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Thinline LED Trailer Tail Light - Stop, Tail, Turn - Submersible - 9 Diodes - Red Lens

Thinline LED Trailer Tail Light - Stop, Tail, Turn - Submersible - 9 Diodes - Red Lens

Item # STL59RB
Our Price: $13.94
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Trailer Lights
Shipping Weight: 0.24 lbs
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Thinline LED Trailer Tail Light - Stop, Tail, Turn - Submersible - 9 Diodes - Red Lens Submersible Lights STL59RB
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12-5/8" Long x 1" tall. Waterproof trailer light serves 3 functions: brake, tail, turn. Low-profile Thinline light fits in tight spaces. Surface mount on 11-3/4" centers - hardware not included. 3-Wire pigtail. 9 LEDs. Red lens. Great Prices for the best trailer lights from Optronics. Thinline LED Trailer Tail Light - Stop, Tail, Turn - Submersible - 9 Diodes - Red Lens part number STL59RB can be ordered online at or call 1-800-940-8924 for expert service.
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Optronics Trailer Lights - STL59RB

  • Tail Lights
  • Strip Light
  • LED Light
  • Red
  • 12-1/2L x 1W Inch
  • Surface Mount
  • Stop/Turn/Tail
  • Submersible Lights
  • Optronics

12-5/8" Long x 1" tall. Waterproof trailer light serves 3 functions: brake, tail, turn. Low-profile Thinline light fits in tight spaces. Surface mount on 11-3/4" centers - hardware not included. 3-Wire pigtail. 9 LEDs. Red lens.


  • Trailer tail light serves 3 functions
    • Stop light
    • Tail light
    • Turn signal light
  • Sonically sealed, waterproof housing and lens unit is submersible
  • Thinline Series has a low profile so that light can fit in tight spaces
  • Durable surface-mount technology (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
  • Polycarbonate lens and housing
  • Red lens
  • 3-Wire pigtail - 19 AWG
    • White wire for ground
    • Black wire for tail light
    • Red wire for turn signal
  • Mounts on surface of trailer - hardware not included
  • DOT compliant


  • Dimensions: 12-5/8" long x 1" tall x 1/2" deep
  • Mounting holes: 11-3/4" apart on center
  • Diodes: 9
  • Power draw at 12.8 volts:
    • Stop light: 0.2 amps
    • Tail light: 0.01 amps
  • Lifetime warranty on LEDs

Optronics 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.

STL59RB Optronics Thin Line Combination LED Boat Trailer Taillight - 9 Diodes - Red Lens

California residents: click here

Customer Satisfaction Score:

Customer Reviews

Thinline LED Trailer Tail Light - Stop, Tail, Turn - Submersible - 9 Diodes - Red Lens - STL59RB

Average Customer Rating:  4.8 out of 5 stars   (882 Customer Reviews)

12-5/8" Long x 1" tall. Waterproof trailer light serves 3 functions: brake, tail, turn. Low-profile Thinline light fits in tight spaces. Surface mount on 11-3/4" centers - hardware not included. 3-Wire pigtail. 9 LEDs. Red lens.


The day pic's were from 6:30 p.m. 06/07/19. Notice you can't see the stock taillights from 10 ft. away. Hence my purchase of these LED lights for the angle iron uprights. The night pic's are 2 ft. from my garage door at 9:30 p.m., 06 07/19, and this is what drivers behind me will see. These LED's are slim, well made, water proof, and attach like a breeze. I LOVE THESE LIGHTS!!!!!! As I told Carol, the pigtail wires should be 11/2 to 2ft. instead of 8". My only downside to these lights. I Have 3 trailers and from now on is my go to site!! Thanks a million, great product.

Fantastic! Same as above.
Ronald R - 06/08/2020


After arriving pit bull ate package. etrailer replacement was at no cost. Very happy with customer service, very helpful. Great product, reasonable price. Used as rear fog lights on my SUV and car.Thanks etrailer great job.


I wanted additional brake light visibility higher up on rear of my camper. The STD lights were low and partly obscured if I was hauling bikes on their rack. There was no good way to run wiring inside and I didn't want holes as possible leak points. So I mounted these thin, bright LED lights high along outer edges, connected wiring to existing brake lights, encasing wiring in heat shrink tubing and siliconed all in place. Looks good, works great!


I was looking for lights to add to a receiver hitch cargo carrier for nighttime visibility. These were perfect for size and function. The housings were sturdy, the wiring was sealed and they worked on the first try, as tail lights, turn signal and brake lights. Would definitely recommend these!

Still working perfectly 1 year later!!
Jay C - 09/02/2020


Love these high quality LED lights! Easy to install and one year later they are still working well.


Lights were easy to install on rear steel plate of trailer. 3 holes drilled per light (2 for mounting, 1 for wire access). Lights are bright and very visible in daylight conditions. Lights are protected by design of rear steel plates. Very satisfied.


