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Optronics LED Trailer Clearance or Side Marker Light w/ Reflex Reflector - 6 Diodes - Red Lens
Optronics

Optronics LED Trailer Clearance or Side Marker Light w/ Reflex Reflector - 6 Diodes - Red Lens

Part Number: MCL44RB
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$6.35
Retail:$20.41
You Save: 69%
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4" x 1-1/2" Rectangle. Waterproof, LED trailer light serves as either a clearance or side marker light. Built-in reflex reflector. Durable ABS housing. Surface mount to trailer - hardware not included. 2-Wire design. P2 rated. Great Prices for the best trailer lights from Optronics. Optronics LED Trailer Clearance or Side Marker Light w/ Reflex Reflector - 6 Diodes - Red Lens part number MCL44RB can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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Optronics Trailer Lights - MCL44RB

Highlights

  • One Light, Two Jobs: Works as a clearance or side marker light so you cover both needs.
  • Clear Visibility With Less Power: Six LEDs give bright, efficient light using only 0.040 amps at 12.8V.
  • No Separate Reflector Needed: Built-in reflex reflector saves space and keeps your trailer compliant.
  • Reliable When Wet: Sonically sealed waterproof housing keeps water from reaching the diodes.
  • Simple 2-Wire Hookup: Power lead and ground wire make connection quick and straightforward.
  • Compact Fit: 4" x 1-1/2" size with 3" mounting holes centers fits common trailer setups.

Features to know about

Brighter, Longer-Lasting, and Efficient: 6-Diode LED Design

This rectangular LED trailer light uses six red LEDs that shine bright while drawing very little power—only 0.040 amps at 12.8V. The LEDs last up to 50 times longer than incandescent bulbs and never need replacing. That means no fragile filaments or dimming over time, just reliable visibility every time you hook up.

Simplified Setup: 2-Wire Surface Mount Design

Installation is simple with the 2-wire hookup—one power lead and one ground wire. The light mounts directly on the surface using two screws spaced 3" apart on center, so there’s no need for a separate bracket or plate. At 4" long, 1-1/2" tall, and only 15/16" deep, it fits neatly wherever you need a clearance or side marker light.

Durable and Sealed for the Road

Built with a red acrylic lens and a tough ABS housing, this light is designed to handle exposure to the elements. The lens and housing are sonically sealed into a single waterproof unit that keeps out moisture and protects the internal circuit board and diodes from damage.

No Separate Reflector Required: Built-In Reflex Reflector

The built-in reflex reflector removes the need for an additional reflector on your trailer. It provides extra visibility even when the light isn’t on, keeping your setup compliant and easy to maintain without adding extra parts.

Compliant Illumination: P2 Rated for DOT Standards

This DOT-compliant P2-rated light produces a focused 90-degree beam pattern—45 degrees to each side of centerline—making it ideal as either a clearance or side marker light when properly mounted. You get dependable performance that meets lighting standards for safety on the road.

Specs

Dimensions

  • Overall dimensions: 4" long x 1-1/2" tall x 15/16" deep
  • Distance between mounting holes (center on center): 3" apart on center

Dimensional diagram of Optronics MCL44RB LED red rectangular trailer clearance and side marker light showing measurements and mounting hole spacing

Electrical

  • Voltage: 12.8V
  • Power draw at 12.8V: 0.040 amps
  • Diodes: 6

Warranty

  • Lifetime warranty: on LEDs

MCL44RB Optronics LED Trailer Clearance or Side Marker Light w/ Reflex Reflector - 6 Diodes - Rectangle - Red Lens - P2 Rated

Alternate part number: MCL-44RB





Customer Satisfaction Score:

Ratings & Reviews

4.8

4489 reviews
5 Stars
(3855)
4 Stars
(446)
3 Stars
(83)
2 Stars
(36)
1 Star
(69)
Review sort icon
4" x 1-1/2" Rectangle. Waterproof, LED trailer light serves as either a clearance or side marker light. Built-in reflex reflector. Durable ABS housing. Surface mount to trailer - hardware not included. 2-Wire design. P2 rated.

by:

