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Optronics LED Backup Light for Trucks or Trailers - Submersible - 36 Diodes - Oval - Clear Lens

Optronics LED Backup Light for Trucks or Trailers - Submersible - 36 Diodes - Oval - Clear Lens

Item # BUL52CB
Our Price: $46.13
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Shipping Weight: 0.28 lbs
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6-1/2" x 2-5/16" Oval. Waterproof, LED trailer light is certified for backup light function in a 2-lamp system when a pair of lights is installed. Durable polycarbonate housing and lens. Recessed mount with grommet. Accepts 2-prong plug. Great Prices for the best trailer lights from Optronics. Optronics LED Backup Light for Trucks or Trailers - Submersible - 36 Diodes - Oval - Clear Lens part number BUL52CB can be ordered online at or call 1-636-306-4830 for expert service.
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  • Reviews (23)
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Optronics Trailer Lights - BUL52CB

  • Tail Lights
  • Oval
  • LED Light
  • White
  • 6-1/2L x 2W Inch
  • Recessed Mount
  • Backup
  • Submersible Lights
  • Optronics

6-1/2" x 2-5/16" Oval. Waterproof, LED trailer light is certified for backup light function in a 2-lamp system when a pair of lights is installed. Durable polycarbonate housing and lens. Recessed mount with grommet. Accepts 2-prong plug.


  • Oval backup light for trailers and utility trucks
    • Certified for backup light function when installed as a pair in a 2-lamp system (second light sold separately)
  • High diode count creates a strong light pattern
  • Sonically sealed, waterproof housing and lens unit is submersible
  • 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 housing and lens
  • Clear lens over white LEDs
  • Compatible with 12V DC systems
  • Recessed mount with grommet (A70GB - sold separately)
  • Accepts industry-standard, 2-prong plug (A49PB or A45CB - sold separately)
  • DOT compliant
    • Meets FMVSS 108 requirements in any 360-degree position


  • Dimensions: 6-1/2" long x 2-5/16" tall x 1-13/16" thick
  • Diodes: 36
  • Power draw at 12.8V: 0.125 amps
  • Lifetime warranty on LEDs

Optronics BUL52 Series LED Backup 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.

BUL52CB Optronics High Count LED Backup Light for Utility Trucks or Trailers - Submersible - 36 Diodes - Oval - Clear Lens

Alternate part number: BUL-52CB

California residents: click here

Customer Satisfaction Score:

Customer Reviews

Optronics LED Backup Light for Trucks or Trailers - Submersible - 36 Diodes - Oval - Clear Lens - BUL52CB

Average Customer Rating:  4.5 out of 5 stars   (23 Customer Reviews)

6-1/2" x 2-5/16" Oval. Waterproof, LED trailer light is certified for backup light function in a 2-lamp system when a pair of lights is installed. Durable polycarbonate housing and lens. Recessed mount with grommet. Accepts 2-prong plug.


Very disappointed in the brightness, especially considering the price. I replaced my older incandescent backup light on one side only to compare. The old light lit up the area behind the trailer MUCH better than the LED light. The LED light is much more directional and the old light more like a flood light. If I got down on at eye level with the lights the LED light appeared to be only slightly brighter. The incandescent of course had a much warmer glow but it lit up the back of the garage much better than the LED. I installed the backup lights a couple years because I wanted an assist light when backing the boat in the dark. I'll keep these ONLY because I want to match the LED tail lights that I just installed. I am much happier with those so will keep both (STL22RB). Bottom line, at roughly $40 a piece I expected much better when compared to the incandescent lights they replaced. Definitely NOT worth the money in my opinion.

We have noticed the same. These 36 diode versions are using much older LED technology and have less light output than some of the newer 10 diode models. Part BUL10CB will provide much more light output than this unit, and it even costs less.These older LEDs offered a reduced amperage consumption, but not a brightness increase over their incandescent counterparts. Newer LED technology consumes less and outputs more than the incandescent equivalents.
-- Etrailer Expert Patrick B - 05/24/2013


Used for backup lights on horse trailer and hoped they would double as loading/staging lights. Adequate for backup only. Expected more from that many diodes at that price. Well-made product that should update to easily available higher performance diodes.

Remember, DOT regulates how bright a back up light can be. Since Optronics builds this as a back up light, it will not be any brighter than reverse lights are allowed to be under DOT regulations.
-- Etrailer Expert Patrick B - 04/22/2013


The boat ramp I use has no lighting and I was hoping these LED backup lights would be bright enough to show me the way. The light from them is diffused quite a bit and not as directional as I had hoped.
They are still brighter than the ones I had before. I then bought some reflective cones to put on the edges of the ramp and they light up real well and can be seen from quite a ways away.