Installs easy. Wire gauge is sufficient, and wires are sealed nicely where they join the assembly. These were installed for a saltwater application. After two months and several dunks in the ocean, no evidence of water intrusion.

After more than a year of regular saltwater use, all LEDs are still working properly with no evidence of water intrusion or corrosion.
Frank - 02/19/2023


The lights are exactly what I needed to make a light bar for my hitch mounted bike rack. When our bikes were on the rack it reduced the visibility of the cars's stop lights, brake lights and turn signals. The bar rotates so the lights are visible in the rack's up or down position.


I purchased this light to replace a 3rd brake light on my pick-up topper.the product information and dimensions were vital to my installation and ETRAILER were spot on.The light is bright and looks great, excellent company


Easy to install. temporally connected to wires to verify operation. White wire is ground. Used a step drill to make a hole for the wires.


Great light, very bright. Only thing is wires aren't labeled to the function they control. Only complaint is length, I wish the light was 3-4 inches shorter.

The wiring functions for each wire on this light are: White wire for ground, Black wire for tail light, and Red wire for turn signal.
-- Etrailer Expert Victoria B - 02/14/2020
Excellent, not one issue
Ben C - 02/14/2021


The light itself is an LED light. But it has stop tail turn functions. Which if using it as a third brake light you have to ground it multiple times so that the LEDs do not illuminate when you do not want them to. I used this as a third brake light in my 51 Chevy


These tail lights work great on my custom built wheelchair trailer. They are bright, easy to mount and function as needed. They've been on the trailer for a year with regular use and no problems to date.


Great bang for the buck. prompt delivery, quality piece.


these lights are absolutely blinding. They work great! The pictures are running lights only, NOT Brake Lights!


After adding larger tire carrier on the JK, this was a perfect solution for relocating the brake light. Added a quick disconnect on the inside when the roof is off. Quick and easy install.


Haven't hooked it up yet but tried it out on a 12 volt battery and it looks good, works fine. Wire colors are a little confusing but maybe that's the proper convention. White goes to ground, red to bright stoplight positive, black to running light positive. No instructions came but easy to figure out. Shipping time was excessive but maybe covid accounts for that.

Works fine
Michael - 12/23/2021


Exact replacement as my factor one that quit working.


These are awesome. Work as advertised. Was only going to do one on each side. But after I saw how bright they are I decided on 2 per side.


I ordered 2 of these lights to install on my bike rack. They work great, nice and bright and easy to wire.


I have a home made utility trailer with round tail lights that are big enough that if the front of the trailer is lifted to high the back hits the ground and the tail lights break. these are thin enough that they will not contact the ground and therefore not break. They look good and arrived as advertised. The screw hole on the ends are all plastic. It would have been nice if a metal collar or end was there to keep the plastic from cracking if the screws are over thightened. I just got them and haven't had a chance to see if they work ok or not.

They are working great Im impressed with how visible they are. Highly recommend them.
Terry L - 07/23/2021


The lights were awesome. We added them to the back of a 16' flatbed trailer just under the back lip. The lights were in addition to the regular taillights. The idea was if someone was to close to see the side lights , they could see these from the back. They were also easy to install, we just tapped into the regular taillights. We are thinking about adding these to our dump trailer as well.

Still great 1 year later. Awesome buy.
Louis O - 01/03/2021



I installed this above
my stock Jayco replacement as I do not trust those lights as they are not submersible.

This one is brighter and smaller.

Awesome and simple produce. The epoxy or plastic seal on the back looks great.


Exactly what i needed for my trailer. Lights are very bright. Quality product at a reasonable price. Added these on my trailer so I would have running lights.

still bright can be
Daniel - 10/24/2019


Thinline LED Trailer Tail Light - Stop, Tail, Turn - Submersible - 9 Diodes - Red Lens - STL59RB. The LED lights are Very Bright, and were easy to install. I'm very satisfied and will be buying from etrailer again in the future. AAA+++

