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

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

Item # MCL31RB
Retail:$15.53
Our Price: $7.89
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Trailer Lights
Shipping Weight: 0.11 lbs
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4" x 2-1/6" Oval. LED trailer light functions as a clearance or side marker light when properly mounted. 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 Clearance or Side Marker Light w/ Reflex Reflector - 6 Diodes - Oval - Red Lens part number MCL31RB can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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  • Reviews (172)
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Optronics Trailer Lights - MCL31RB

  • Clearance Lights
  • Oval
  • LED Light
  • Red
  • 4L x 2-1/16W Inch
  • Surface Mount
  • Rear Clearance
  • Side Marker
  • Non-Submersible Lights
  • Optronics

4" x 2-1/6" Oval. LED trailer light functions as a clearance or side marker light when properly mounted. Built-in reflex reflector. Durable ABS housing. Surface mount - hardware not included. 2-Wire design. P2 rated.


Features:

  • LED trailer light functions as a clearance light or side marker light 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
  • Durable ABS housing and acrylic lens
  • Red lens over white LEDs
  • Compatible with 12V DC systems
  • Surface mount to trailer - hardware not included
  • 2-Wire design includes power lead and ground wire
  • DOT compliant
  • P2 rated


Specs:

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


Optronics MCL31 Series Red LED Side Marker and Clearance Light with Reflex 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.



MCL31RB Optronics LED Clearance or Side Marker Trailer Light w/ Reflex Reflector - 6 Diodes - Oval - Red Lens - P2 Rated

Alternate part number: MCL-31RB




California residents: click here


Customer Satisfaction Score:


Customer Reviews

Optronics LED Clearance or Side Marker Light w/ Reflex Reflector - 6 Diodes - Oval - Red Lens - MCL31RB

Average Customer Rating:  4.8 out of 5 stars   (172 Customer Reviews)

4" x 2-1/6" Oval. LED trailer light functions as a clearance or side marker light when properly mounted. Built-in reflex reflector. Durable ABS housing. Surface mount - hardware not included. 2-Wire design. P2 rated.

by:

I replaced a red LED marker light on my RV a year ago. The original leaked water and failed after about 4 years. It was easy to swap out. It is still dry inside and functions fine.

Timothy B.

11/18/2023

2-year update: The LED marker light is still dry and continues to function fine. I will definitely buy it again if needed for another location on my RV.



by:

Not exactly the light i am trying to ma tch

Etrailer Expert

Katrina B.

5/10/2023

Well lets get you over to our customer service department for them to help you get the correct light.



by:

Work great on my motorhome.



by:

Easy install and bright marker light. I also used two on the top back side of my horse trailer as an extra turn signal and brake light. My existing turn signal and brake lights were really low on the trailer and these helped it become more visible when I was slowing down or turning.



by:

I used this side marker to replace existing Bargman 99 series lights on a camping trailer. The Optronics LED model was not quite as bright as I would expect for a 6 diode unit, but still an improvement over the incandescent model. It is larger in size than the Bargman 99 series, so it covers up any surface imperfections on the trailer.



by:

These lights were used to replace the incandescent versions and they worked great.



by:

Look great don’t tho k they will work on boat trailer not water proof



by:

A good light, but there are issues.The LED's emit a yellow light, not white. While the lens is red, it gives the light is almost an umber color and not quite as intense. The potential for a discussion on the color when lit is there. The mounting holes are positioned too close to the center LED compartment to accept hex hex head tapping screws. It's do able but difficult. The light itself is well made with all components includind the 20 guage aluminum wire encased in resin.

John G.

10/23/2013

It turns out that the lens had been switched on the light base. The proper base has red LEDs not yellow with a red lens. When paired properly, a bright red light is emitted.



by:

Great job, right part, delivered on tim e.



by:

Great product fast shipping. with the two wires I could mount them on fiberglass with no worries.
Thanks e trailer, great job. lights work great and are very bright...

Jim B.