Ordered and received items fast. Installed as backup lighting on my boat trailer. Connecting was easy and lights work great.


Great set of reverse lights. Shipped within two hours of ordering. Great customer service.

I have these lights wired to a toggle switch and they still work fine. I would not mind if they were brighter, but they still light up my flatbed well enough that I can hook up a gooseneck trailer in the dark. I have ordered other products from etrailer and the customer service is still great.
ConnerCattleCompany - 01/24/2015


I am extremely happy with the replacement LED light I received so I can replace my old incandescent fixture!

The light were just what I was looking for, bright, clean looking and good price.
Dennis - 01/14/2018


works swell as a backup light on my parent's Polaris ranger.


Product has replaced the old single bulb...nice and bright in the dark...if your current gasket is in good shape and still flexible it is an easy in and out replacement with a small screwdriver...


Great replacement for my halogen that kept burning out with this sealed light.


Product was as described,shipped quickly. Functioned well after
I installed them.


Disappointed there is no Template and no instructions on line or with the items.


Great people , products , fast shipping Thanks again we'll be back


Need exact hole size to cut. Trial and fit took forever. Have not had a chance to try it out backing up my dark driveway.


Real clean Look


Makes a great backup light for my Jeep project. Can't wait to see how well it works at night in the woods.




Great product.


Good product!! Very happy with installation on a 2004 dodge 2500 with cummins Diesel. They worked and looked great!!!


Very Bright Lights....



VERY Bright... exactly what I was looking for. Thank you.


just what i was looking for.