Show More Reviews

See what our Experts say about this Optronics Trailer Lights

  • How to Install 3-Wire LED Type Light to 4-Pole Wiring
    A flat 4-pole trailer harness carries three lighting circuits, brake lights, running lights and turn signals. The green wire carries right side turn and brake signals; the yellow wire carries left side turn and brake lights; and the brown wire on the 4-pole carries running lights for both sides of the trailer. You can refer to the linked article for more on trailer wiring. How you connect your LED light depends on which light functions it supports and what you want it to do. If for example...
    view full answer...
  • Are the Optronics Thinline LED Trailer Lights Sold in a Pair
    The Optronics Thinline LED Trailer Tail Light, # STL59RB, is sold individually.
    view full answer...
  • How to Determine Trailer Lighting Requirements for Car Hauler Trailer
    Lighting requirements for trailers over 80-inches wide do vary a bit depending on the trailer's gross weight. The linked article details the National Highway and Traffic Safety Administration (NHTSA) guidelines for trailer lighting based on trailer size and weight. The standard calls for 2 stop/brake lights only, but you certainly could add a third stop/turn/tail light such as # STL59RB from Optronics. However, adding this light does not reduce the other requirements. There are also conspicuity...
    view full answer...
  • Can I use STL59RB As Separate Turn Signal Lights
    The Thinline LED Trailer Tail Light part # STL59RB is not designed to illuminate as separate turn signals. You would need two lights for that to work.
    view full answer...
  • Installing New 3-Wire Light Assemblies on Trailer
    It sounds like the previous lights on your trailer used the mounting hardware for the ground. Your new LED light assemblies have a separate ground wire, which should be attached to a clean, bare metal surface. You will want to make sure that there is no debris or corrosion on the surface you attach it to, as this may lead to the issues you are having with the running lights. In order to install your new assemblies, the other two wires (which should be black and red) will attach to the...
    view full answer...
  • Can the Thinline LED Trailer Tail Light Be Mounted On a Curved Surface
    The Thinline LED Trailer Tail Light part # STL59RB is constructed of plastic therefore if you need to mount this on a curved surface you will need to build up the sides where the mounting holes are located as there will not be much flex if at all without breaking.
    view full answer...
  • How to Install New Trailer Tail Light with 3 Wires
    Most likely, the red wire on your new tail light is for the turn signal, the black wire is for the tail light and the white wire is for ground. I do recommend testing the wires on your trailer for function, but typically the yellow wire will be for the left turn signal and the brown wire will be for the tail lights. If this is correct, the red wire from the light will connect to the yellow wire on the trailer and the black wire will connect to the trailer's brown wire. The white ground...
    view full answer...
  • LED Lights for TAG Little Guy Trailer
    Though we do not have the exact lights you are looking for, we do have something similar with the Optronics Trailer Light # STL59RB which is 12-5/8" long x 1" tall x 1/2" deep and serves as a stop light, tail light and turn signal light. I've added a link to a video review of this light for you to take a look at.
    view full answer...
  • Center Light on Trailer Causes All Trailer Lights to Blink When Both Turn Signals are Wired to it
    It sounds like everything is working correctly except that your top LED light is only flashing with the left turn signal and not the right turn signal. If your center light is wired like the Thinline LED Trailer Tail Light # STL59RB with the White wire for Ground, the Black wire for the Tail/Running Lights, and the Red wire for a Turn Signal, it will only flash with whichever turn signal you have it wired to. Attaching both the Right Turn/Stop (typically Green wire) and Left Turn/Stop...
    view full answer...
  • Troubleshooting Running Light Circuit of Optronics LED Trailer Lights STL59RB Not Functioning
    The black wire of the Thinline LED Trailer Tail Light # STL59RB that you referenced needs to have the running light circuit ran to it. This will operate the lower illumination of the light. I'd make sure that the brown wire on each side of your trailer is connected to the black wire of the lights and the stop/turn signal is attached to the red wire as I believe that's your issue.
    view full answer...
  • Can Thinline LED Trailer Tail Light # STL59R Be Used as Stop/Turn Light on Trailer
    You definitely could use the Thinline LED Trailer Tail Light # STL59RB as a standard trailer stop/turn/running light on the sides of your trailer as all of those functions are supported on this light. If you check out the picture I attached you can see a customer of ours who had a similar idea and used them on both sides of the trailer.
    view full answer...
    Image 1 for
  • How Many Lights Come with STL59RB
    The Thinline LED Trailer Tail Light - Stop, Tail, Turn - Submersible - 9 Diodes - Red Lens # STL59RB is a single light bar. If you needed both driver and passenger side, you would want to order 2 of these lights.
    view full answer...
  • Is Optronics STL59RB Thinline LED Trailer Tail Light Sold Individually or in Pairs
    The Optronics # STL59RB Thinline LED Trailer Tail Light is sold in a quantity of 1. For a pair, you'd want to order 2 lamps. I've linked to a product description/demonstration video for the # STL59RB lamp.
    view full answer...
  • Replacement 12" x 2" Rear LED Light Strip On Motorhome
