This 4-5/16" round Optronics LED trailer light puts out a clean, bright red glow that outshines and outlasts old incandescent bulbs. The LED setup handles all three functions—brake, tail, and turn—without drawing much power. At 12.8 volts, it only pulls 0.16 amps for stop and turn signals and just 0.008 amps for tail lights. It’s more efficient, more durable, and comes with a lifetime warranty on the LEDs, so you won’t be dealing with burnt-out bulbs again.
Wet conditions aren’t a problem for this light. It’s completely sealed with a waterproof design that keeps moisture out even when submerged, making it a solid choice for trailers that see the ramp or rainy roads. The polycarbonate lens and housing hold up against wear and corrosion, keeping the light working and looking good long-term.
Loose or corroded wiring can be a real headache, but this light’s weathertight connector keeps everything sealed up tight. It’s built to block out moisture and dirt for consistent power delivery. It comes with a pigtail ready to hardwire to your trailer, or you can use the AL45PWTB adapter (sold separately) to connect it to standard 3-prong plugs.
Whether you prefer a clean recessed mount or a surface setup, this light gives you options. It installs easily in a grommet (A45GB – sold separately) for a flush finish or pairs with an optional bracket (BK45BB – sold separately) if you’d rather not cut into your trailer body. Either way, the fit is solid and professional-looking once installed.
Safety compliance is built right in. This light meets all DOT, FMVSS 108, and CMVSS 108 requirements for brake, tail, and turn lights—so you can tow knowing your setup is road-legal and highly visible day or night.
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Today we're going to be taking a look at part number S T L four one three R M B. This is the Optronics LED trailer light. The round trailer light is going to serve three functions. It's going to function as your stop light, your tail light, and your turn signal light. It's going to feature the sonically sealed water proof housing and lindge unit, so this trailer light is submersable. LED's are going to make great replacements for incandescent lights, they're going to last a lot longer.
They're going to be more efficient, and you don't have worry about replacing the bulbs, and you don't have to worry about brittle filaments. We're going to have the polycarbinate red lens and the polycarbinate white housing, very strong and durable. This is designed to be a recess mount installation with a mounting grommet. Your mounting grommet is sold separately. Here on the back side we have the weather tight connection point. This does require an adapter, part number A L four five P W T B, that is sold separately. That is required in order to work with an industry standard three prong plug.
The light is department of transportation compliant. We're going to take a few measurements real quick, starting with the overall diameter. That's going to give us a measurement of about four and five sixteenths of an inch. If we measure the depth, that's going to give us a measurement of about eleven sixteenths of an inch. If we take a look at the depth, including the plug here on the back, that's going to give us a measurement of about one and five eighths of an inch. Now, this lights going to contain four diodes or four LED's. It's going to have a power droll of twelve point eight volts.
For the stop and turn lights it has zero point one six zero amps. For the tail lights, zero point zero zero eight amps. Optronics is going to put a lifetime warranty on our LED's, we're going to go and hook it up to our external power supply, that way you can see what it looks like with power running to it. So here's what the plus looks like that goes with it. Plug it in, it snaps in there for a nice, tight, secure connection. So you can see here, it sends out a nice, strong, consistent signal.
It's going to have four LED's, this is going to be the tail light function when we apply our brakes. You see how that illuminates for a stronger signal output, and it's going to function the same way when we activate our turn signal. That's going to do it for today's review, part number S T L four one three R M B.
Ratings & Reviews
Direct replacement with no issues, excellent packaging and fast delivery.
I am in the process of renovating a 1966 Airstream. I wanted to upgrade the tail lights and the clearance lights. I found etrailer.com on a web search. I ordered the round 4" LED, rubber 4" grommet, and Oval LED clearance light. The round stop with grommet adapeted perfectly into the lens on the Airstream. I will feel so much safer now with the added visability. The lights are stellar.
Easy to order online, Items arrived during the expected delivery date. Have always had good luck with Optronics products. Just waiting for the truck to get back to the shop so I can replace the old incandescnt lights with the new LED lights.
Exact match to the old light
I had to replace one burned tail light on my 2005 cargo trailer. I bought two and replace the other one as well. They work perfectly. The size and the 3 pins connction are the same as the original. A little downside is regarding the packaging. I would expect each light wrapped individualy to avoid the rattling in the box. See pics.