I ordered two of these LED lights to add to my trailer and they worked so good I just placed an order for more of these for my other trailer. E trailer has quick shipping and great prices



by:

This led light is a perfect side marker light for my trailer. Plenty bright and durable



by:

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.



by:

The LED side marker light worked perfect! Delivery was on time. Will order more to replace the old style bulb side lights on my RV.



by:

I bought several of these to replace lights on a camping trailer that had ceased to work. I replaced the lights and they continue to work well. I am satisfied with the purchase and the results.



by:

Once again etrailer comes through! I needed a replacement clearance light for my Camplite TT and after scouring the web for my specific application, with no luck, the manufacturer told me to call etrailer. It had been awhile since I ordered from them, but after talking with their sales rep Sal, I was reminded of why their reputation for customer service and application expertise is so well established. Many thanks etrailer and Sal!



by:

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



by:

LED running lights look and work much better than the original ones that came with our Casita travel trailer. Sealing external fixtures with 5200 sealant works and looks much better than silicone sealant and holds up well in all weather conditions.



by:

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.



by:

Product was exactly what I needed to replace my one year old clearance light on my travel trailer.

I've also purchased 2 electronic brake controllers and tech support told me exactly what harness I need each time.

I give 5 stars to Etrailer for everything I've purchased!



by:

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.



by:

Easy to mount and work great!



by:

I selected the lights I did because they were LED, they were a size that matched the size of the red reflectors, and because of how bright they are. The LED trailer lights selected were used on the rear bumper of a G3500 Chev Express van where GM had placed red reflectors - above and toward the ends of the license plate. I wanted lights down low in addition to the factory tail lights which are high up the sides. The lights are great. I purchased extra lights in case someone kicks one of them and breaks the red plastic lens, or, to have a set for a new Chev van.



by:

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. profile picture

Brad B.

2/5/2018

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



by:

I replaced two failed incandescent marker lights on my RV with these LED units one year ago and they are working very well. They were a direct replacement and needed no modifications. Like all LEDS, they are best seen when looking directly at them (90º) so be sure to choose your mounting location carefully.

Chas profile picture

Chas

9/28/2018

The lights are working perfectly. I mounted them on a Lance truck camper to replace the faulty factory units. Thanks for inquiring.



by:

I needed "clearance lights" for my six year old trailer. Looked all over Dallas and could not find an exact match for my 6 year old travel trailer. But then I found "etrailer.com" and an exact match at an excellent price!! Ordered the lights with three day shipping and the lights arrived on the second day!!! Exceeded expectations in every respect. Etrailer.com is AWSOME!!!! Thank you!!!!!

Larry M. profile picture

Larry M.

2/4/2018

No change. You guys are GREAT!!!!



by:

These lights were a match for the one that I broke.This is a wonderful company to work with.I have a 2025 grand design 23 lde xls.I loved the tracking info.You couldn't have ship them any faster..Thank you ,Will order again.



by:

Just a replacement for a broken light. It’s fixed now, what more can I say. You light up my life!



by:

Great match to the old ones!



by:

Good replacement for the clearance lights on my Itasca Meridian RV.



by:

Perfect replacement for globrite 118a/117r. Same size, fit,mounting holes. Great service. 6 diodes.



by:

This used to be a 16 foot travel trailer. I stripped it down to the frame
and built it into a utility trailer using all lights and wiring from your
folks. Love to you use you as I get quick turn around on orders and good quality merchandise. Thank you.



by:

I ordered a side marker light 6 diodes, the only thing that came in the package is a side marker light lens.



by:

Show the back of the lamp in the sales pitch so people can see what they have to deal with when mounting them. Wire pinching. Same with the ambers. No gasket to seal the mounting area.



by:

Swapped out original incandescent version with led version. Perfect direct replacement. Fast fulfillment. Just great all around.


