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Optronics Streamline LED Trailer Tail Light - Submersible - 3 Function - 11 Diodes - Red Lens

Optronics Streamline LED Trailer Tail Light - Submersible - 3 Function - 11 Diodes - Red Lens

Item # STL79RB
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Trailer Lights STL79RB - Submersible Lights - Optronics
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17" x 1-3/8" x 1". Waterproof LED combination trailer tail light acts as a brake, tail, and turn signal when properly mounted. Durable polycarbonate housing and lens. Surface mount - hardware not included. 3-Wire design. Lowest Prices for the best trailer lights from Optronics. Optronics Streamline LED Trailer Tail Light - Submersible - 3 Function - 11 Diodes - Red Lens part number STL79RB can be ordered online at or call 1-800-496-5010 for expert service.
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  • Reviews (445)
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Optronics Trailer Lights - STL79RB

  • Tail Lights
  • Oval
  • LED Light
  • Red
  • 17L x 1-1/2W Inch
  • Surface Mount
  • Stop/Turn/Tail
  • Submersible Lights
  • Optronics

17" x 1-3/8" x 1". Waterproof LED combination trailer tail light acts as a brake, tail, and turn signal when properly mounted. Durable polycarbonate housing and lens. Surface mount - hardware not included. 3-Wire design.


  • Low-profile LED trailer light serves 3 functions:
    • Stop
    • Turn
    • Tail
  • Sonically sealed, polycarbonate housing and lens are waterproof
  • Durable surface-mount technolgy (SMT) construction of LED circuit board
    • Better withstands shock and vibration
    • Allows for improved heat distribution
  • 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
  • Red lens over white LEDs
  • Surface mount - hardware not included
  • 3-Wire design


  • Overall dimensions: 17" long x 1-3/8" wide x 1" deep
  • Distance between mounting holes (center on center): 16-1/8"
  • Diodes: 11
  • Power draw at 12.8V:
    • Stop/turn: 0.350 amps
    • Tail: 0.022 amps
  • Lifetime warranty on LEDs

Optronics STL79 Series Streamline Sealed LED Trailer Tail Light Diagram

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 circuit board is sealed, which means that water will not damage the diodes or circuit board.

STL79RB Optronics Streamline LED Combination Trailer Tail Light - Submersible - Stop, Tail, Turn - 11 Diodes - Red Lens

Alternate part number: STL-79RB

California residents: click here

Customer Reviews

Optronics Streamline LED Trailer Tail Light - Submersible - 3 Function - 11 Diodes - Red Lens - STL79RB

Average Customer Rating:  4.8 out of 5 stars   (445 Customer Reviews)

17" x 1-3/8" x 1". Waterproof LED combination trailer tail light acts as a brake, tail, and turn signal when properly mounted. Durable polycarbonate housing and lens. Surface mount - hardware not included. 3-Wire design.


Great purchase experience. 11-LED Optronics Trailer Light STL79RB was delivered as promised and fits perfectly. Recommend this item and will return for my future lighting needs.


The clear LED tailight strips that came with my trailer started filling with moisture and were only partially working. Most trailer part places only had the 15" lights. You were the only ones I found with the 17" lights and a diagram showing the mounting hole centers and dimensions. The product pictures were great for checking the wiring. Quick shipping and the tracking link was great. A few simple tools & some butt connectors and I was done. Finished the job with clear caulking around the lights.I like the red strip over the clear stock one and the lights are easy to see even in full sun.


Worked great, I used them on the sides of my headache rack.

There still working perfectly
Steve S - 05/31/2021


The LED taillights worked out great with my trailer rebuild. They will be protected at all times because I was able to have them tucked out of harms way. They are not low where backing up would endanger them and not protruding from the sides to be in the way either.

But they are still highly visible at all times from the side or rear. THANKS for a great product!

The tail lights were a great finishing touch to the rebuild of my utility trailer. The taillights are so visible and stay out of the way. They dont have those tender filaments in the old bulbs that a bouncing trailers play havoc with. Not to mention rusty bulb sockets that made the bulbs dimmer!
Jerry - 11/12/2018


Product delivery was good and item appeared to be in good order. However your online credit card payment system needs work on it is it would not except my credit card payment or a PayPal payment so therefore my order was delayed and I had to call to get the order completed.


