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.
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.
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.
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.
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
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.
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Ratings & Reviews
These reverse lights dress the back of of our flat beds nice and there real bright.
The lights are much brighter than the originals and the installation was easy. The website is easy to navigate and the service was fast.
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!
Replaced your OEM lights with up to date clarity and the same fit with no hassle!
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.
Perfect fit. Looks great with other led tailights. I've bought other items from etrailer in the past. I've never been dissatisfied.
Perfect fit 2017 Georgetown xl 369ds
LOOKS 100% Better ! Ty
Great and perfect replacement for the backup lights in my headache rack.
They look good just bought them as spar es
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.
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!
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.
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.
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.
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!
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.
Just what was needed to brighten up the rear of my horse trailer when loading and unloading in the dark
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.
Nice & bright - should definitely provide more light when backing at night vs. the old incandescent bulb.
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