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Optronics LED Backup Light - Submersible - 10 Diodes - Round - Clear - Qty 1
(302 reviews)
Price: $33.56
In Stock
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Optronics LED Backup Light - Submersible - 10 Diodes - Round - Clear - Qty 1
Part Number: OPT89NR
In Stock
$33.56
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- All Info
- Reviews (302)
- Q & A (0)
- Videos (1)
- Photos
Optronics Trailer Lights - OPT89NR
Highlights
- Reliable In Any Weather: Sonically sealed housing keeps water out so the light stays on.
- Bright, Efficient Output: 10 white LEDs give clear backup light with only 0.26 amps at 12.8V.
- Fewer Replacements Needed: LEDs last 50 times longer with no bulbs or filaments to break.
- Clean, Recessed Fit: 5-1/2" round design mounts flush with included black PVC gasket.
- Road Legal: Meets DOT and FMVSS 108 standards for certified backup function.
- Built for Wet Use: Submersible design works even on trailers that go into the water.
Features to know about
Better Night Visibility: Bright 10-Diode LED Backup Light
Backing up in the dark is no fun, especially with old bulbs that barely light the way. This round backup light uses 10 white LEDs behind a clear lens to throw a bright, clean beam that makes reversing safer and easier. The LEDs are energy-efficient and draw only 0.26 amps at 12.8 volts while lasting up to 50 times longer than standard incandescent bulbs. No filaments means no more burned-out bulbs—just steady light every time you need it.
Tough Environments and Water Exposure: Fully Submersible Design
If your trailer ever sees water, this light is built for it. The polycarbonate lens and housing are sonically sealed into a single waterproof unit, so it’s completely submersible. Whether you’re launching a boat or running through heavy rain, moisture can’t sneak inside to damage the diodes or wiring. You get reliable performance even in harsh conditions.
Simple and Secure Mounting: Recessed Fit with PVC Gasket
Installing the light is straightforward thanks to its recessed-mount design and included black PVC gasket. It fits neatly into a 4-1/2" diameter hole, sitting flush for a clean look and added protection from bumps. The 5-1/2" overall diameter and 1-11/16" depth make it a solid fit without sticking out awkwardly from the surface.
Built for Compliance and Longevity: DOT Approved and Backed by Warranty
This LED backup light isn’t just bright—it’s certified for backup function in a 2-lamp system and meets FMVSS 108 requirements, so it’s DOT compliant. The LEDs are covered by a lifetime warranty, giving you confidence that you’re installing a light designed to last as long as your trailer does.
Specs
Dimensions
- Light dimensions: 5-1/2" diameter x 1-11/16" deep
Electrical
- Power draw at 12.8 volts: 0.26 amps
Lighting
- Diodes: 10
Warranty
- Lifetime warranty: LEDs
BUL11CRMB Optronics 5" Round LED Reverse Trailer Taillight - 10 Diodes - Clear Lens
Video of Optronics LED Backup Light - Submersible - 10 Diodes - Round - Clear - Qty 1
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Video Transcript for Hands-On with the Optronics LED Backup Light
Hello everybody. This is Jeff at etrailer.com. Today we're gonna take a look at this Optronics four inch round LED backup light with a clear lens for a quantity of one light. Now this is a round backup light for trailers and utility trucks. It is certified for backup light function in a two-ramp system when a pair of lights is installed. Now this is just for a quantity of one.
If you do need a second one, we do sell those separately. This is a sonically sealed waterproof housing and lens unit. It is submersible, and it uses LEDs. The LEDs make great replacements for incandescent lights, 'cause they'll last 50 times longer, they're more efficient, provide brighter light with less power output, and of course, no bulbs to replace, no brittle filaments to break. And you do get a lifetime warranty on the LEDs.
Now I do have this plugged in, so I'm gonna turn on some power, and you'll be able to see the backup light function. We'll go ahead and turn off the overhead lights, and you can see it is very bright. It is 10 white LEDs with a clear lens, and turn off our power. And it is a polycarbonate lens and housing unit. Does use a recessed flange mount with the included foam gasket when you install it.