5/14/2014

Lights are great, super bright and no corrosion issues. Exactly as described, great price and great service and shipping.



by:

These lights are just what was needed to replace old incandescent lights on a small camping trailer pulled behind a motorcycle. These are bright so as to be seen better by others because motorcycles are sometimes more difficult to see compared to larger vehicles and the LED lights are easer on the motorcycles electrical system. Shipping was prompted, the product is as described by etrailer and arrived in good condition.



by:

These are good but I was hoping for more space on the back side to bring the wires through the pre-existing hole in my trailer.



by:

LED lights are the way to go. The reflective marker lights are great for times when the lights aren't on yet headlights will reflect off them letting the driver know there is something there. The only thing would be better on these lights would be a better ground.



by:

Installed in old light position without a problem. One issue - polarity was not an issue with the old lights but is an issue with the LED'S.

Bob K.

5/28/2018

Working great



by:

I ordered some of these previously after a few years of fighting with incandescent bulbs in the trailer marker lights. These LED units are much brighter and will last many times longer than the incandescent units. In my initial order, I had somehow managed to miscount how many I needed, so this order is to replace the last few of the old style markers & bulbs still remaining.



by:

Lights work great, very bright. Easy wire connect and mounting was a breeze.

Cheryl

7/24/2021

These lights are great. Easy to install and bright.



by:

These lights are an excellent upgrade for my pop-up camper. I highly recommend them over incandescents for replacement of old faded marker lights.



by:

Exact fit! Makes a big difference to a trailer with some age on it. I would highly recommend making the change to the LED lights, the current draw is a lot less and these lamps are bright and clear.



by:

Easy to install. Great replacement option for my old lights on my camper. I was surprised that the LED bulbs are red along with the lens.



by:

Rewired my stock trailer and replaced all the lights with LED. Works and looks great!



by:

I installed the lights at full sun. And they are still bright.

Keith H.

7/12/2018

One later and lights still look new and are super bright



by:

Good upgrade over conventional incandescentI looked to upgrade to LED marker lights on a travel trailer after experiencing corrosion issues in the sockets of traditional incandescent marker lights. These LED lights are a good upgrade over the OEM lighs.



by:

Good clearance light. Gives off plenty of light at night and in low light situations. etrailer.com has great customer service and will take care of you.



by:

These are good lights with pretty secure covers. They work great and bolt up exactly where the old ones did. The only issue I saw was that the wires can easily get pinched when mounting these on a surface with a center hole. These seem to be designed for the wires to be routed out of the side or bottom of the light, not the back. No biggie though.



by:

LED's are much brighter than the incandescent lights. Service was outstanding from eTrailer. Expedited shipping at no extra charge, I got my lights in 3 days (in SW Florida)