These were to replace some on the back of my motorhome that I installed about 4 years ago. They corroded with Michigan’s winters and salted roads but looked so good I replaced them with fresh ones.


Looked at several lights on amazon. Flat on the back makes for a difficult connection. Found these on etrailer and worked great. Their is a good space behind the light to deal with the ground and wires. Excellent buy! Very happy with purchase. Shipping was fast and great follow up on purchase. Will buy again!


I like a lot of folks did my research, I have a specific requirement for this cargo carrier, I need it to hold a dock box made by lifetime. And this carrier works perfectly. It was very easy to assemble. And very sturdy. I enclosed a picture of the dock box installed. I had to do some modifications to the dock box, but it worked out beautifully. I highly recommend this cargo carrier for the price quality and value.


I installed this light as a third brake light at the top of my camper. LEDs, no maintenance, works great. A big improvement in safety. Order service was prompt and accurate. Good job.


We installed two lights on a ramp for the rear of our car. They were so simple to install and they are very bright. Great product!


I used this as a brake light and it has handled offroad abuse and has continued to work without any segments burning out. It was wired to provide the brightest output.


Great Transaction !!! Thank you.


From chatting with an expert who really help in selecting the right product to delivery was a super experience. No surprises, exact price, delivery within expectation. I will definitely make business with you again and recommend Etrailer!


Replaced the crappy original stick-out basic lights with these LED ones under the lip of the deck. Fit great, work great. Good product, as expected from etrailer.


Lights arrived in great time and condition . Installed them yesterday without problems. My only suggestion is to include some instructions for those that have no knowledge of wiring.

Working GREAT!
Jon - 08/17/2021


Product ok, but delivery time took 1.5 month...


Half the price of a local dealer


Some of the light units were not in any type of packaging at all. And the license plate holder light would only light two of the five LEDs in it.
I am returning the entire order because m, 1, bad packaging, 2, license light is defective, 3, the quality of all products is not up to speed with the RV 5th wheel coach I wanted to put them on.
It’s a 2019 35 foot unit and I want better quality equipment installed onto it.


Rebuilt my boat trailer, have had them underwater several times and working
Perfect. Great easy product!


ordered for use on trailer with rear ramp that when closed (verticle) stands approx. 6'. Lights on the trailer are low to ground approx. 1'- 18". My concern was visibility of trailer brakes. Your item was flat backed long and narrow ideal for mounting at top part of trailer ramp mentioned earlier. Much more visible approx 5' high and of course led lights, much brighter. Feel more secure towing with addition of your item. Easy to install, quality, and price reasonable.

Same opinion as right after installed, still pleased!
Bruce R - 03/22/2018


Lights up back of my trailer very well. The product performs as stated in brochure


Not real happy at this point. Spent most of the day filing down the back, ( center) of the light for mounting on a flat surface. Both rails on the back of the light created a bow when screwed onto a flat surface. If I would have just attached it to the flat surface, it would have put the circuit board in a bind and I didn't think that would be a good idea knowing the beating they would take if mounted them like that on the back of my flatbed trailer. With one end screwed down, the other end was approximately 1/8 of an inch raised above the mounting rail. If mounted like that, they would not have lasted 3 weeks before cracking the circuit board. as received, the small rails on the back did not provide a flat surface for mounting. But they did when I got done filing them. If anybody is going to screw an object 17" long onto a flat surface, ( unless it is made out of rubber) it better be flat also. On top of that, the wires could stand to be a bit longer.

lights working great. I could not have made a better decision on what and who in order to obtain my desired results.
dave g - 12/29/2017


I have not installed the lights yet but I can tell that the quality is excellent. It’s completely sealed and waterproof. The saltwater will not get in easy to destroy the lights.


Beautifully designed, looks like two light bar, very bright and effective. I recommend this product.


Installed without issue. Applied clear silicone sealant around boundary of lamp to seal trailer.

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