And the light is designed to fit into a four and a half inch, go ahead and unplug it here, fits into a four and a half inch diameter hole. It does accept the industry standard PL3 connection plug, which we do sell separately. And this light is DOT, Department of Transportation compliant. It does meet the Federal Motor Vehicle Safety Standard 108's requirements. Power draw on this at 12.8 volts is 0.26 amps, and the light dimension, if we measure the overall, including the flange, five and a half inches, the light just itself is four inches.
And the total depth, including the part where the plugin is about one and 11/16 inches deep. But again, when you go to install this, just put your gasket on, line the holes up, and then you install it just like that. But that's gonna do it for the review on the Optronics four inch round LED backup light with the clear lens.
Customer Satisfaction Score:
100% were satisfied with this product
0% of customers were not satisfied
- Wrong item was ordered
Ratings & Reviews
4.7
302 reviews
by:
Christopher
01/23/2025
Nice & bright - should definitely provide more light when backing at night vs. the old incandescent bulb.
by:
Joe
12/13/2025
by:
Trevor
03/14/2025
by:
Mark
03/02/2025
by:
sidney
01/06/2025
by:
Mark
11/06/2024
by:
Kevin
08/26/2024
by:
Sherman
07/03/2026
With several of the MCL31 clearance I had half or all of the LEDs stop working. I did not at the time realize they had a lifetime guarantee so I just threw them away. When A bunch of the LEDs in both BUL52CBs and about half of the turn/stop LEDs in the STL37RB went out, I contacted etrailer and they happily replaced them, but it took a couple of weeks and I had to pay the shipping. When I replaced all of my trailer lighting, I had thought that I would never have to worry about it again. LEDs should last forwver. That turns out to not be the case and it is a lot harder to change out hard wired LEDs than socketed incandescent bulbs. I wish I could find reliable long lasting LED trailer lighting.
by:
Jeffrey
10/11/2026
Second set I have purchased, perfect for my application which was an odd size. Great quality
by:
Seadog
08/18/2026
Perfect replacement for the reverse lights on boat trailers. A better buy than ordering from the trailer company.
by:
Scott
03/23/2025
Just what was needed to brighten up the rear of my horse trailer when loading and unloading in the dark
Scott
3/24/2026
Lights have withstood being in the weather all year and still function just as well as they did after installation. Excellent Product.
by:
ConnerCattleCompany
08/11/2016
Nice lights. I have the 36 diode oval LED lights mounted on a flatbed truck as reverse lights and they are not near as bright as these 10 diode lights. I have the 10 diode lights mounted inside a 6ftx20ft stock trailer on a toggle switch. There is one at the front and one at the back. They give off plenty of light to load and unload horses and cattle in the dark. I would buy these again for the next trailer I rebuild. The team at etrailer.com is top notch as well. Your order will ship the same day and arrive in a timely manner. If it does not they will tell you why. Great people to do business with.
by:
Michael
02/01/2018
These Lights were a perfect fit for my RV. They easily fit over the OEM flush mounted incandescent lights that were very dim by comparison. The soft rubber gasket that came with them made installation very easy and watertight. As you can see in the picture, I replaced both my brake & back-up lights. I've had several compliments on their looks by people that saw my RV before I installed these too! But most of all, I'm very satisfied with the huge increase in brightness when I need it. I would recommend these for any do-it -yourselfer out there to upgrade existing trailers, or for something you're building!
by:
Bruce S
03/16/2017
Product exactly as needed. Existing lamps last about 8 to 10 weeks as docking lights on my motorhome; there are four - one at each wheel. These lamps fit perfectly and are much brighter. My expectation is that these lamps will last more than a year(?) We'll see.
Bruce S.