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Show More Reviews

See what our Experts say about this Optronics Trailer Lights

  • Can Additional Turn Signals Be Installed on the Sides of a Trailer
    As far as turn signals go; that we are aware of there are no restrictions that would prevent you from installing an additional blinker on the side of your trailer in red or amber. You would need to consult your local DOT for more info, but I would be surprised if there were restrictions that would prevent that. Especially since semi-truck trailers often have them. The easiest way to do this would be to use red lights since you could simply tap into the stop/turn circuit on either side...
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  • LED Lights Won't Work With Incandescent Clearance Marker Lights
    The issue is the different power draws from LED and incandescent lights; it can cause the LED light not to work as the voltage difference between the two hampers the connectivity. To remedy this you will need to install all LED marker or clearance lights. I couldn't find your order to determine the LED you purchased from us initially, so you will need to choose from the size you need like the 4" long x 2-1/16" tall Red Optronics LED Clearance or Side Marker Light # MCL31RB or the 2-1/2"...
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  • Recommended Inexpensive Backup Camera for Trailer with Mobile App
    The best inexpensive wireless backup camera we offer that uses your mobile device as the monitor is the VueSMART RV and Trailer Backup Camera part # HM34FR. This unit will mount to a clearance light usually found at the top of the trailer on the outside like the Optronics LED Clearance or Side Marker Light part # MCL31RB. If you don't have one you would just install your own and run power up from the tail lights. This makes for a pretty easy install and then all you'd do is pair the camera...
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  • Sealing Up Gaps between Trailer Lights and Trailer Body
    What you can do is get some foam from a craft store and make a gasket for each of the lights # MCL31AB and # MCL31RB. Or you can use silicon sealant such as # 0160297 or gasket maker such as # LT37464.
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  • Replacement Red Clearance Light for 2012 Keystone Fuzion 5th Wheel Toy Hauler
    I reviewed photos of your 2012 Keystone Fuzion 5th Wheel toy hauler (one is linked) and based on those it looks like the red side light you need is Optronics Trailer Clearance or Side Marker LED Light # MCL32RB which measures 4 x 2 x 1-inch and which mounts on 3-inch centers. Other similar lights include LED model # MCL31RB and incandescent model # MC32RB. Trailer makers do not maintain specs for smaller items like lights so just check your overall light size and mounting hole spacing...
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  • Availability of 2 inch x 4 inch Amber and Red 6 Diode LED Clearance Lights for Trailer
    We have just the lights that you are looking for! Optronics has their Oval LED Trailer Clearance, Side Marker Light with Reflector, 6 Diode in both Amber # MCL31AB and Red # MCL31RB. These lights are 6 diode LED clearance lights that measure 2-1/16 inches by 4 inches. They do come with 2 wires but one of them is a ground that you will attached to a bare metal surface on your trailer. The other wire will be connected to the appropriate wiring on your trailer that your old lights were hooked...
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  • Availability of a Oval Trailer Clearance Light with a Black Base
    The closest thing we have to a version of the Oval LED Trailer Clearance, Side Marker Light # MCL31RB that you referenced with a black base in an amber and red lens would be the Red Oblong Trailer Clearance, Side Marker Light # MC31RB and the Amber Oblong Trailer Clearance, Side Marker Light # MC31AB. Both these lights have black bases, but they have incandescent bulbs instead of LEDs.
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  • Replacement Red and Amber Lens for Clearance Light MCL31RB
    Yes, the replacement lens you would want for your # MCL31RB is the part # A31RB. And the amber version is part # A31AB.
    view full answer...
  • Replacement For A SAE-A-P2-72 Trailer Light
    We do offer the Optronics trailer light # MC32RB for red and # MC32AB for amber. These lights will be extremely similar to the # MCL31RB that you mentioned, but they are a bit more square on the ends. The mounting holes on the # MC32RB are 3" apart on center which should be fairly standard. This # MC32AB and # MC32RB appear to be what you are looking for.
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  • Replacement Red Clearance Light LED 4 x 2 Inches
    For your replacement clearance light, I recommend the Oval LED Trailer Clearance, Side Marker Light with Reflector, 6 Diode - Red # MCL31RB. This light is 4 inches by 2 inches and mounts on 3 inch centers as you requested. I've attached a couple videos of this light to assist.
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  • Replacement Clearance Lights for 2003 Foretravel U320
    Finding replacement clearance lights for your 2003 Foretravel U320 will require more information. The SAE number you provided only means they passed SAE guidelines. You may be able to find a model number on the actual housing, or you can measure and send some close up pictures. Looking at pictures I was able to find online, the amber looks like the style of the # MC32AB you were looking at. The LED equivalent would be the # MCL32AB for amber and # MCL31RB for red. The red lights from...
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  • Comparing Optronics Aero Pro and Glolight Trailer Tail Lights