They work great and we're fairly easy to install as a replacement for the old style brake lights with bulbs....
Good job easy to order and I will be b ack
I have a Haulmark utility trailer. One tail light was giving me trouble and I tried fixing it but decided to just replace it with these. They are brighter and fit right in to the old grommet. They were a bit loose so I wrapped some e-tape around them and they are staying in place just fine. I also ordered the pigtails and soldered and heat-shrinked the connections - the factory connecting were "scotch-locks", which I hate. After I did this, I looked closely at the old lights and realized that there was a 3 prong plug which I might have been able to use rather than doing new connections and soldering them, but by doing what I did, I now have tight connections and I can easily replace the light if I ever have to (I got rid of the scotch locks). Yes, I could maybe have soldered the old connections and used the old plug, but it was constructed in such a way that I didn't realize it was there (I thought it was part of the light body). My picture shows the old light and the old plug disconnected from it and the new LED in place on my trailer. It works great - glad I did this. It's much brighter than the old light.
THESE ARE AWESUM. They even look good when off !! Cant wait to BLIND some tailgaters. Drivers who tailgate boat trailers need to be tazed. I ADDED a Sequential Turn module to each side making them even better. A 3rd brake light wire controls others so only E-Trailers Optronics blink. SUPER BRIGHT !! These pull no power at all so I run 30 LED units or hundreds of bulbs all around the trailer.
Bought these LED Stop/Tail lights for my new dump trailer. The factory stop/tails are mounted very low, and any car directly behind me blocks my lights from the 2nd or 3rd car behind me. So I mounted these new ones up as high as I could to let people know I am stopping or turning. I also mounted a side marker light so I could see where the trailer was while backing up at night. The factory marker lights are so low I can’t see them in my mirrors because they are blocked by the step on the drivers side and the spare tire on the passenger side. I am a retired 18 wheeler driver of 47 years.
Perfect. Exactly what I wanted and needed. Fast shipping. Great communication! Thank you.
I bought these lights for a boat trailer. They are very bright and we're easy to install. I would recommend to anyone looking for replacement lights
Best in class service…quick delivery and the right price.
SuperFast Shipping
Great service the exact replacement nee ded.
Great product if you have an odd ball trailer light set up like I do that requires a center mount position plug! Fast east purchase and fast shipping, great company to deal with!
This light was almost an exact match for the stock light that came on the camper. I bought 2 and replaced them both, and they seem to be a little bit brighter than the originals, which I am glad with.
This light was exactly like described. I purchase a lot on line and use amazon prime for free shipping. I could not find this light on amazon and was very impressed that etrailer.com had very reasonable shipping prices. Instead of gouging the cost was in line what normal shipping cost would be. The shipping and tracking were spot on and the lights were delivered as promised. A VERY good company to work with.
Exact match, super fast shipping. 100% satisfied.
We are looking for a supplier of trailer parts .. they had what we needed.
We build aprox 60 trailers a year. I am going to take a good look to see what else we can get from them.
Identical size, shape & function to the original taillight on a 2-yo Master Tow dolly. Replacement taillight from the mfg didn’t fit the original taillight bezel. This one is an exact fit.
My experience with Etrailer was excellent again as always. Always appreciate the explanation and videos to confirm correct product and installation before purchase. Delivery is always awesome as well.
I have not hooked it up to power, but I'm sure it will work. THe only disappointment I had was the light I removed had a rubber pad to help seal the screw holes and wire entry to the back of my trailer to keep moisture out. This light does not have that and it is not available from your company.
Exact replacements for my old tail lights.Fit perfectly. They also solved the issue. Tho old tail lights were allowing the blinker current to back track through the clearance lights. One of tail lights had water in it and when it flashed the clearance lights flashed too.
While I've not yet installed these they look like good replacements for the OEM lights. They are the correct style, size and the screw hole placement seems to be correct. My only reason for giving them an average rating is that they don't come with any gaskets. The original lights have a gasket between the back of the light and the wall of the camper. While the light unit itself is sealed the wires come through a hole in the camper wall and without a gasket the possibility of leaks is there. I will likely buy some gasket material from an auto parts store and make my own. No, I don't think the camper sealant will work as well as a rubber gasket.
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