3/16/2018
So far these lights have exceeded my every expectation! Absolutely no problems whatsoever. Thank you for making a quality product that I can depend on
by:
Steve
05/03/2017
I purchased these Submersible LED bulbs for my boat trailer for two reasons. The first is so road traffic is aware of my intentions of backing up and the second is to make it easier to back my trailer into my driveway at night. The only thing that I find disappointing about this product, is that the wires are not sealed. You have to plug a pigtail in to power the bulb. Although they say it is watertight, I still plan on sealing the plug with some marine grade silicone sealant. Otherwise I am very satisfied with the way these bulbs light up my path of travel.
by:
Todd R.
11/20/2018
I purchased this Optronics LED Backup Light to supplement the amount of reverse light that the T Bargman LED taillights provide. I installed them on a 1991 Ford E450 21 passenger church bus. This light is intended to be installed in a steel trailer frame with a rubber grommet which I did not order. I did not realize that a grommet was required. I probably would have ordered the grommets just in case I needed them but it was not made obvious to me on the website or recommended that I may want to consider including them in the order. After receiving the package and examining the light I realized that there was no way to secure the light into place without something. I went back to the website and looked up the light again and drilled down to the bottom and there it was, the grommet that I needed. Why didn't the site make the recommendation more obvious or suggest this part before ordering like it did with the wiring lead...? I was able to still make the lights work, it just took a little bit of planning which was required anyway with this custom retrofit application. I cut a precise hole into the fiberglass so that I could recess the light, which was my original plan even before realizing that the light required a grommet. I recessed the light in the hole and glued it in place with silicone. Time will tell if this was a good idea or not. I wish that I would have ordered the elbow wiring leads in stead of the straight ones. I ran into a clearance issue with the straight lead and had to modify them as well.
by:
Dylan J.
06/27/2020
These lights have been an outstanding upgrade from the original incandescent brake/turn/tail/reverse lights on my department's 1992 water tanker. The diodes in the lights are really bright and can be seen clearly at nighttime or during the day. 10 out of 10, would recommend!
by:
Fred Gordon
03/30/2018
the light fixture works very good except when used in the bracket, it leaves the back exposed to being hit by road debris. There is no cover on the light fixture. Therefore i went to a local fabricator and he made a fixture out of 2x4 steel tubing. The gasket fit perfectly but when i went to us the 2 wire pigtail, it was at the wrong angle for the light. I purchased another one locally. just wanted you to know that i could only use the light and the gasket.
Thank you for your prompt service.
Thank you for your prompt service.
by:
Rick
10/21/2026
Nice and bright! Fits my needs.
by:
Mike
08/27/2026
Looks and works good
by:
Shawn
01/18/2021
Great and perfect replacement for the backup lights in my headache rack.
by:
JJ
03/07/2015
These lights are great. They light up much better than the stock incandescent bulbs that were in my ranch hand bumper. I can see great when backing my truck up now. They also fit better than the original bulb housings.
by:
kc
07/06/2014
unimaginable improvement from one ancient and lackluster incandescent bulb to 10 LED diodes-requires modification of hole but is fairly simple and worth the effort-I used it as the porch light on my '72 airstream reno-great result!
by:
David Ross
08/08/2026
Not to bright i guess they will do
by:
Matthew H.
12/26/2016
The pictures speak for themselves !! Couldn't be happier Just gotta get the taillights that match now. STL190RB
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See what our Experts say about this Optronics Trailer Lights
- Recommended Round Trailer Tail Light With Bright White And Red Light Functions Hey Rob, The best option for both a red and clear lens that's going to produce a bright light is going to be the Fusion LED Hardwired Trailer Light # OPT97NR. It's the same 5-1/2" overall diameter as the # OPT89NR (BUL11CRMB) but it does have to be hardwired instead of using a plug-in connector. You can just cut of the old connector from your trailer's wiring and splice the new light in with some heat shrink butt connectors # DW05744-10.
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Info for this part was:
Edited by:
Lindsey S
Installed by:
Jeff D
Updated by:
Wilson B
Updated by:
Amanda K
Written by:
Justice A
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Kate F.
10/13/2026
What a unique application Jeffrey! Is this part of a kids train?