rugged and bright


See what our Experts say about this Optronics Trailer Lights

  • What Is the Brightest 6-1/2" Oval Backup/Utility Light
    If we are strictly speaking candela then the brightest oval 6-1/2" utility light we offer is the Optronics LED Trailer Utility Light part # BUL72CB which is rated at 123. If you can use a backup light then we offer the Optronics LED Backup Light part # BUL52CB which is rated at 175 candela.
    view full answer...
  • What is the Brightness Output of the Optronics 6-1/2 Inch LED Trailer Lights
    Optronics uses candelas to rate the brightness of their lights instead of lumens and the output of the Optronics 6-1/2 inch Oval LED Back Up light, # BUL52CB, is 175 candela. At a distance of 1 foot, the candela output is equal to the output in lumens. This light has the highest candela output of any of our 6-1/2 inch oval LED lights. The LED 10 diode light, # BUL72CB, has an output of 123 candela and the LED 10 super diode light, # BUL78CB, has an output of 125 candela. Another thing...
    view full answer...
  • Output of the Optronics 6-1/2 inch Oval Trailer Lights
    Optronics uses candelas to rate the brightness of their lights instead of lumens and the output of the Optronics 6-1/2 inch Oval LED Back Up light, # BUL52CB, is 175 candela. At a distance of 1 foot, the candela output is equal to the output in lumens. The next brightest 6-1/2 inch oval light would be the part # BUL22CB which has an output of 160 candela. The part # BUL10CB that you referenced has a candela rating of 125 which would make it the dimmest offering which I would not recommend...
    view full answer...
  • Recommended Extremely Bright Trailer Reverse Light
    I'll do my best to be just as helpful as Rebecca. I do have a few options for you depending on the exact size you'll need. I know you said you aren't worried about being compliant with the DOT but the best options we have both are. The Optronics GloLight LED Backup Light # BUL111CB is a 6-1/2 inch by 2-3/8 inch light that will fit into an opening of 6-7/8 by 2-1/2 inches. It's a clear lens with 22 diodes. All of the different sizes and shapes of GloLights we have get very good reviews...
    view full answer...
  • Can I use a Halogen Spotlight as a Reverse Light to See Better Behind my Horse Trailer
    These will certainly provide enough light. My concern would be that they provide too much light and would considered rear-facing headlights. There are DOT restrictions about how bright rear-ward facing lights can be so as drivers behind you are not blinded. The Custer Halogen Light you were looking at does not comply with this regulation. I would suggest instead, using brighter reverse lights. We have several backup LED lights that will be brighter than standard incandescent lights, but...
    view full answer...
  • Why is the Optronics LED Clear Oval Trailer Utility Light # BUL72CB Not Certified as a Backup Light
    The Sealed, 6-1/2 inch Oval LED Trailer Utility Light, Flange Mount, 10 Super Diode - Clear, item # BUL78CB, does not meet DOT FMVSS 108 requirements, for backup lights so it cannot be sold as a backup light. That does not mean that the light cannot be used in that situation for applications where a DOT requirement does not need to be met. In short, the Trailer Utility Light, item # BUL78CB, can be used as a backup light, but if your trailer needs to meet DOT requirements you will need...
    view full answer...
  • What Is The Amperage Draw On The Optronics 55-Watt Halogen Utility Light # QH16CTS
    The amp draw is 4.5 amps per light on the Optronics 55-Watt Halogen, Multi-Directional, Area Utility Light # QH16CTS. If used on your 2004 Chevy Silverado you will need to use the Draw-Tite Wiring Kit # 118151. This kit will allow you to run a separate 12 gauge wire with a 10 amp in-line fuse to the positive side of the vehicles battery. This will keep the lights from drawing power on your factory wiring harness which could cause problems. You will also want to be careful when installing...
    view full answer...
  • Installation of Extra Reverse Lights on 2006 Ford F-250
    The amp draw is 4.5 amps per light or 9 amps for 2 lights on the Optronics 55-Watt Halogen, Multi-Directional, Area Utility Light # QH16CTS. With that much amperage draw I would not recommend to connect them to your factory wiring harness. It could cause overloading problems and damage your vehicles wiring harness. If you want to install the 55-watt lights on your 2006 Ford F-250 you will need to use the Draw-Tite Wiring Kit # 118151. This kit will allow you to run a separate 12 gauge...
    view full answer...
  • 12 Volt Interior Light Recommendation for Lighting Up Work Space
    I have a similar solution that will work for you, but the light you mentioned won't have the Lumens you need. The Optronics LED RV Interior Light # RVILL34 has 2 ratings. The raw output, unobstructed and in testing conditions the light can produce 920 lumen. The effective lumen output in real-world scenarios is 815 lumen. But the watts are low; 1.22 at 815 lumen. This also has an easy to use switch on it for you to use.
    view full answer...
  • is there a Certain Amount of Time LED Trailer Light BUL52CB Can be On
    As you probably already know, LED lights draw much less power than regular bulbs. They also do not get as hot so you can have them on longer without worrying about them burning out. There is no official amount of time the lights can be on. As far as which would work better as an interior dome type of light, I would go with # BUL52CB because it has more diodes which would produce more light than # BUL22CB. With either light you will also need a pigtail # A45CB and a grommet, # a70gb.
    view full answer...
  • What Gauge Wire to Use to Install the 6-1/2" Oval LED Trailer Back Up Light # BUL52CB
    The wire gauge used in the recommended pig tail # A45PB for the Sealed, 6-1/2" Oval LED Trailer Back Up Light # BUL52CB is 20 gauge. So I would go with that as the minimum. The light uses LED's which hardly draw anything.
    view full answer...
  • Recommended Backup Light Similar to the Optronics LED Oval Trailer Tail Light
