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Thinline LED Trailer Tail Light - Stop, Tail, Turn - Submersible - 15 Diodes - Red Lens

Thinline LED Trailer Tail Light - Stop, Tail, Turn - Submersible - 15 Diodes - Red Lens

Item # STL64RB
Our Price: $23.83
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Shipping Weight: 0.62 lbs
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20-1/2" Long x 1" tall. Waterproof trailer light serves 3 functions: brake, tail, turn. Low-profile Thinline light fits in tight spaces. Surface mount on 19-5/8" centers - hardware not included. 15 LEDs. Red lens. Lowest Prices for the best trailer lights from Optronics. Thinline LED Trailer Tail Light - Stop, Tail, Turn - Submersible - 15 Diodes - Red Lens part number STL64RB can be ordered online at or call 1-833-496-1390 for expert service.
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  • Reviews (744)
  • Q & A (0)
  • Photos
  • Why etrailer?

Optronics Trailer Lights - STL64RB

  • Tail Lights
  • Strip Light
  • LED Light
  • Red
  • 20L x 1W Inch
  • Surface Mount
  • Stop/Turn/Tail
  • Submersible Lights
  • Optronics

20-1/2" Long x 1" tall. Waterproof trailer light serves 3 functions: brake, tail, turn. Low-profile Thinline light fits in tight spaces. Surface mount on 19-5/8" centers - hardware not included. 15 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
  • Hardwire with separate ground wire
  • Mounts on surface of trailer - hardware not included
  • DOT compliant


  • Dimensions: 20-1/2" long x 1" tall x 3/4" deep
  • Mounting holes: 19-5/8" apart on center
  • Diodes: 15
  • Power draw at 12.8 volts:
    • Stop light: 0.2 amps
    • Tail light: 0.01 amps
  • Wire configuration:
    • White: ground
    • Black: tail light
    • Red: turn signal
  • 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.

STL64RB Optronics Thin Line Combination LED Boat Trailer Taillight - 15 Diodes - Red Lens

California residents: click here

Customer Satisfaction Score:

Customer Reviews

Thinline LED Trailer Tail Light - Stop, Tail, Turn - Submersible - 15 Diodes - Red Lens - STL64RB

Average Customer Rating:  4.8 out of 5 stars   (744 Customer Reviews)

20-1/2" Long x 1" tall. Waterproof trailer light serves 3 functions: brake, tail, turn. Low-profile Thinline light fits in tight spaces. Surface mount on 19-5/8" centers - hardware not included. 15 LEDs. Red lens.


I’ve been using these lights for about a year and they are still working like new. They gave my old converted pop-up to utility trailer a very cool and low profile look.

These LEDs are still working great. Love the low profile fit. I get many compliments on them.
Paul - 05/22/2022


I have a 2010 international trailer. I was unable to find exact match parts so I went to etrailer to find comparable parts. These 3 way tail lights were 5 inches longer, as posted in the description, than the ones that were on previously. I just drilled a new hole each for the wires and one screw and used one of the previous screw holes. These lights are bright and I was happy with the flush fit on the trailer.


they were easy to install, works great on my little trailer. i bought 4 of them so that the trailer is easily seen no matter the conditions.


A little warped when received but was still able to mount them as desired
Very bright


Great Service! Replaced my bad LED Tail Lights on my box trailer. I decided to order these 20" LED and replaced the old 16" that my trailer came with. Fast shipping and great service! Thank You!


I am thrilled to receive my product. It took me a month to find this one of such dimensions to fit into my custom Cadillac. Opening up the box and having it in my hands I am happy with the quality, color of materials and luminance.
Picture of passenger side; additional brake light. Driver side to follow


Bought 2, one defective. It turned on but not bright . Contacted Etrailer for replacement. Excellent customer service, they sent replacement within 5 days. Looks nice 5 inch longer than the original


To nice addition with brake lights works well

Still working
William - 01/05/2022


Product was as I was hoping for. Fast delivery and product was just as I expected. Install was an easy install and gives the rear of the trailer the added lighting that I wanted for other vehicles to be able to see my intentions when changing lanes and stopping. Am very satisfied with the purchase and if I need more lighting Etrailer is were I will purchase. All the lighting will be changed at some point including LED side lighting. Prices at Etrailer are some of the cheapest that I have found for quality lighting.

The lights are still operating as good as the day I installed them. They definitely brighten up the rear of the car hauler that I installed them on.
Cary - 11/23/2020


They work fantastic... I only had bottom lights before and when my friend was following me he couldn't see my lights well... So I added these brake lights to the sides and visibility is 100% better... Thank you...


Iam looking forward to installing these lights on my fifth wheel hauler soon.


Sold the trailer that had these lights .


