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Optronics LED Trailer Clearance and Side Marker Light w/ Reflex Reflector - 6 Diodes - Amber Lens

Optronics LED Trailer Clearance and Side Marker Light w/ Reflex Reflector - 6 Diodes - Amber Lens

Item # MCL44AB
Our Price: $11.06
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Shipping Weight: 0.11 lbs
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4" x 1-1/2" Rectangle. LED trailer light functions as a clearance or side marker light. Built-in reflex reflector. Durable ABS housing. Surface mount - hardware not included. 2-Wire design. P2 rated. Great Prices for the best trailer lights from Optronics. Optronics LED Trailer Clearance and Side Marker Light w/ Reflex Reflector - 6 Diodes - Amber Lens part number MCL44AB can be ordered online at or call 1-800-940-8924 for expert service.
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Optronics Trailer Lights - MCL44AB

  • Clearance Lights
  • Rectangle
  • LED Light
  • Amber
  • 4L x 1-1/2W Inch
  • Surface Mount
  • Rear Clearance
  • Side Marker
  • Non-Submersible Lights
  • Optronics

4" x 1-1/2" Rectangle. LED trailer light functions as a clearance or side marker light. Built-in reflex reflector. Durable ABS housing. Surface mount - hardware not included. 2-Wire design. P2 rated.


  • Rectangular LED trailer light functions as both a clearance light and a side marker when properly mounted
  • Built-in reflex reflector removes the need for a separate reflector
  • 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
  • Amber lens over white LEDs
  • Durable ABS housing and acrylic lens
  • Compatible with 12V electrical systems
  • Surface mounts on trailer - hardware not included
  • 2-Wire design includes power lead and ground wire
  • P2 rated


  • Dimensions: 4" long x 1-1/2" tall x 15/16" thick
  • Distance between mounting holes (center on center): 3"
  • Diodes: 6
  • Power draw at 12.8V: 0.040 amps
  • LIfetime warranty on LEDs

Optronics MCL44 Series LED Side Marker Clearance Light Diagram

P2-Rated Lights

Diagram of light spread for P2 rated light

A P2-rated light produces a 45-degree angle of light to either side of its centerline for a total of 90 degrees of coverage. This beam pattern can be seen straight on, but it cannot be seen clearly from the side. So this type of light can be used as either a side marker light or a clearance light, but it cannot function as both. If you need both functions, then you must install 2 separate lights on your trailer - one as a front or rear clearance light and one as a side marker light.

MCL44AB Optronics Fleet Count LED Trailer Clearance and Side Marker Light w/ Reflex Reflector - 6 LEDs - 2-Wire - Amber Lens

Alternate part number: MCL-44AB

California residents: click here

Customer Satisfaction Score:

Customer Reviews

Optronics LED Trailer Clearance and Side Marker Light w/ Reflex Reflector - 6 Diodes - Amber Lens - MCL44AB

Average Customer Rating:  4.8 out of 5 stars   (221 Customer Reviews)

4" x 1-1/2" Rectangle. LED trailer light functions as a clearance or side marker light. Built-in reflex reflector. Durable ABS housing. Surface mount - hardware not included. 2-Wire design. P2 rated.


The cover almost fit perfectly.
built. Held up well to a harsh winter. A surprising find was that it keeps our fifth wheel dust free on the inside as well as the outside.
well worth the expense.


Very happy with the gentleman that took care of me and took his time


Lights are nice, but I wasn’t thrilled that 14 lights worth over $xxx were just thrown in a box loose & shipped!

Etrailer Expert

Sierra K.


Sorry to hear about this. Customer Service will contact you.


These led marker lights lined up perfectly for my motor home and are nice and bright. I would recommend not having the lens installed on the body when shipped. Taking apart the light per the video left mars from my screwdriver no matter how careful I was, they are extremely tight.


This is a perfect replacement for the globrite 118a/117r clearance light. Same size, same mounting holes, same look. 6 diodes. Easy install. Great service.


The order arrived complete. I installed the lights, everything fit perfectly and worked.


I bought this a year ago to replace a burnt out running board light from another company that no longer makes them. Still working great.



Its still working great after a year. I may be ordering more to replace the older leds which are starting to fail.


Looks just like the original



Working great. Just like the factory only cheaper.


etrailer is my go to place for trailer parts. They do everything right. This light works great and is just what I was expecting. There was one minor problem. This light was the updated LED version of the 8 year old lights that came on my trailer. The lenses were even interchangeable after 8 years.This version has no room for the wires behind the surface mounted light and require a hole through the trailer body exactly where the wires exit the back of the light. This required hole is in a different place than the old lights and required drilling a new hole in the trailer. No big deal, but having enough room to house the wire in the back of the light would be more user friendly.

