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Optronics LED Trailer Light w/ Grommet - Marker and Clearance Light - Round - Red
Optronics

Optronics LED Trailer Light w/ Grommet - Marker and Clearance Light - Round - Red

Part Number: OPT63KB
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$4.22
Retail:$4.47
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3/4" Marker and clearance light. Installs in a cutout with the built-in grommet. Has bullet connectors for a plug-in installation. Great Prices for the best trailer lights from Optronics. Optronics LED Trailer Light w/ Grommet - Marker and Clearance Light - Round - Red part number OPT63KB can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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  • Reviews (1756)
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Optronics Trailer Lights - OPT63KB

Highlights

  • Brighter, Longer-Lasting Light: Red LED with clear lens runs cooler and lasts longer than bulbs.
  • Quick Plug-In Setup: Male bullet connectors make hookup fast and simple.
  • Clean, Flush Finish: 3/4" recessed round body installs neatly with the built-in grommet.
  • Tough Polycarbonate Build: Durable housing and lens stand up to vibration and weather.
  • Road Legal: Meets DOT and FMVSS P2, P3, and PC requirements for compliance.
  • Ready for 12V Systems: Works seamlessly with standard 12V DC trailer wiring.

Features to know about

Brighter, Longer-Lasting Light: Efficient Red LED Output

This 3/4" round marker and clearance light uses a single red LED with a clear lens that’s more efficient and durable than incandescent bulbs. It puts out a bright, clean signal while drawing less power, helping your lighting system run smoother on a 12V DC setup. The solid-state LED design means no filaments to break and no bulbs to replace, so you get reliable illumination every time.

No-Hassle Mounting: Built-In Grommet for a Clean Fit

Tight space? No problem. This light is designed for recessed mounting and installs easily into a cutout with the built-in grommet. At only 15/16" thick, it tucks in neatly without sticking out or snagging on anything. The bullet connectors make wiring simple—just plug them into your trailer harness and you’re done.

Built Tough for Everyday Use: Durable Polycarbonate Housing

The housing and lens are made from tough polycarbonate that stands up to road debris, vibration, and weather exposure. That means fewer worries about cracks or leaks over time. This solid build helps keep the LED protected so it continues performing trip after trip without fading or failure.

Designed for Legal Compliance: DOT and FMVSS Certified

You won’t have to second-guess your setup. This light is DOT compliant and meets FMVSS P2 P3 PC requirements, so it checks all the boxes for marker and clearance functions. It’s ready to go on the road as part of a fully compliant lighting system.

Specs

Dimensions

  • Overall dimensions: 3/4" diameter x 15/16" thick

Electrical

  • Compatible with: 12V DC systems
  • Diodes: 1
  • Lead length: 12" long

MCL09RCK12JPG Optronics Clearance Lights - 3/4 Inch - Trailer Light - Circle - Red





Video of Optronics LED Trailer Light w/ Grommet - Marker and Clearance Light - Round - Red
Video Thumbnail Video Player Dialog

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for Review of Optronics Trailer Lights - Clearance Lights - OPT63KB

Hi, everyone. Steven here with etrailer.com. Today, we're looking at our Optronics LED trailer light with grommet. It's a marker and clearance light, round red color. Now folks, this is a round marker slash clearance light. It is a red LED, but the lens itself is a clear lens, and I wanna go ahead and go ahead and power this back up.

And let's go ahead and shut the overhead lights off, so we can take a look at this together. So a nice bright LED. Again, it's putting off a lot of output here very, very well, and even from far away, it lights up really good. Now, keep in mind you're getting quantity one. I just have that zoomed in on the one screen there, so you can see this a little better.

So I'll go ahead and zoom back out. Now, I'll show you it back in color. So let me go ahead and unplug this. And keep in mind, again, I just have this demo today. All you're getting is this light here.

You have the grommet included and a nice 12 inch length of wire for the pigtail, these two bullet style connectors. This is DOT compliant, and the overall diameter or dimensions are 3/4 of an inch over the front surface here and about 15, 16 inches deep or thick, depending on how you wanna call it. Now, again, polycarbonate housing and lens, so very nice, heavy duty. Not gonna break on you anytime soon. Well, folks, I think that will wrap it up for our quick look together at this Optronics LED trailer marker light with the grommet.

I'm Steven. Thanks for watching.

Customer Satisfaction Score:

Ratings & Reviews

4.8

1753 reviews
5 Stars
(1532)
4 Stars
(143)
3 Stars
(36)
2 Stars
(17)
1 Star
(25)
Review sort icon
3/4" Marker and clearance light. Installs in a cutout with the built-in grommet. Has bullet connectors for a plug-in installation.

by:

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.



by:

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.



by:

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.



by:

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



by:

Perfect. Exactly what I wanted and needed. Fast shipping. Great communication! Thank you.



by:

Best in class service…quick delivery and the right price.



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SuperFast Shipping



by:

Great service the exact replacement nee ded.



by:

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!



by:

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.



by:

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.



by:

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.



by:

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.



by:

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.



by:

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.



by:

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.



by:

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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work and look great will buy from etrailer again



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Exactly what I needed at a great price, excellent customer service and fast shipping.


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Info for this part was:

Employee Lindsey S
Edited by:
Lindsey S
Employee Jameson C
Expert Research:
Jameson C
Employee Steven C
Installed by:
Steven C
Employee Wilson B
Updated by:
Wilson B
Employee Amanda K
Written by:
Amanda K

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