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Miro-Flex LED Combination Trailer Tail Light - 8 Function - Submersible - 18 Diodes - Driver Side

Miro-Flex LED Combination Trailer Tail Light - 8 Function - Submersible - 18 Diodes - Driver Side

Item # STL27RB
Our Price: $29.14
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8-1/16" x 2-15/16". Waterproof light acts as brake, tail, turn, side marker, side reflex reflector, rear clearance, rear reflex reflector, and license plate for trailers wider than 80". Surface mount. 3-Wire pigtail. PC Rated. Great Prices for the best trailer lights from Optronics. Miro-Flex LED Combination Trailer Tail Light - 8 Function - Submersible - 18 Diodes - Driver Side part number STL27RB can be ordered online at or call 1-800-940-8924 for expert service.
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Optronics Trailer Lights - STL27RB

  • Tail Lights
  • Rectangle
  • LED Light
  • Red
  • 8L x 3W Inch
  • Surface Mount
  • Stop/Turn/Tail
  • Side Marker
  • Rear Clearance
  • Side Reflector
  • Rear Reflector
  • License Plate
  • Submersible Lights
  • Optronics

8-1/16" x 2-15/16". Waterproof light acts as brake, tail, turn, side marker, side reflex reflector, rear clearance, rear reflex reflector, and license plate for trailers wider than 80". Surface mount. 3-Wire pigtail. PC Rated.


  • Low-profile trailer tail light serves 8 functions
    • Stop light, tail light, turn signal light, side marker light, side reflex reflector, rear clearance light, rear reflex reflector, and license plate illuminator
  • Miro-Flex faceted reflector design provides increased light output with a contemporary appearance
  • Sealed, waterproof construction is submersible
    • Light is designed specifically for boat trailers
  • LEDs make great replacements for incandescent lights
    • Last 50 times longer
    • More efficient - provide better light with less power output
    • No bulbs to replace - no brittle filaments
  • Durable plastic housing
  • Red lens over white LEDs
  • Mounts on surface of trailer - hardware included
  • 3-Wire pigtail
    • White wire for ground
    • Brown wire for tail
    • Green wire for stop/turn signal
  • DOT compliant
    • Meets FMVSS 108 and CMVSS 108 requirements for automotive lighting
  • Designed for use on trailers over 80" wide when properly mounted
  • PC rated


  • Configuration: driver's side (left-hand side)
    • Passenger's-side light (STL26RB) sold separately
  • Dimensions: 8-1/16" long x 2-7/8" tall x 2-11/16" deep
  • Diodes: 18
  • Power draw at 12.8 volts:
    • Stop/turn signal light: 0.167 amps
    • Marker light: 0.054 amps
  • Quantity: 1
  • Lifetime warranty on LEDs

Optronics STL27 Series Micro Flex Combination 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.

Combination Lights for Trailers Over 80" Wide

Flatbed trailer over 80" wide with combination tail lights

If a trailer is 80" or wider at its widest point, then it requires rear clearance lights in addition to basic trailer lights. These clearance lights indicate the width of the trailer when it is viewed from the back.

To meet these requirements on a flatbed utility trailer where the bed extends past the wheels, you can install combination trailer lights that include the rear clearance function. For proper mounting, the lights must be installed at the widest points on the rear of the trailer - one on each corner.

PC-Rated Lights

Diagram of light spread for PC rated light

A PC-rated light produces a 90-degree angle of light to either side of its centerline for a total of 180 degrees of coverage. This beam pattern can be clearly seen when you are standing directly in front of the light, as well as when you are standing on either side of the light. When properly installed, this type of light can function as both a front clearance light and a side marker light or as a rear clearance light and side marker light.

STL27RB Optronics Miro-Flex Combination LED Taillight for Marine Trailers More Than 80" Wide - Left Side - Red Lens

Alternate part number: STL-27RB

California residents: click here

Video of Miro-Flex LED Combination Trailer Tail Light - 8 Function - Submersible - 18 Diodes - Driver Side

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 - STL27RB Review

Today we're going to be taking a look at part number STL27RB. This is the Optronics microflex waterproof rectangular trailer light for the left hand side of your trailer. This light is going to serve 8 functions for trailers more than 80 inches wide, such as your stop, turn, tail, rear clearance, rear reflex, side marker, side reflex, and license plate illuminator. You've got the nice white lights down here on the base for a license plate. LED's are going to make great replacements for incandescent lights. You don't have to worry about replacing bulbs.