David B.


I am facing the same issue on my 1983 Aljo Aly. If the backplate was molded to provide enough of a stand-off to accommodate a wire nut it would be perfect! Another option would be a rubber gasket thick enough to accomplish the same thing plus seal the back of the light.


Worked out well and has held up.


These lights from Optronics are an exact replacement for my enclosed car trailer and were an easy install. The lights are built well, illuminate brightly and priced right.
Very happy with these lights and Etrailer !!!!



The lights are still working very well, just as they were new !!


Still working great, have had no proble m.


Yolanda was very patient with my sketchy description of the lights I needed replaced bu was able to find great LED replacements that look and shine brightly. This is the site to start with when needing lighting for your projects,


I have been dealing with etrailer for many years now and have always been very satisfied with the products, pricing, service and fast delivery.


I brought this as a replacement for a good bride 126R/126Y on my drivers side run board. It's a great replacement. At a distance, you can't tell.

The light pattern is slightly different, but this light was a better deal than replacing 5 other lights. I happy with it



Still great


These are perfect replacements for the clearance lights on our RV trailer. They are bright, match to old footprint perfectly, and look even nicer. Every light works.

Brad B.


My comments still stand. I am happy with the purchases.


Exactly as ordered and arrived early.


Order was quickly processed and arrived in quality time. Part was as described and with little altering it worked to my expectations. I had to drill a small hole near the center of the light so it would lay flat against the fiberglass on my 40 foot 5th wheel. E-Trailer was the only site that I could find a light of that size to match the TMC GLO BRITE 126Y light on my RV. Only difference was the number and arrangement of diodes. Light replaced had 3 diodes in a line and MCL44AB has 6 arranged in the center of the light. Light works great but design needs to be altered so that wire can be directed towards the center.


Used these to replace the front marker lights on my Lance trailer. They are actually a perfect match for the lights that came on the trailer and were an easy install and much brighter. There is an extra hole in the base plate of the light that I drilled out and ran the wires through instead of their original hole which made it so I didn't have to drill a new hole in the trailer. As always fast shipping with etrailer.


The trailer marker lamps worked great. The trailer looks like a Christmas tree when it is running down the road. The best part was being able to run all the lights off one circuit. LEDs rule.


Received product in a timely manner which is great. Product as advertised on the computer and ordering from E-trailer was very simple and fast. The led marker lights fit in with my led taillights. 5 stars to e-trailer


We changed our 18' flatbed trailer over to LED lights and added these at the front corners so the trailer can be seen at night while turning corners. The LED's inside are amber colored and are pretty bright.


My husband and I refurbished an older aluminum trailer. We ordered practically everything from etrailer. The lights were quality and service is always great.


Led trailer lights fit perfect, easy to install and arrived in a couple of days.
Lights are clear and bright and have had no issues since installed.


