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Fusion LED Trailer Tail Light - Stop, Tail, Turn, Backup - Submersible - Oval - Red/Clear Lens

Fusion LED Trailer Tail Light - Stop, Tail, Turn, Backup - Submersible - Oval - Red/Clear Lens

Item # STL68RB
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Optronics Trailer Lights - STL68RB
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10-1/8" x 3-1/16" Oval. 4-Function, waterproof light acts as brake, tail, turn, and backup light. Red lens set inside clear lens. Mounts to trailer surface with built-in flange - hardware not included. 4-Wire pigtail. 14 Diodes. Great Prices for the best trailer lights from Optronics. Fusion LED Trailer Tail Light - Stop, Tail, Turn, Backup - Submersible - Oval - Red/Clear Lens part number STL68RB can be ordered online at or call 1-800-940-8924 for expert service.
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  • Reviews (123)
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Optronics Trailer Lights - STL68RB

  • Tail Lights
  • Oval
  • LED Light
  • Red and White
  • 10L x 3W Inch
  • Surface Mount
  • Stop/Turn/Tail/Backup
  • Submersible Lights
  • Optronics

10-1/8" x 3-1/16" Oval. 4-Function, waterproof light acts as brake, tail, turn, and backup light. Red lens set inside clear lens. Mounts to trailer surface with built-in flange - hardware not included. 4-Wire pigtail. 14 Diodes.


  • Low-profile trailer tail light serves 4 functions
    • Stop light
    • Tail light
    • Turn signal light
    • Built-in backup light eliminates the need to cut holes in your trailer for 2 lights
  • Sonically sealed, waterproof housing and lens unit is submersible
  • 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
  • Durable polycarbonate lens and housing
  • Red lens set inside white lens with red and white LEDs
    • Red lens with red LEDs for tail light
    • Clear lens with white LEDs for backup light
  • Compatible with 12V DC systems
  • Mounts on surface of trailer with built-in flange - hardware not included
    • Snap-on, stainless steel trim ring (A68SSB) sold separately
  • 4-Wire pigtail
    • White wire for ground
    • Brown wire for backup light
    • Red wire for brake light and turn signal
    • Black wire for tail light
  • DOT compliant


  • Overall dimensions: 10-1/8" long x 3-1/16" tall x 1/2" deep
    • Tail light dimensions: 6-3/4" long x 2-1/8" tall
    • Backup light dimensions: 2-1/2" long x 2-1/8" tall
  • Mounting holes:
    • 9-11/16" Apart on center (horizontal)
    • 2-5/8" Apart on center (vertical)
  • Diodes: 14
  • Power draw at 12.8 volts:
    • Stop/turn signal light: 0.35 amps
    • Tail light: 0.05 amps
    • Backup light: 0.3 amps
  • Lifetime warranty on LEDs

Optronics STL68RB Fusion LED Combination 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.

STL68RB Optronics Fusion Combination LED Boat Trailer Taillight w/ Built-in Reverse Light - 14 Diodes - 4 Wire - Surface Mount - Red/Clear Lens

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Customer Satisfaction Score:

Customer Reviews

Fusion LED Trailer Tail Light - Stop, Tail, Turn, Backup - Submersible - Oval - Red/Clear Lens - STL68RB

Average Customer Rating:  4.8 out of 5 stars   (123 Customer Reviews)

10-1/8" x 3-1/16" Oval. 4-Function, waterproof light acts as brake, tail, turn, and backup light. Red lens set inside clear lens. Mounts to trailer surface with built-in flange - hardware not included. 4-Wire pigtail. 14 Diodes.


I recently ordered lights to replace
the original lights on my neighbor’s 20 year old DewEze Jay Bed and I couldn’t be happier with the entire process!
Everything arrived quickly and in perfect shape with plenty of cushioning to prevent damage.
The combination tail lights are simply perfect for the application and the reverse lights are BRIGHT!
I actually prefer these surface mounted tail lights over the gasketed style that is currently on my flatbed trailer.
In the future I will be ordering several sets of these to replace the lights on the trailer and for a flatbed that will be going on my own truck, I’m planning on using two sets in the truck’s flatbed with one set on the headache rack using the reverse lights as bed lights, I shouldn’t have any problems seeing stuff on the bed at night.