You don't have to worry about brittle filaments. They last much longer, they burn brighter, and they're much more efficient. This unit is going to feature a waterproof and corrosion resistant design. It's going to contain 18 LED's. It's a universal mount on the left hand side of your trailer. You can see the mounting slots back here.

It does come with the mounting hardware. They slide into those slots. This light actually has a nice little catch right there. It's going to offer a really nice secure hold when mounted. If we take a measurement between our mount holes, center on center, it looks like they're all going to be separated, all 3 of them, on 2 inch centers. This is Department of Transportation approved.

Optronics is going to put a lifetime warranty on the LED's. Microflex technology is going to increase your output while using 90% less energy than incandescent bulbs. It's going to have a really nice contemporary appearance while it maintains a traditional footprint of a rectangular trailer light. The LED light is going to draw 0.167 and 0.107 amps at 12.8 volts. Those 2 amp ratings are different because of the different functions of the light. Mounting hardware included.

You have got the exposed wire here on the back side. White is going to be for our ground. Yellow is going to be for our stop and turn signals. Brown is going to be for our running lights or our power light, or just our power wire. Let's go ahead and take a look at the overall dimensions of the light. Starting with the overall length, that looks to measure about 8 1/16 inches long. Measuring this direction, that's going to give us a measurement of about 3 inches wide. The depth, measuring from the front of the light to the back of the light, it's going to be about 2 11/16 inches. We're going to go and hook this up to our external power source. That way you can see what it looks like with power running to it. This is going to be the running light function. It's got the side marker over here. You're going to have the license plate illuminator's on the bottom. You're going to have your LED's for nice consistent running lights. When we apply our turn signal, you can see how that center section is going to illuminate. It's also going to function as our brake light. Very nice quick response time. A lot of light output. Multi-diode design so it's going to send out a nice strong, consistent LED signal. That's going to do it for our review of part number STL27RB. This is the Optronics microflex waterproof rectangular trailer light for the left hand side of your trailer. .

Customer Satisfaction Score:

Customer Reviews

Miro-Flex LED Combination Trailer Tail Light - 8 Function - Submersible - 18 Diodes - Driver Side - STL27RB

Average Customer Rating:  4.8 out of 5 stars   (1532 Customer Reviews)

8-1/16" x 2-15/16". Waterproof light acts as brake, tail, turn, side marker, side reflex reflector, rear clearance, rear reflex reflector, and license plate for trailers wider than 80". Surface mount. 3-Wire pigtail. PC Rated.


No complaints.


Great trailer light! Well built, fits the trailer like a glove. No issues after a year of putting it in and out of the water on my boat trailer. Bright too.

Another year without issues, great product, wouldnt hesitate to buy again. Etrailer is an excellent seller.
Ralph - 01/13/2022


Have not installed the unit yet. This is my second purchase from etrailer. The customer service is outstanding!! This order was almost identical to my first order and etrailers contacted me to assure that the order was not a mistaken duplicate order. That was customer service above and beyond. Typical delivery time is three days from placing order. Putting all new load range D tires and replacing all lights with LEDs on boat trailer for 25 foot cabin cruiser. The parts ordered were as advertised. 5 stars for customer service, will report back on products at end of summer.

Lights are working great. Very bright and waterproof.
Kelly P - 03/13/2017


Product itself is great and easy to install, no issues a year after installation. Customer service is second to none as well.


Except that I had to attach the plug from the old ones to the leads on the new one, this was an exact replacement of the non-LED "waterproof" tail light units that came on my boat trailer.
Had to replace one tail/brake light and 4 clearance lights in a year, so I switched it all over to LEDs. I had LEDs on my last trailer and didn't have to replace one in 8 years.
If the whole job took an hour, it was a lot.
Brighter, and LEDs don't really care if they get wet.


This light perfectly matches one of another manufacturer that I recently broke. Installation was simple and straightforward. Thank you to etrailer for your quick response and follow up. I will definitely look here first for trailer supplies.