    The Thinline LED Trailer Tail Light part # STL59RB is the best fit match we have for the 12" x 2" rear light strips on the RV. This strip measures 12-5/8" long x 1" wide. The screw holes will not line up but you can easily drill new ones and fill in the old with silicone. This light works as stop, turn, and clearance. I have attached a full list of trailer light options below.
    view full answer...
  • Mounting Hole Size of Thinline LED Trailer Tail Light # STL59RB
    The hole size of the Thinline LED Trailer Tail Light # STL59RB that you referenced is 3/16 inch so a bolt that diameter would work well.
    view full answer...
  • Troubleshooting Left and Right Turn Trailer Light Circuit that Activates Together
    Most likely you have the stop/turn and running lights backwards on your trailer light that looks like the part # STL59RB. You can easily test that by seeing if the running light circuit makes the light assembly brighter than the brake circuit. Otherwise you would have a short between the left and right stop/turn circuits which is why they both are activating at same time. You'd need to go over the circuits looking for any shorts between the two wires like cut/exposed wire and fix as needed.
    view full answer...
  • How Does Red Wire of Optronics Clearance Light STL59RB Run to Yellow and Green Wires
    The red wire of the Optronics trailer taillight part # STL59RB gets ran to the stop/turn circuit of either side of the trailer. The left and right blinkers have to be on separate circuits so that they don't activate at the same time. The green wire on the trailer is typically the left side stop/tail and the yellow wire gets ran to the left turn/brake circuit.
    view full answer...
  • Relative Light Output Level for Optronics Thinline LED Lights STL59RCB and STL59RB
    Both the Optronics lights you referenced, parts # STL59RCB and # STL59RB, are thin-line 9-diode LED light strips that directly surface mount without need for a mounting bracket or bezel. Each light has two mounting holes built in to the housing; these are spaced apart at the same 11-3/4-inch center-to-center distance on the sealed, waterproof polycarbonate housings. I checked with my technical contact at Optronics about the relative lumen brightness of these two similar products. I was...
    view full answer...
  • Is a Converter Needed to Add an LED Light to the Back of a Bike Rack
    Trailer lights such as # STL59RB are designed to work with what is called a combined system where the brake lights and turn signals are on the same circuit. This is what the 4-Way flat connector has on your vehicle. If you used a converter such as # 118158 it would separate out the brake lights from the turn signals. If you are using a light that is designed for separate brake and turn signal functions then you would need the converter. But if you are using a trailer light such as # STL59RB...
    view full answer...
  • Is There A Strip Light Available With an Amber Lens For Trailer Lights?
    The Thinline LED Trailer Tail Light is only available with a Clear Lens using Red LED's # STL59RCB or a Red Lens # STL59RB. Optronics does not manufacturer a strip light with amber LED's or a amber lens. The Optronics LED Trailer Turn Signal # STL78AB is going to be the closest light to this with an Amber lens.
    view full answer...
  • Comparing The STL59RB, STL69RRXB, and STL79RB For 80 Inch Wide Trailer
    I'll compare some of the most different aspects of these 3 lights you referred to: The Thinline LED Trailer Tail Light - Stop, Tail, Turn # STL59RB has a clear lens with red LEDs. It is submergible and measures 12-5/8 long x 1 tall x 1/2 inch deep. The Thin Line, Over 80" LED Stop/Turn/Tail Light, 3-Function # STL69RRXB has a red lens with reflector. This has 11 white LEDs. The Streamline LED Trailer Stop, Turn and Tail Light # STL79RB has a red lens with red LEDs. It has 3 middle...
    view full answer...
  • LED Strip Tail Lights For a 2017 Doolittle Enclosed Trailer
    It sounds like you are looking for a strip light like the Thinline LED Trailer Tail Light # STL59RB which has a red lens or the Clear Lens # STL59RCB. Both these strips have 9 LED diodes and are 12-5/8" long with mounting holes 11-3/4" on center. If you need a different length for your 2017 Doolittle enclosed trailer please let me know and I can help you find the correct length. If you are looking for a light more like you would see under a truck tail gate to put below the door we do...
    view full answer...
  • Do All Three Wires Have to Be Used with the Optronics Clearance Lights STL69RRXB and STL69RRXB
    The two wires of the # STL69RRXB and # STL69RRXB which carry power for the light control two different illuminations. If you only needed one of them you could easily just not use the one not needed. The red wire controls the brighter illumination and the black wire the dimmer one. Most likely you'd want to use the red wire and then ground the white.
    view full answer...
  • How Many Lights Come In # STL69RRXB
    The Thinline LED Trailer Tail Light w/ Reflector - Stop, Tail, Turn - Submersible - 11 Diodes - Red Lens # STL69RRXB and The Thinline LED Trailer Tail Light - Stop, Tail, Turn - Submersible - 9 Diodes - Red Lens # STL59RB come in quantity 1. I attached a review video link below.
    view full answer...

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Info for this part was:

Employee Mike L
Expert Research:
Mike L
Employee Michael H
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Michael H
Employee Jameson C
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Jameson C
Employee Adam R
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Adam R
Employee Cole B
Installed by:
Cole B
Employee Amy B
Written by:
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Employee Wilson B
Updated by:
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Employee Brian T
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