I built an off road high clearance rear bumper with tire carrier swing out for my Tacoma. The lights were added to the rear bumper for added safety. The reverse lights work well, and add much needed additional lighting while reversing. I am pleased with the lights, they are high quality, and the lenses are still clear after being exposed to the elements for about a year. I have no problem recommending them or etrailer to anyone.

Ricky M.


I put those lights on a rear bumper of a truck that I built. I have sense sold that truck, so I do not know of their condition. I will be going to for all my trailer and accessory lighting needs as a first stop, for the rest of my builds/ repairs.


I've bought a trailer hitch and brake,turn signal,taillight and backup light combination flush mount from u guys the trailer hitch mounted perfectly on my ford pickup i put a wooden bed on my pickup and needed some lights for it so i got these lights and super happy with the way they look on my wooden bed installed easily they are nice and bright would recommend your products to other people


5 th. set of lights our Fire Department have purchased, we are very happy with them.
Easy to wire up and to mount, They are very bright and the surface is a Big Plus.
Would recommend these lights to everyone out.



We are extremely hapy with the lights, we have had other Fire Departments look at them and have purchased them from E Trailer.


Working on a project truck needing a low profile taillights. Come across ETRAILER.COM and found just what I needed. Ordering online was easy and was very impressed on how fast I received them. Installation was made easy. 4 screws along the edge of the one piece sealed unit. 4 wire pigtail made wiring easy. Adding the finished trim to cover the screws gave it the look it needed. I would recommend this product and ETRAILER to anyone who is looking for stylish lights with ease of installation. Thanks ETRAILER.


After over a year, and 30k miles on a jeep that is well used, heavily wheeled and abused, I haven't had one single issue, great service and fast shipping by 10/10 would recommend


they are what I need to fix the lights on one of my techs work trucks.


I believe I made the correct decision to purchase this fir my trailer
Mfr wanted 3x more what you sold it to me for


Only site that had the part I needed. Easy check out and fast shipping. Will definitely use etrailer for future needs!


Really like these lights ,bought a set for my truck ,they are bright and easy installation had to buy another set for my brother highly reccomemd these lights


Very nice, all sealed lights, look good and work good.


Great LED product. Wires were no problem to hook up, 10 times brighter than 1157 bulbs uses way less power also. Could not find this flush mount tail-run -turn /w-back-up, anywhere else as reasonable priced as has.
Very satisfied, and pleased with purchase. Also, altho it has been one year, I received the pair of lights in just a few days. Customer for life. Thank You



Flawless and bright. Bought a second pair for my older truck camper. What a smart move. Great product, great company. Also, I asked dodge dealer about beefing up payload for truck, and he suggested etrailer. Super fast , RELIABLE, delivery. I love etrailer.




Love these. I find it VERY good to have reverse lights on our rather large bike rack. Really - if it relevant to have reverse lamps on a vehicle why not on a trailer??? It is only one extra wire - never understood why it is not standard practice.
The trim piece is great covers the screws and gives it a great finished look.

There are some extra pads on the PCB that these are made on - one day curiosity will get me to experiment with those extra connections and see what they might add. :)


I have these lights on two boat trailers now and they are by far the best I have ever owned. Having backup lights on a trailer is awesome. I completely rewired the trailer and built custom uprights to keep these out of the water. High viz and great product.


These lights are great! i wired them to my dirt bike hitch hauler and love the super bright back-up lights. Excellent service and fast shipping. You can't go wrong


The STL68RB combo. light looks to be a great product. I'm still building the trailer and haven't installed them but I did connect them to a battery and the are very bright. Even though they are flush mount, I think a thin gasket between the light and mount surface would be a good Idea. I am very satisfied with these and the rest of the lights in my order.


Product was as was expected
Great customer




Nearly finished with my gooseneck 18,000 GVWR trailer. All my etrailer parts arrived promptly and are of excellent quality.


One year after installation, these lights are still going strong. The visibility of the brake/turn/tail lights is exponentially greater, especially at longer distances on the interstate and in the daytime.


I think this is an excellent company, I was given updates and product arrived faster than expected!!




Happy with the purchase etrailer got my parts in quickly. Wasn't really sure if these were the lights I wanted but thanks to the videos etrailer provides makes it easier to choose the right lights.