Thanks for following up. The lights are still working perfectly. More importantly your follow up one year later speaks volumes about how you and your company feel about your Customer Service. Because it doesnt matter what the Company thinks about their Customer Service, it matters most what your Customers think about your Customer Service. And I know....I taught Customer Service Training Classes around the US for 10 years. Way to go....
Shawn M - 07/20/2018


Exactly what I was looking for as a direct replacement of my existing trailer light. At etrailer, I've always received fast, accurate service from people who care about their customers.

Excellent, no problems
Dennis P - 06/05/2019


Order was shipped promtly and the lights seem to be of good quality. Just waiting to have a free moment to put them on.

No problems at all. The lights work great.
John h - 10/02/2016


Perfect form, fit, and function replacement plus an upgrade from submersible to submersible and water proof.


great upgrade from bulb taillights


Love my lights!
Fairly easy to install
and is highly visible in daylight or darkness!


Light works great.


Super product, fast shipping


Nice light well made, easy to install, just what I needed.



item is exactly as described and pictur ed.


Quick delivery and easy to install.


Good quality, nice and bright!


wow big improvement


Just what I needed


Works and looks great.





Works great!

Show More Reviews

See what our Experts say about this Optronics Trailer Lights

  • Recommended Waterproof Trailer Lights For Boat Trailer Over 80-Inches Wide
    The difference between waterproof and submersible is that the submersible lights have drain holes to let any water drain out if any should find its way inside the light while the waterproof does not allow water in because it is sonically sealed. For a boat trailer I recommend the waterproof since it does prevent water from entering. It is always a good idea to unplug your trailer from your tow vehicle when backing your trailer into water for loading and unloading. We do not have lights...
    view full answer...
  • Can a Right Side Trailer Tail Light be Mounted Upside Down on the Left Side
    The lens style needs to face a certain way on light # STL26RB. Also, mounting it upside down could cause it to fall off because it slides onto bolt heads to secure to the trailer. The best option is just go ahead and get the proper left side light, # STL27RB, and either block out the bottom lenses or disconnect the wires inside the light that go to the bottom.
    view full answer...
  • Which Trailer Tail Light Goes with Left Hand Optronics Trailer Light, # STL27RB
    The Optronics Trailer Light, # STL27RB, is just the left hand (driver side) light. The right hand light that matches is Miro-Flex, Waterproof, Over 80 Inch, Rectangular Trailer Stop/Turn/Tail Light, # STL26RB. I have also included a link to the available trailer light kits we have available. Kits include a left and right hand tail light, wiring harness, hardware, license plate mounting bracket, and some include additional marker lights.
    view full answer...
  • Replacement Trailer Lights for Boat Trailer With Optronics ST36/37 Series Lights
    It sounds like you want to use the Miro-Flex LED Combination Trailer Tail Light - 8 Function - Submersible - 18 Diodes - Driver Side # STL27RB and Passenger Side # STL26RB as replacements for your current lights. That is perfectly fine, and the wires should match up. These are, however, a little longer and shorter when compared to your current lights. If you would like a direct replacement that matches the size of your current lights you can use the # ST37RB and # ST36RB. If you're looking...
    view full answer...
  • Recommendation for LED Waterproof Corrosion Resistant Rescue Boat Trailer Lights
    Since your rescue boat trailer is 188 inches (15 feet 8-inches) tongue to tail and 89-1/2 inches (7-1/2 feet) width I recommend the following: I recommend Optronics right side LED trailer light # STL26RB and left side LED trailer light # STL27RB. They are waterproof and corrosion resistant and will mount to all surfaces. These work great with trailers over 80 inches wide. The left side has a built-in license plate light. The rear clearance and side marker red LED lights # MCL13R2B are...
    view full answer...
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Info for this part was:

Employee Tyler C
Written by:
Tyler C
Employee Michael H
Expert Research:
Michael H
Employee Jeffrey L
Expert Research:
Jeffrey L
Employee Adele M
Updated by:
Adele M
Employee Wilson B
Updated by:
Wilson B
Employee Brian T
Updated by:
Brian T
Employee Dustin K
Video Edited:
Dustin K
Employee Cole B
Installed by:
Cole B

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