Works great nice and bright

Show More Reviews

See what our Experts say about this Optronics Trailer Lights

  • Can Single Wire Clearance Light Be installed To Replace 2-Wire Light On Travel Trailer
    If a trailer clearance light like part # MCL44AB1 is used, the one wire is the power wire for the light and the light will be grounded through the mounting hardware. If you want to use the ground wire that you have on your trailer you can install part # MCL44AB. This has a 2-wire install, where one is for the power and the second wire is for the ground.
    view full answer...
  • How Do I Wire A 2 Wire Light In Place Of A Single Wire Light On My Camper?
    The lighting on your 1987 camper van used a single power wire input and would ground the lamp through the lights mounting bracket. This is how the Optronics LED Trailer Clearance and Side Marker Light # MCL44AB1 would connect. The Optronics LED Trailer Clearance and Side Marker Light # MCL44AB uses a 2 wire connection similar to the wiring on your new lights. You will attach the red power input wire on your new lights to the red wire on your camper van. The white wire will need to be...
    view full answer...
  • How Does Light with 1 Wire Ground
    When a single function light only has 1 wire, like the Thinline LED Trailer Clearance or Side Marker Light # MCL67AB, it means that it grounds through the mounting hardware. If the mounting location doesn't have a clean, bare-metal surface then you either need to clean it for a good ground connection or find an over head light that uses 2 wires for installation.
    view full answer...
  • Replacement for GloBrige 118A/117R Amber LED Clearance Light on a 2014 Big Sky Montana
    To replace the right clearance light on your 2014 Big Sky Montana I recommend going with the Amber Optronics # MCL44AB. This isn't a "direct" replacement as this is a 2 wire design, but we actually have a customer review on this product page saying that it is a perfect replacement for the GloBrite 118A/117R LED light that you referenced. I am not sure why your clearance light has 3 wires because a clearance light just carries 1 function. This means that you just need 2 wires; 1 for the...
    view full answer...
    Image 1 for Image 2 for
  • How to Install New Trailer Lights that Only Have One Wire
    A trailer light that only has 1 wire means that it grounds through its mounting hardware. The single wire is the power wire. The best surface to ground a light to is steel. If steel is not available in the area the light installs you can attach a ring terminal and wire to the grounding stud and attach the other end of the wire to the original ground wire from the old light.
    view full answer...
  • How to Install a Trailer Clearance Light with Different Color Wires
    There are typically only two wires on a clearance light which are for ground and power. There is not a standard wire color to function chart on a trailer for anyone to abide by so it will be best to test them for function with a circuit tester. In order to check this all you need to do is start the vehicle, plug the trailer connector in, and test which of the two wires has power. The light should then specify which wire is for which function but you will again need to test the trailer wiring...
    view full answer...
  • Trailer Lights Do Not Light Up But have Power on All Wires
    The problem you are experiencing sounds like a ground issue and/or short circuit. Ground problems normally show up when there is more draw on a system such as when you have the running lights on and then use another function like a turn signal or brake light but can show up any time. Make sure that the vehicle side and trailer side connectors are clean and free of corrosion inside and out. The main connector grounds should be attached to clean and corrosion free bare metal surfaces. The...
    view full answer...
  • How Does the Rectangular LED Trailer Clearance Light # MCL44AB Attach to a Trailer
    Yes, to install the Rectangular LED Trailer Clearance Light # MCL44AB you will need to remove the lens, screw the base to where you want it installed, and then put the lens back on. The mounting holes will end up being 3 inches apart on center.
    view full answer...
  • Troubleshooting Lighting on Vehicle that Has Power But Still Doesn't Power On
    If you have power to the bulb on your truck but it's not lighting up that would indicate the issue is the ground of the light assembly. I'd start by checking to see how the ground circuit is connected and make sure it's either connected to a clean metal surface that also touches the frame or is ran back to the negative post of the battery. You can also try connecting the light directly to a vehicle battery power and ground to see if it will work that way just to verify that the light is good.
    view full answer...
  • After Adding Side Marker Lights to Snowmobile Trailer, Some Work and Some Do Not Work
    Adding the additional lights might be overloading the trailer wiring on the vehicle side. Any given wiring set up is rated for a certain amount of amperage draw. If you try disconnecting the lights that do work and the other ones light up then you know this is probably the problem. There could also be an insufficient ground at the lights that are not working or at the main trailer connector since there is now more current running through the running light circuit. Since a test light ground...
    view full answer...
  • Troubleshooting Trailer Lamps That Receive Power But Won't Illuminate
    If you're showing power on the black wire feeding the lamp, and the bulbs are known to be good, the only thing that could cause the lamp not to illuminate is a poor ground connection. You can test this theory by getting a long length of wire and attaching one end to the negative battery terminal of the tow vehicle and touching the other end to the ground wire of the lamp while the running lights are turned on. If the lamp lights, you've confirmed that there's an interruption in the ground...
    view full answer...
  • Wire Color Functions of Optronics Clearance Light # MCL44AB
    On the Optronics clearance light part # MCL44AB the black wire is the power wire and the white wire is the ground. S you would need to wire that accordingly to what you have on your trailer. You can ground the white wire to the frame of the trailer or you can run it to a ground wire.