Wayland VFD purchased these for our older trucks we are rebuilding, we are Very Happy we got these light, plug n play worked great on our 84 C-50, we will buy more of these for our other trucks

Show More Reviews

See what our Experts say about this Optronics Trailer Lights

  • What Size are the Mounting Holes for Optronics LED Trailer Tail Light # STL68RB
    I went out to the warehouse and measured the mounting holes on trailer tail light # STL68RB for you. I used digital calipers and got a measurement of 0.20 inches which is in between 3/16 and 1/4 inch.
    view full answer...
  • Fusion LED Trailer Tail Light Is Only Illuminating With Brake And Turn Signals
    Good news Les, I don't think your diodes are dying in the light. It sounds like there is a wiring issue with the lights because they work with the brake and turn signals like you mention. It sounds like either there is a bad connection with the ground at the trailer connector or the light itself. I recommend to check the ground for the trailer connector first to make sure it is grounded to a clean bare metal surface. Then check the grounds for the lights. I also recommend to take a look...
    view full answer...
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  • Is the LED Trailer Tail Light # STL68RB Sold In Pairs
    The LED Trailer Tail Light # STL68RB is sold individually. If you want a pair you would need to order two of them.
    view full answer...
  • Are All Replacement Oval Trailer Tail Lights the Same Size
    Since trailers come in different sizes and lights are used for different things, not all oval trailer lights are the same size. For example, the Optronics Trailer Tail Light # STL68RB is 10" Long x 3" Wide whereas the Optronics Trailer Tail Light # STL211RB is 6-1/2" Long x 2-1/2" Wide. I have linked our selection of oval trailer lights for you to filter through. You can choose different options to filter through like size, color, and whether it is LED or incandescent. If you are unsure...
    view full answer...
  • Comparing Fusion LED Trailer Tail Light STL68RP5B and STL68RB
    I would be happy to help! The Fusion LED Trailer Tail Light - Stop, Tail, Turn, Backup - Submersible - Oval - Red/Clear Lens # STL68RP5B you were looking at is sold in a quantity of one, so if you are needing two tail lights you will need to order a quantity of two. The difference between the # STL68RP5B with 5 wires and the # STL68RB with four wires is that the 5 wire version has separate turn signal and brake lights, where the 4 wire version has these combined like a standard trailer...
    view full answer...
  • How Many Lights Are Included in Optronics LED Trailer Stop, Tail, Turn, Backup Light STL68RB
    The Optronics LED Trailer Stop, Tail, Turn, Backup Light # STL68RB is sold as a single unit, with two required on a trailer. This LED light has a built-in mounting flange and has pigtail leads for connection to your trailer wiring. The wiring scheme is as follows: White wire is for ground Brown wire is for backup light Red wire is for brake light Black wire is for tail light A snap-on stainless-steel trim ring # A68SSB is available as a separate accessory.
    view full answer...
  • Availability of Submersible LED Trailer Backup Light Assembly
    We do have a nice selection of submersible backup LED lights avaialable that might work great as replacements on your boat trailer. I have attached a link that will take you directly to this selection. I recommend taking a look at the Optronics LED Trailer Tail LIght # STL68RB. This waterproof trailer light is sonically sealed with a waterproof housing and lens that is fully submersible. It measures 10-1/8 inches long and 3-1/16 inches tall. The low-profile, oval light serves 4 functions,...
    view full answer...
  • Troubleshooting Optronics Trailer Light part # STL68RB Reverse Light Circuit Doesnt Come On
    The problem has to be in the wiring you are using, unless the light itself is defective which is most likely not the case. I would recommend you take the light out and test each of the functions with a known working car battery. You can do this under the hood of your vehicle pretty easily. Ground the white wire to the negative terminal and then touch each of the remaining wires to the positive post of the battery. All of the light functions should work individually. Now try using more...
    view full answer...
  • Blinkers on Travel Trailer Not Bright When Running Lights Are On
    I would first ensure that the connections are correct in your wiring. If your running lights and turn signals/ brake are reversed this could cause the issue that you are having. The black wire on the Taillight # STL68RB should connect to your running lights on the trailer, this is usually the brown wire. The red wire from the taillights connects to the turn/brake wire which are generally yellow and green on the trailer. If that is right next I would check the ground connections as they...