Nice and bright, pigtail matched original. Six more leds than original. Had to drill new mounting holes. Looks and performs better than new.
Would definitely recommend!

by: 05/07/2021

Took a while to get them through no fault of etrailer as they were down to on light in stock and everything seems to take forever to get back in stock. Install was great mounting to the new posts for better visibility and they look awesome


I really like this light.

I wanted
a very very obvious tail light setup on my old trailer.

I mounted these about halfway up the door height. Now I have a modern looking tail light setup, that is insanely bright, mounted above traffic, and there's just no way to not see them.

Looks very good, and actually has an OEM feel (it does not look cobbled together on my old trailer).

Super easy install.

Very happy with this product.


Put this on the rear of our Motorhome. easy to install and makes the brake lights more visible.

easy to install on our motorhome and makes the break lights more visable.
Bruce - 09/23/2020


I bought this light for the back of my Polaris RZR RS1 as a upper run / brake light in addition to the factory one. P I installed it and it works great! I have bought in the past from E-trailer for trailer lights and electric brakes. Great products and delivery. I really like the videos of the products, seeing is believing!!


Great way to improve your trailer's visibility for vehicles approaching from the rear. The dimensions of these lights make them a great choice for mounting any flat surface. The number of LEDs are perfect for a light this size. The foam backing provides shock dampening which is important on trailers that are always banging around.


Hi Ashley,
Got two lights to put below
the tailgate on my PU Truck, there still working
very good. I sent you folks a picture.

Thank You

Every thing working fine
Wendell J - 04/22/2020


This is the second set of these lights that I have purchased. They are very durable and easy to install/wire up. I was tired of ripping my traditional side mount lights off of my lowboy trailer (it happens lol), so I bought this set to install under the ramp channels on the back so they have no chance of getting caught on anything. Look good, work good, and are plenty bright.


Really nice bar light. Wish they could split the LEDs in half so to make use of the blinker function as I simply use it in the middle of my utility trailer to replace an old tail lamp, but it still function well as a tail light. Super bright.


Good addition for extra visibility..Easy Install


D.O.T. approved, fit and finish looks good, easy install. 3 wires for turn, brake and running lights . This is just what I needed to put on the rear of my 40' 5th wheel .I Just didn't feel comfortable with the 2 small L.E.D. tail lights that the camper came with. These worked out really well.


High quality product! It will be used to supplement the lighting on our new toyhauler.


Excellent product bright LEDs very visible. Installed on an enclosed car trailer to enhance the lighting for driving in congested areas. They work great. Thanks