    view full answer...
  • Troubleshooting Trailer Turn Signal on One Side of Trailer Not Activating
    You need to improve the ground on the light assembly that isn't lighting up. It's getting power but when the higher amperage draw is present on it for the turn signal/brake light circuit an insufficient ground is preventing the light from activating. One way to do this is to clean the mounting hardware of the light assembly if it grounds through the hardware or if it uses a wire you can run an additional ground wire from the light to the main ground of the trailer wiring. For more info...
    view full answer...
  • Replacement for Glo-Brite 118A Trailer Light
    From what I can find the 118A light is an amber light that measures 4 inches long by 1-1/2 inches wide. The light we have with these specs is part # MCL44AB but it's only a 2 wire light. We don't carry Glo-Brite products so I don't have any specific contact numbers to relay for you, but this light should work just fine.
    view full answer...
  • Power Getting to Trailer Tail Light with a Good Bulb but the Bulb Does Not Light
    If power is getting all the way to the light and the bulb is good but will not come on that indicates to me that the circuit is not being completed. This would mean the ground is the problem. You can test this pretty easily by attaching the ground from the affected light directly to a negative battery terminal. The light should come on. The lights should be grounded independently and as close to where they are mounted. There should be no corrosion, paint or dirt on the ground location....
    view full answer...
  • How To Replace a Trailer Clearance Light With One Wire Using a Light With Two Wires
    If you are replacing a trailer marker/clearance light that only has one wire with a trailer marker/clearance light that has two wires like the part # MCL44AB that means the previous light grounded though the mounting hardware and the new light grounds with a single ground wire. Therefore, the ground wire will just need to be run and attached to the trailer frame. That said, I don't know which color has which function on your light so you will just need to test these for yourself if the...
    view full answer...
  • How do LED Sidemarker Lights Wire in to Trailer Light Wiring
    When installing a sidemarker light such as this Optronics Trailer Light # MCL44AB you will want to splice into the signal wire for your trailer running lights circuit and then run the ground wire to a clean metal surface. The black wire will be the power wire and the white wire is the ground wire. I attached an FAQ on trailer wiring for you to check out also. I also attached a review video for this product for you to check out. This video shows how the light gets wired and looks when light up.
    view full answer...
  • Can LED Side Marker Lights # MCL44AB and # MCL44RB be Used on a Class C RV and be Bright Enough
    Yes, you can use LED clearance lights # MCL44AB and # MCL44RB on your Class C RV. The LED lights will be as bright if not brighter than comparable incandescent lights. I have linked video reviews on both lights for you.
    view full answer...
  • Availability of Red Version of the Amber Clearance Light # MCL44AB
    Yes, the red version of the # MCL44AB is the part # MCL44RB.
    view full answer...
  • Will Optronics Replacement Amber Lens Fit Glo-Brite 118A Amber Trailer Light
    I spoke with my contact at Optronics to see if the lens for their Rectangular LED Trailer Clearance, Side Marker Light with Reflector # MCL44AB will work for the Glo-Brite 118A amber trailer light. She confirmed that the # A44AB lens will work on the Glo-Brite 118A. The # A44AB lens installs by snapping on to the light housing, and the lens measures 4 inches wide x 1-1/2 inches tall.
    view full answer...
  • Replacement Lens For Rectangular LED Trailer Side Marker Light with Reflector MCL44AB
    The replacement amber lens for your # MCL44AB light is part # A44AB. This lens measures 4-inches long and 1-1/2 inches wide and will fit all MC44 and BA44 series lights.
    view full answer...
  • Replacement Amber Light For Brite Glo 118A/117R
    For the same size light, we have the Rectangular Trailer Clearance, Side Marker Light with Reflector, 2 Wire - Amber # MC44AB or the LED version with 6 diodes # MCL44AB. These will both be 4 inches long by 1-1/2 inches wide with 3 inch on center mounting holes.
    view full answer...
  • Availability of Incandescent Version of Optronics # MCL44AB1 LED Trailer Clearance/Side Marker Lamp
    The incandescent version of the # MCL44AB1 lamp you mentioned is part # MC44AB. The lamp measures 4 by 1-1/2 inches and mounts on 3 inch centers. The lamp is a two wire design, one wire for power, the other for ground. This differs a bit from the LED version that grounds through its mounting hardware.
    view full answer...
  • Replacement for 552414 4 x 1-1/2 Inch Trailer Clearance Lamp
    I was able to find one reference to an out of stock 552414 marker lamp online, but wasn't able to determine the manufacturer name. From what I saw, the # MCL44AB (for LED) or # MC44AB (for incandescent) from Optronics is very similar if not identical to the lamp you're wanting to replace. The lamp measures 4 x 1-1/2 inches with mounting holes 3 inches apart on center. I've linked to a product description video for the # MCL44AB Clearance Lamp.
    view full answer...

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Info for this part was:

Employee Mike L
Expert Research:
Mike L
Employee Patrick B
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Patrick B
Employee Michael H
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Michael H
Employee Jameson C
Expert Research:
Jameson C
Employee Adam R
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Adam R
Employee Jacob T
Video Edited:
Jacob T
Employee Chris R
Video Edited:
Chris R
Employee Kathleen M
Installed by:
Kathleen M
Employee Conner L
Installed by:
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Employee Bradley B
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Employee Laura H
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