    The Optronics LED Backup Light part # BUL52CB will work great as a backup light and can be used in conjunction with the Optronics LED Trailer Tail Light part # ST70RB. They are both oval in shape and have a high diode count so they will be very bright.
    view full answer...
  • Comparing Brightness Ratings of Optronics LED Tail Lights
    The Optronics LED Backup Light # BUL22CB is brighter than backup light # BUL10CB although I would not describe it as significant, though that can be subjective. Optronics measures the brightness of their lights using candelas and the # BUL10CB has a candela rating of 125, while the # BUL22CB has a candela rating of 160. There is also the backup light # BUL52CB which has a candela rating of 175. The reason I would not classify the brightness as significantly higher is because these lights...
    view full answer...
  • Bright White Oval Taillight for Reverse Light
    Probably our best option would be the Backup Light part # BUL52CB. This has 36 diodes and is incredibly bright. The dimensions are a bit bigger though at 6-1/2 inch by 2-5/16 inch. For a grommet you'd # A70GB and for a harness part # A45CB.
    view full answer...
  • Is the LED Oval Trailer Utility Light Brighter than the Incandescent Oval Trailer Back Up Light
    I went out to the warehouse and checked all of our clear oval lights. The Sealed, 6-1/2 inch LED Clear Oval Trailer Utility Light, 10 Diode, item # BUL72CB, whiter light than the light emitted by the incandescent Oval Trailer Back Up Light, item # BU70CB, but the light does not illuminate as large an area as well. The advantages of the LED light is that it does not draw near as much amperage as the incandescent light, it lasts much longer and it does not produce the heat produced by incandescent...
    view full answer...
  • What is the Brightest 12 Volt Fully Submersible Backup Light Available
    If you are looking for a round backup light then I recommend part # BUL53CB but if you are looking for an oval backup light then I recommend part # BUL52CB. Both of these backup lights are completely submersible. The round light has 36 diodes with a 275 candella rating and the oval light has 36 diodes with a 175 candella rating therefore the round light will be a bit brighter than the oval light. In order to mount the round light you will also need part # A45GB or part # A70GB for the...
    view full answer...
  • What Size Hole Will the Optronics Light part # BUL52CB Install Into
    The easiest way to cut the oval hole for the Rubber Grommet, # a70gb, that would be used with the Optronics Light part # BUL52CB in my opinion, would be to use a Light Mounting Bracket for 6-1/2 inch Oval Trailer Lights, # BK70BB, as a template and then use a hole saw the correct size to cut a hole on each end of the mounting location. Then, use a angle grinder with cut off wheel or a reciprocating saw with metal cutting blade to cut the straight top and bottom sides of the hole. The correct...
    view full answer...
  • Wiring Harness, Grommet and Bracket for Backup Light for Truck or Trailer BUL52CB
    Backup light # BUL52CB does have a 3-prong receptacle but will accept a 2-prong pigtail harness (not included) # A45CB. The grommet is not included but the one you would need is # a70gb. You can mount the lights using the grommet and cutting a hole in the trailer surface or you could mount them with the grommet in bracket # BK70BB.
    view full answer...
  • Need Bright Backup Light on Boat Trailer for Nighttime Use
    We do offer a super-bright LED-type backup light that is fully submersible, part # BUL52CB from Optronics. This 36-LED light uses a 2-wire pigtail # A45CB for connection and can be mounted using rubber grommet # a70gb along with steel bracket # BK70BB. LED lighting combines high-efficiency with high light output and this unit should serve you well without placing much additional load on your trailer wiring.
    view full answer...
  • Is Optronics # BUL52CB Back-Up Lamp Submersible
    The # BUL52CB lamp you referenced might work for the purpose you describe, but a bracket like part # BK70BB and grommet, part # A70GB would be needed. You would also need the wiring pigtail, part # A45CB. The lamp draws a minimal .275 amps at 12.8 volts. The lamp is submersible, but the contacts at the rear where the pigtail plugs in would be vulnerable to moisture. If you decide to go this route, I would recommend keeping the contacts well coated in dielectric grease, part # 11755 to...
    view full answer...
  • Will Adding Optronics LED Backup Light to Kayak Trailer Require Rewiring the Trailer
    It sounds like you are wanting to replace your incandescent backup lights on your kayak trailer with LED lights like the Optronics LED Backup Light for Trucks or Trailers # BUL52CB. If that is the case, all you will need to do is replace the current lights with the LED lights. The # BUL52CB accept the industry standard 2-prong plug like the 2-Wire Pigtail for Optronics Backup and Utility Trailer Lights - 2-Prong PL-3 Plug # A45CB. If you do not have existing lights, then you will have...
    view full answer...
  • Recommendation for Utility/Work Lights Installed in Toolbox to Light Rear of Truck
    I have several lighting options for you, but a trailer reverse light, like # BUL52CB that you mentioned, is not going to provide you with the light you are looking for. To provide you with light at least 8 feet away, I recommend going with a utility/work light. For mounting flush inside the toolbox as you mentioned, the best option will be the Vision X LED Light Strip # XIL-SL12. This light has an effective lumen output of 300 lumens and is 12 inches long x 1 inch wide x 1/2 inch deep....
    view full answer...
  • Parts Needed to Add LED Backup Light to Trailer
    Hello, in order to add a LED backup light to your trailer, you could use a setup like the LED Trailer Back Up Light, # BUL52CB, with Rubber Grommet, # a70gb, and Mounting Bracket, # BK70BB. You will also need a 7-Pole Trailer Connector like the # PK12706 to be able to connect to the 7-way on your 2011 Mercedes-Benz ML550 and additional wire like # 16-1-1, which is sold by the foot, to connect the new backup light. First you will need to cut the 4 pin flat connector off of the trailer...
    view full answer...

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