Show More Reviews

See what our Experts say about this Optronics Trailer Lights

  • Can I Install the Thinline LED Trailer Tail Light Vertically Where It Will Be Submerged?
    The Thinline LED Trailer Tail Light # STL64RB can be mounted vertically without issue and it will not retain any water since the light is sealed to keep water out. This is a fully submersible light that was designed to be used on boat trailers, as well as trailers that are not submersed.
    view full answer...
  • Wire Colors for Optronics Thinline LED Trailer Tail Light # STL64RB
    The video review for the Optronics Thinline LED Trailer Tail Light # STL64RB that you mentioned is correct. The white wire is for ground, the black wire is for tail lights, and the red wire is for turn/brake signals.
    view full answer...
  • Is Thinline LED Trailer Tail Light # STL64RB Sold Individually
    The Thinline LED Trailer Tail Light # STL64RB that you referenced is sold individually. If you needed two you'd have to order a quantity of two. The wiring is 16 gauge.
    view full answer...
  • Is There Difference Between ThinLine LED Clear and Red Lens for Tail Light Strip STL64RB
    Picking between the ThinLine LED trailer taillight part # STL64RCB which is clear and the # STL64RB which is red really comes down to which you like the look of better. If you like the look of the clear lens then go with it, I would probably go with the red lens as I am sure most of your Grand Design lenses are currently red.
    view full answer...
  • Parts Needed to Install 3rd Brake Light on Enclosed Trailer
    The Optronics light best suited to your application as a 3rd brake light is their part # STL80RB which is a single-function LED light. The light # STL64RB that you referenced is a multi-function light (Stop/Turn/Tail) which you do not need. It is necessary that this additional light operate only with brake pedal signals and not with turn signals. You can meet this DOT requirement by installing a 2-to-3 converter which will separate the brake signals from the turn signals. Trailer wiring...
    view full answer...
    Image 1 for
  • Optronics Thinline LED to Replace a TecNiq T16
    I have a solution for you but we do not carry the TecNiq T16. I recommend the Optronics Thinline LED Trailer Tail Light - Stop, Tail, Turn - Submersible - 15 Diodes - Red Lens item # STL64RB. The sonically sealed, waterproof housing and lens unit is submersible. This light has identical dimensions at 20-1/2" long x 1" tall. It has the same three functions with brake, tail, and turn. The Optrionics is a better light with 15 LEDs over the TecNiq T16 13.
    view full answer...
  • Adding Additional Taillight to Grand Design 5TH Wheel For Better Braking Visibility During the Day
    Since you are keeping your current taillights on your Grand Design 303RLS I recommend the ThinLine LED Trailer Tail Light # STL64RCB over the # STL64RB as they have a clear lens. When you use these during the day there will be a more pronounced difference with the clear lens. By keeping your taillights you maintain the red reflectors that are required. The Black Mounting Bezel # A64BB will also fit the clear lens as they are both the same dimensions.
    view full answer...
  • Is the Thinline LED Trailer Tail Light Available As a Clearance Light
    The Thinline LED Trailer Tail Light part # STL64RB has three functions; stop, turn, and tail. If you are looking for a similar style of light with the clearance function capability then you can use the UltraThin ID Light Bar part # MCL70RB. If this is not what you are looking for please just let me know and I would be glad to see if we have other options for you.
    view full answer...
  • Options for Adding a 3rd Brake Light to a Truck Bed Shell
    The Optronics GloLight Thinline LED Trailer Tail Light # STL179RB is generally mounted completely level, but a slight upward cant will not affect it very much. That being said, if you have a little more space to mount a longer light, I may have a better option. The Optronics Thinline LED Trailer Tail Light # STL64RB will be 20 1/2 inches long, as opposed to the 17 inch long # STL179RB. The # STL64RB also has the optional add on mounting bezel # A64BB. This can be sanded down at an angle...
    view full answer...
  • Four-Wire Option w/ Backup Light For Thinline LED Trailer Tail Light
    We do indeed have a four-wire version of the Thinline LED Trailer Tail Light # STL64RB. All four-wire trailer lights are for stop, turn, tail, and backup lights, so that portion of the light is obviously going to have a clear lens (as do all four-wire lights due to having the backup function). The correct four-wire light is the following: - Fusion LED Combination Tail Light # STL264RB The # STL264RB has the exact same measurements as the # STL64RB, at 20-1/2" long x 1" tall x 3/4" deep,...
    view full answer...
  • Adding 3rd Brake Light to Rear of 2016 Honda Pilot
    You can use the Thinline LED Trailer Tail Light # STL64RB as a third tail light on your 2016 Honda Pilot, though to do this you will not want to use the converter you mentioned. Instead, you will want to use the much simpler Pacer Performance 3rd Brake Light Logic Module # PP20-702 run in between the 4-way on your Pilot and the Thinline tail light. The Module will run between your Pilot's 4-way and the LED tail light. You will then ground the white wire of the tail light and run the black...
    view full answer...
  • How To Wire the Thinline LED Trailer Tail Light STL64RB As a Third Brake Light
    The Thinline LED Trailer Tail Light part # STL64RB is a three function light with those functions being stop, turn, and running. It has a three wire design with the white wire being ground, the black wire for the tail lights, and the red wire for the stop/turn signals. The stop and turn signals are combined on US trailers which this light is designed to be used on which is why the circuits are on the same wire. I know a lot of customers use this light for a third brake light so if that...
    view full answer...
  • Wire Gauge for Install of Optronics Thinline Trailer Taillight # STL64RB
    The wiring of the Thinline trailer light # STL64RB is a 16 gauge so sticking with that would be a good idea I'd say. We offer 16 gauge wire by the foot with part # 16-1-1 as well.
    view full answer...
  • Can Optronics Thinline LED Trailer Tail Light be Used as a 3rd Brake Light
    You definitely can use the Optronics Thinline LED Trailer Tail Light # STL64RB as a 3rd brake light! You'll need to cap off the black wire, ground the white wire, and then install the Pacer Performance 3rd Brake Light Logic Module # PP20-702 in-line with the red wire to isolate the brake signal from the turn signal. Attached is photo of the installation instructions for the module that you can reference. I also recommend using either the Black # A64BB or Chrome # A64CRB mounting bezel...
    view full answer...
    Image 1 for
  • Replacement LED Strip Light with Tail Light, Brake and Turn Signal Function for 2015 Cedar Creek 5W
    I may have a solution for you, but most of our larger ceiling lights have switches built in. However, you can use a puck light like the LED RV Interior Light # 328-K-1050Q9, which does not have a switch and mounts on the ceiling surface. These lights are 4-1/2" in diameter and come with 9 bright LED diodes to provide a small and easy to install light solution for your Cedar Creek 5th Wheel. Another option would be the Opti-Brite Low Profile LED RV Dome Light - 390 Lumens - Round - Clear...
    view full answer...

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Info for this part was:

Employee Jameson C
Expert Research:
Jameson C
Employee Adam R
Expert Research:
Adam R
Employee Cole B
Installed by:
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Employee Wilson B
Updated by:
Wilson B
Employee Brian T
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