    view full answer...
  • Will Adding Tail Lights With Backup Light Require Rewiring on 2018 Keystone Cougar
    In order to determine if you will be able to use a light with a backup light like the Fusion LED Trailer Tail Light # STL68RB you will have to check out your current wiring. This light has a 4-wire pigtail with the white being ground, brown for backup, red for brake and turn, and black for tail. More than likely you do not have a wire for the backup function since you do not have this function on your current tail lights. If you feel comfortable running a wire like # DW02413-1 from your...
    view full answer...
  • Taillight Recommendation for a Flatbed Truck Built on a Chevy Silverado
    I think the part # STL68RB would be perfect for your flatbed truck (looks good by the way). The dimensions of the this oval light are 10 inches long and 3 inches tall. They do stop/turn/tail/reverse light functions as well so you would be totally set. I attached a review video for this light for you to check out as well. You might also be interested in the stainless steel trim piece part # A68SSB.
    view full answer...
    Image 1 for
  • Is Additional Part Necessary to Prevent Breakaway Battery From Draining?
    If you have tapped into the red wire from the 12V battery lead as in the attached diagram, the power is coming from your truck's battery and not the breakaway battery and you'd be just fine. If you are tapped into the wiring in any other manner you will want to change it to the 12V battery lead. As for back-up LED lights I recommend the Transit LED Backup Light # BUL90CB which is a 7" clear light that is surface mounted, waterproof and corrosion-resistant. For a combination taillight/backup...
    view full answer...
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  • Does the LED Trailer Tail Light # STL68RB Have Reflectors Built-In
    The 10-1/8" x 3-1/16" LED Trailer Tail Light # STL68RB that you referenced is not reflective so you will need additional reflectors like part # RE11RB or part # RE18T. We do offer some light options that have reflectors built-in but nothing in this size. The Stainless Steel Trim Ring # A68SSB is purely for looks. If you don't want to install it then there is no need to as you can see from the attached installation video on an enclosed trailer.
    view full answer...
  • Are There LED Lights With Built In Resistors Available
    I have a solution for you, but none of the LED lights we carry come with built in resistors; in some cases adding a resistor to a trailer with existing LED lights isn't going to be necessary. In situations where hyper-flashing occurs they'd just need to add one into the wiring with the Load Resistor Kit # DI34ZR. These could just be wired in behind an LED light like the Fusion LED Trailer Tail Light - Stop, Tail, Turn, Backup - Submersible - Oval - Red/Clear Lens # STL68RB and allow them...
    view full answer...
  • Could Ground Wire of Optronics Trailer Taillight STL68RB Be Ran to Two Ground Circuits
    If you can verify for sure that the two circuits you mentioned on your truck's factory wiring are ground circuits you can run them both to the white wire of the # STL68RB and it will work great. If you aren't sure what the functions of the wiring on your vehicle are you could use a circuit tester like part # PTW2993 while applying the various lighting circuits.
    view full answer...
  • LED Taillight Recommendation for 2004 Chevy Silverado Flat Bed Conversion
    I have a solution for you, but since you're switching from incandescent to LED lights and taking into consideration the size of light you're going to need, I won't be able to recommend a 4 function light that covers all of those criteria; we also don't carry actual vehicle specific replacement lights, only the bulbs. When all is said and done, because of the issues that can occur when switching from incandescent to LED lights, you're likely going to require some wiring work. With that...
    view full answer...
  • Replacement RV Tail Light with 5 Wires
    We do have some RV light assemblies available that feature a 5-wire design, however they are not the same size or shape as the Optronics Fusion LED # STL68RB that you recently purchased. The Bargman Triple Tail Light # 47-84-005 should work well for you if it is the correct size for your existing mounting area. It uses a ground wire, a reverse light wire, a turn signal wire, a brake light wire, and a tail light wire. Its 3-light fixture design gives you a red LED tail light, an amber LED...