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See what our Experts say about this Optronics Trailer Lights

  • LED Replacement Trailer Lights For TMC Glo Brite 118a/117r
    We have the Optronics LED Trailer Clearance or Side Marker Lights in Red # MCL44RB and Amber # MCL44AB which will replace your TMC Glo Brite 118a/117r trailer lights.
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  • Replacement Marker and Clearance Lights For Globrite 118A/117R On a 2004 Haulmark Trailer
    You are going to have to replace your running lights on your 200 Haulmark Trailer as I do not see that there are any replacement lenses available for your Globrite 118A/117R clearance/marker lights. The Optronics Trailer Clearance or Side Marker Light w/ Reflex Reflector Red # MC44RB and Amber # MC44AB appear to be the same size as the Globrite lights. These are 4" long X 1-1/2" wide. We do carry the Replacement Bulb # A194B, Red Lens # A44RB and Amber Lens # A44AB for these lights...
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    The Optronics Clearance or Side Marker Trailer Light # MC68AB and # MC68AB are the same size as the Grote 9015 lights. Unfortunately they are not available from the manufacturer with a LED light. You can change the incandescent bulb to an LED Bulb # DI88VR. This will give you the lower power draw as well as the extended life that you get from LED's. The Glow Brite LED replacements are going to be the Optronics LED Trailer Clearance and Side Marker Light w/ Reflex Reflector # MCL44AB and...
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  • Replacement Clearance Lights and SAE Codes On Light Lenses
    The SAE codes on the lens of a light indicate what function(s) that light can perform. Many trailer lights are designed to do more than one function. Based on the SAE codes on the first light, it performs the following functions: A - Rear reflector and P2 - Rear side marker light. I've attached an article with more lighting requirements and information to assist. The best way to determine what you need is actually based on the measurements of your lights. I've linked the page to all...
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  • 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...
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    Image 1 for Image 2 for
  • Trailer Wiring for a Motorcycle Towing a Motorcycle Trailer
    Normally, the 5-wire flat connector will accept a 4-wire flat connector and work properly. The extra circuit on the 5-wire connector is normally wired to power a reverse lockout or electric trailer brakes not the brake lights. If your motorcycle has the brake light circuit connected to the extra circuit you will need to do some re wiring or install a converter, item # 119178KIT, on the motorcycle. Your trailer should be wired as follows. White wire = ground, brown = taillight, yellow =...
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  • 2-Wire Red Clearance Light That is 4 Inches Long
    For a light that is similar to the Optronics MC44RB1 but has a 2-wire design you will need the following: - Optronics LED Trailer Clearance or Side Marker Light w/ Reflex Reflector - 6 Diodes - Red Lens # MCL44RB This is the same light, with exactly the same dimensions and mounting hole spacing as the MC44RB1, with the only differences being that this is an LED light instead of incandescent, and that it is a 2-wire light so it's exactly what you're looking for.
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  • Replacement Red Lens for Trailer Clearance Light with SAE P 2A 01 On the Lens
    The numbers on the lens indicate how the light is rated. LED clearance light # MCL44RB does have the same numbers on the lens meaning it carries the same rating. It is likely going to work for you but to be sure take a look at the measurements and compare them to your existing light to make sure they are compatible. Light # MCL44RB is 4 inches long, 1-1/2 inches wide, and 15/15 inches deep. I have linked a video review of this light for you. If you just want the lens then it is # A44RB.
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    We do have replacement lights for the Glo Bright 118A and 117R lights you have on your Winnebago Itasca. If the lights you have use incandescent bulbs, the replacement light you need for the amber light 118A, is part # MC44AB. This light measures 4 inches long and 1-1/2 inches wide and is 15/16 inches tall, and the mounting holes are spaced 3 inches center to center. The replacement bulb for this light is part # A194B. For the 117R light replacement is part # MC44RB. It has the same...
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  • Recommendation for Sealed Clearance Lights to Replace Corroded Assemblies on Trailer
    To replace your existing Optronics # MCL44RB and # MCL44AB1 Clearance Lights with sealed alternatives, I recommend taking a look at the Optronics Sealed LED Trailer Clearance Light - Amber # MCL49AB and Red # MCL49RB. These feature a bit of a different shape than the standard rectangle of your existing assemblies, but they do have very similar dimensions, along with the same 3 inch mounting hole measurement. The lights themselves measure 3-7/8 inches long, 2 inches wide, and 1 inch deep....
