12 volt DC systems, and it is a surface mount design. You can see it has built-in mounting flange with the mounting holes in it. Now, the hardware to install this is not included.They do also offer a snap-on reflector trim ring that you can put onto this light.

We do sell it separate on our website. And if you snap that reflector ring on that, you don't have to have a separate reflector mounted on your trailer.This is a three-wire design, hardwires to the trailer. The black wire is for the tail light. White is for the ground and the red is for your brake and turn signal. Now, at the end of this video, I am going to hook this up to some power, just to show you how bright the light is and how it operates.

This light is DOT, Department of Transportation, compliant. Power draw at 12 volts for the stop and turn signal is 0.161 amps. Tail light is 0.007 amps.Give you a few dimensions on this. The overall dimension, including the mounting flange, going to be right at seven and a half inches long. Height of it is three and five-sixteenths inches tall, and the depth of it is right at seven-eighths of an inch.

Just the light itself, the length is six and three-eighths inches. Height is two and one-eighths inches.What we're going to do now is hook these wires up. We'll go ahead and take the tail light. Go ahead and hook that up. Go ahead and hook our ground up, and we'll go ahead and hook our brake and turn signal. With those all hooked up, we'll go ahead and turn on our power, and you can see with the power on, there's your light. What I am going to do is go ahead and turn off the overhead lights. With the overhead lights off, you can see there is your tail lights. And then when you hit your brakes, you can see how brighter they get. And then if you do your turn signal, that would be your turn signal. Again, you can see the six LEDs. Go ahead and turn back on our overhead light. Turn off our power.But that should do it for the review on the Optronics Submersible Oval Three Function LED Trailer Tail Light..

Customer Reviews

LED Trailer Tail Light w/ Flange - Stop, Turn, Tail - Submersible - 6 Diodes - Oval - Red Lens - STL73RB

Average Customer Rating:  4.8 out of 5 stars   (41 Customer Reviews)

7-9/16" x 3-5/16" Oval. Waterproof, LED trailer tail light with 6 diodes provides stop, turn, and tail function. Durable polycarbonate housing and lens. Surface mount with built-in flange. 3-Wire design.


These are extremely dim & barely visible in direct sunlight. I should have researched further as my OE trailer lights had 10 diodes & these only have 6. There is a more expensive product with same mounting that has 22 diodes, so I will now have to buy these :(


I broke my tail light on my new trailer and replaced it with this light. A year later and its still working good as new. I would recommend to anyone looking for a replacment light. Mine was a direct fit to my trailer(Legend Trailers).


they are going to work great on my off road trailer


The larger base helped me cover existing holes that were from an older large oval style light. The extra length of the base of these lights combined with the chrome trim ring coved all signs anything else was ever there. The 6 led diodes on low are very chill and at first I was thinking it wouldn't put out adequate light but when brake was applied omg lots of light for 6 diodes. Before and after pictures help under below


exactly like the one on my new 5th wheel, this one not full of water, dealer could not get yet, trailer to new. you guys had exact part and fast delivery


You guys are right on. The products are what they say and no miss orders. my orders have been there fast and before the time suggested. Doing great,keep up the good work.


Exactly the light that is used on a nitro boat trailer 2015.


They were easy to mount and work perfec t.


Nice replacement lamp.


This also was a light that I was unable to find from other venders till I came across etrailer. Extras satisfied with you guys. Thank you Bruce


You have great serves and good prices


Product is the perfect replacement part for my trailer! The dimensions in the description were a huge help! Product was delivered as forecasted and is now installed on my trailer! Great transaction!


The lights are very nice. I give it 4 stars because of the shipping/packing. Pretty flimsy box that was crumpled at arrival.


Great product and very helpful staff online with information


thanks got prod wed 12 aug 2020 already installed both new tail light love them will be orderen again,ralph.in tenn.


The light was exactly what I ordered. Good price.


Excellent light! No side view or side marker, but wasn't looking for that. Would purchase again.


Received LED tail light as scheduled. Lights were exactly what I was looking for. Tracking information was excellent. Very happy with etrailer.com. Would highly recommend them.


Fast service. Delivered early


Shipped fast, and just what I needed.


Great service, quick shippers


It came at fast pace and was just what I ordered.


thanks good service



Show More Reviews

Ask the Experts about this Optronics Trailer Lights

  • Replacement LED Tail Light for Triton Boat Trailer Part # 08478
    I was able to pull up some information on the Triton 08478 light that you mentioned and it appears that the LED Trailer Tail Light w/ Flange - Stop, Turn, Tail - Submersible - 6 Diodes - Oval - Red Lens # STL73RB is the same part. I've linked a photo with the dimensions of this light, but it is also an oval LED light with 3 wires like the 08478, so it should do the job for you. If you've got a different sized light just let me know and I can see what we have available that would work.
    view full answer...
    Image 1 for
  • What Reflector Ring Fits the LED Trailer Tail Light # STL73RB?
    I confirmed with my contact at Optronics that the reflector ring that you need for the LED Trailer Tail Light w/ Flange - Stop, Turn, Tail - Submersible # STL73RB is the Snap-on Reflector Ring for STL78RB Series LED Lights # A78RXB.
    view full answer...
  • Recommendations for Replacing Wesbar 105825 Boat Trailer Lights
    I may have an alternate solution for you, but the light that the Wesbar # 105825 lens will attach to has been discontinued from Wesbar. With that being said, the Wesbar Wraparound LED Tail Light for Trailers Over 80" # 271594 (passenger side) and # 271595 (driver side), though not exactly the same, is one that commonly replaces the 403028, which is the light the # 105825 attaches to.
    view full answer...
  • Is There An Amber Version Of The LED Trailer Tail Light STL73RB?
    I have a different option for you, but the LED Trailer Tail Light # STL73RB you were looking at is not available in amber. This is due to tail lights needing to be red to be in accordance with laws here in the USA. The closest amber light is going to be the GloLight LED Side Marker Light # STL175AMFB which is virtually the exact same size at 7-7/8" long x 3-5/16" tall and can be used as a side marker light and a turn signal if you desire. I included a video of the # STL175AMFB for...
    view full answer...

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Info for this part was:

Employee Jeff D
Installed by:
Jeff D
Employee Daron K
Edited by:
Daron K
Employee Brian T
Written by:
Brian T

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