    view full answer...
  • Installation of Resistors on Fusion LED Trailer Tail Light
    The Fusion LED Trailer Tail Light - Stop, Tail, Turn, Backup - Submersible - Oval - Red/Clear Lens # STL68RB. The Stainless Steel Trim Ring for Optronics STL68RB Trailer Tail Light # A68SSB or the Snap-on Reflector Ring for STL78RB Series LED Lights - Red # A78RXB finish it up nicely. The LED lights don't always require resistors, but if you want to add them the LED Light Bulb Load-Resistors - # DI34ZR. If you are replacing all your trailer lights to LED then the # 20142 will work...
    view full answer...
  • How to Upgrade 4-Pole Wiring to Allow Use of Trailer Reverse Lights
    If the reverse light you are adding to your boat trailer is a single-function light like # BUL002CB (not a combination tail and reverse light like # STL68RB) and it has two wires, red and black, it should not matter which one you connect to ground. This is easy enough to check just by briefly connecting the light wires to your vehicle's battery; try it both ways (red to battery positive and red to battery negative) and see if it functions the same way with both wiring options. If it is...
    view full answer...
  • Recommended Lights for 28 Foot Gooseneck Horse Trailer
    The LED Trailer Tail Light - Stop, Tail, Turn, Backup - Submersible - 14 Diodes - Oval - Pigtail # STL68RB will help give you backup lights, with 4 bright white LED's. Since you stated that your main goal is to gain backup lights, the Sealed 6-1/2" Oval LED Trailer Utility Light, Flange Mount, 10 Super Diode - Clear # BUL78CB has 10 bright LED lights that will give you a much better light for backing up, so I recommend leaving your current lights and adding these brighter lights. They...
    view full answer...
  • How Are Trailer Tail Lights Wired
    It sounds like you are trying to install trailer lights on your 2000 Ford F-150? This is not something I recommend doing and you should stick with automotive lights, but if you do decide to do it, trailer lights will need to splice into wires on your truck so you need to find the wires in your Ford that accompany each function by using a circuit tester such as # PTW2979. You will then need to connect those wires to the wires on the trailer light. For example, the Fusion LED Trailer Tail...
    view full answer...
  • Installing the 4-Wire Pigtail of the Optrionics Tail Light # STL68RB to 5 Wires from Vehicle
    You may want to double check your 5 way from your vehicle, because normally the stop and turn signal functions are combined on a single wire and are separate wires based on left side and right side for turn signal. So, you'd have ground, left turn and stop, right turn and stop, running lights, and reverse as your 5 wire functions. I recommend using a circuit tester like # PTW2993 to test each pole function on your vehicle. The LED Trailer Tail Light - Stop, Tail, Turn, Backup - Submersible...
    view full answer...
  • How to Connect Backup Lights When Trailer Isn't Wired For Backup
    In order to use the backup lights on the # STL68RB you will need to run additional wire on your trailer. Depending on your trailer connector you may also need to swap out the connection. Starting off lets knock out the trim ring since you mentioned it, which is the # A68SSB. Moving on to the wiring, if you already have a 7-way you can run the yellow # DW02412-1 from the connector on your 7-way back to the lights. Yellow is a common reverse color and this will connect to the brown wire...
    view full answer...
  • Availability of Wiring Harnesses/Wiring Kits For a Trailer
    We do have several trailer wiring harness options such as these below. 35 Ft 4-Way Trailer Wiring Harness - Wishbone Style - 42" Ground # A35W42B 25 Ft 4-Way Trailer Wiring Harness - Wishbone Style - 25' Ground # A25W2GWB 40 Ft 5-Way Trailer Wiring Harness - Wishbone Style - 30" Ground - 5' Auxiliary Wire # A40W5B These above harnesses can be combined with our etrailer Trailer Wiring 7-Way Upgrade Kit # e99011 if you are using on a trailer requiring a 7-way. If you can tell me any specifics...
    view full answer...

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Info for this part was:

Employee Leah B
Edited by:
Leah B
Employee Michael H
Expert Research:
Michael H
Employee Jameson C
Expert Research:
Jameson C
Employee Adam R
Expert Research:
Adam R
Employee Jacob T
Video Edited:
Jacob T
Employee Chris R
Video Edited:
Chris R
Employee Dustin K
Video by:
Dustin K
Employee Amy B
Written by:
Amy B
Employee Hayden R
Installed by:
Hayden R
Employee Ronnie R
Updated by:
Ronnie R
Employee Brian T
Updated by:
Brian T

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