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    Image 1 for Image 2 for
  • Replacement Housings For The GloLight 118a And 117r Trailer Clearance Lights
    We have both the replacement lens and assemblies for the GloLight 118a and GloLight 117r trailer clearance lights. They are available in both an incandescent part # MC44AB and an LED part # MCL44AB1 bulb for the amber lights. For the red lights, you will need part # MC44RB for the incandescent bulbs and part # MCL44RB for the LED version. The replacement lens assemblies for the amber housings is part # A44AB whereas the replacement lens for the red housings is part # A44RB.
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  • Mounting Method for Optronics Rectangular LED Trailer Clearance Side Marker Light MCL44RB
    The Optronics Rectangular LED Trailer Clearance, Side Marker Light # MCL44RB does not require a mounting plate or bracket since its white mounting base has two holes for screw-mounting to your trailer. Please see the linked image. These mounting holes are spaced at 3-inches on center.
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  • How to Wire Up an Adapter to Tow Trailer for Motorcycle that has a 5-Way
    Normally, the 5 wire flat connector will accept a 4 wire flat connector and work properly. The extra circuit on the 5 wire connector is normally wired to power a reverse lockout or electric trailer brakes not the brake lights. If your motorcycle has the brake light circuit connected to the extra circuit you will need to do some re wiring or install a converter, item # 119178KIT, on the motorcycle. Your trailer should be wired as follows. White wire = ground, brown = tail light, yellow...
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  • Dimensions of the Rectangular LED Trailer Clearance Light part # MCL44RB
    The dimensions of the Rectangular LED Trailer Clearance, Side Marker Light with Reflector part # MCL44RB are 4 inches of length by 1-1/2 inches of width and a depth of 15/16 of an inch. The mounting holes are 3 inches apart when measured on bolt hole center. I attached a review video for this product for you to check out also.
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    The Sealed, Rectangular LED Trailer Clearance and Side Marker Light, 14 Diodes - Amber, # MCL49AB, is also available in red as # MCL49RB. We do have several red marker lights as well that are close in size and shape. Take a look at Rectangular LED Trailer Clearance, Side Marker Light with Reflector, 2 Wire, 6 Diode - Red, # MCL44RB and # MCL44RB1. These lights are 4 inches wide by 15/16 inches deep by 1-1/2 inches tall. If you need a specific replacement, look for a serial or model number...
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  • 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.
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  • Can Clearance Lights be Added to Fulton Trailer Fenders # F008573
    While the Fulton trailer fender part # F008573 doesn't have cut outs or provisions for clearance lights you could surface mount some like you mentioned. Like with the amber Optronics light part # MCL44AB and red # MCL44RB.
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  • Can Wiring be Rerouted Through a Hole Drilled in the Center of Optronics LED
    There is room inside the Optronics LED # MCL44RB to reroute the wires but not through the center divot like you're thinking. The circuit board with the diodes is right there and it's glued to the inside of the back housing. The hole you drill has to be outside of the box I've drawn on the back of the light. That box is basically where the circuit board is. With that being said, I don't remember drilling and moving the wires at all. The housing isn't designed to be modified and therefore...
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  • Availability of Red Version of the Amber Clearance Light # MCL44AB
    Yes, the red version of the # MCL44AB is the part # MCL44RB.
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  • Availability of a Trailer Side Marker/Clearance Light that Works on a 12 to 48 Volt System
    The Optronics trailer clearance/side marker light # MCL44RB, is designed to work on a 12 volt system and could incur damage if used on a higher rated system. A similar light, # MCL66R24B, is designed to work on a 24 volt system. None of the lights we currently have are rated behind 24 volts.
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Do you have a question about this Trailer Light?


Info for this part was:

Employee Patrick B
Video Edited:
Patrick B
Employee Jacob T
Video Edited:
Jacob T
Employee Michael H
Expert Research:
Michael H
Employee Jameson C
Expert Research:
Jameson C
Employee Adam R
Expert Research:
Adam R
Employee Laura H
Updated by:
Laura H
Employee Wilson B
Updated by:
Wilson B
Employee Brian T
Updated by:
Brian T
Employee Cole B
Installed by:
Cole B

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