    There would be a noticeable difference if you had both the Aero Pro light # STL37RB and the Glolight, # STL117RB right next to each other. You would notice that the Glolight seams to actually sort of glow rather than just light up. This is due to the top and bottom bars that light up solid. Both lights are going to be plenty bright. Light # STL37RB has 23 diodes which will be very bright as you can see in the picture submitted by reviewer Becky P. She is using tail lights # STL37RB and...
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  • Most Popular Replacement Clearance/Marker Lights for an Old Travel Trailer
    The most popular clearance/marker lights we offer are the Optronics Clearance or Side Marker Lights w/ Reflex Reflector. These are offered in both incandescent part # MC38AB for amber or part # MC38RB for red and LED part # MCL31AB for amber or part # MCL31RB for red. They have a two wire design so they are super easy to install. The white wire gets grounded and then the back wire goes to the running light circuit with butt connectors part # DW05744-5. If you need screws to attach the light...
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  • Color Availability of the Optronics Oval LED Trailer Clearance Lights
    Yes we sure do. In order to get the Oval LED Trailer Clearance Light in red you would want to use part # MCL31RB.
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  • Replacement Red Trailer Marker Light for 2013 Trailer Star Boat Trailer
    I was not able to find specs for the marker lights supplied on your Trailer Star boat trailer but I was able to find several photos that show the red oval grommet-mount lights you refer to. There may be a part reference number on the back of the light housing; often this is printed rather than molded into the part. If you can find a part number you can search our site using that, but if its not available you can take a measurement of the actual opening (not the grommet, but the opening...
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  • LED Replacements for Optronics Rectangular Trailer Clearance Lamp MC32RB
    We do not have an exact LED replacement for the incandescent side marker lamp you mentioned, part # MC32RB, but we have an alternative that is very close. Part # MCL31RB (red lens) and part # MCL31AB (amber lens) are shaped a bit differently than the lamp you referenced. They are also about an 1/8 of an inch wider and thinner in depth. The important dimension, the distance between the mounting holes, is still three inches, so you will be able to use the existing holes. If you click on...
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  • Installing Side Trailer Lights to Function as Turn Signals
    You can certainly install some additional lights on the side of your trailer to function as another turn signal. You can use a red LED light like the Optronics Oval # MCL31RB for this purpose and simply tap into the stop/turn circuit on either side of the trailer. Keep in mind that if your trailer has combined brake and turn signals (which most do), the lights will activate when the brakes are applied as well. If you want to separate the functions out so that they only illuminate with...
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  • Clearance Light Replacement for Glo Brite 122-Y Lights on Trailer
    I have a solution I can provide for you but we do not carry the replacement lens you are looking for. The clearance light part # MCL31AB and # MCL31RB are very close in shape and dimension to the lights you are looking for. They are both 4 inches wide by 2 inches tall. The # MCL31AB is amber in color and the part # MCL31RB is red in color.
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  • Is a Deeper Lens Available for the Optronics MC32 Series Clearance Light to Install LEDs
    We do not have a deeper lens for the Optronics MC32 series clearance lights, however we do have similar LED clearance lights that you may be interested in. Check out the Optronics LED Clearance Light, # MCL45RB or # MCL31RB. These lights have almost identical dimensions as the MC32 lights and will use the same mounting holes on the trailer.
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  • Replacement Trailer Clearance Light with 3 Inch Centers
    The best replacement clearance light we have for you is the Oval LED Trailer Clearance Light part # MCL31RB for red or part # MCL31AB for amber. This light measures 4" long x 2-1/16" wide x 1" deep and mounts on 3" centers. It has a wire for power and a wire for ground but it won't be much work at all to run the new ground wire. It features 6 LED diodes and has a reflective housing. I have attached review videos for you as well.
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  • Does Optronics # MC66RB Incandescent Trailer Clearance/ Side Market Lamp Include Bulbs
    The Optronics # MC66RB Trailer Clearance/Side Marker Light does indeed include bulbs. Optronics also offers a similar LED lamp, part # MCL31RB. LED lamps draw a fraction of the power of incandescent bulbs, and will last considerably longer.
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  • LED Equivalent to Petersen Manufacturing 106A Trailer Clearance/Marker Light
    Although it's not from Petersen Manufacturing like the # 108-15A lens you'd looked at, Optronics makes an LED equivalent that we offer as part # MCL31AB for an amber lens or # MCL31RB for a red lens. Either lamp mounts on 3 inch centers, and is the same 4 x 2 size as the Petersen equivalents. You can see a video showing a typical installation by clicking the provided link.
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  • Replacement Clearance Lights for 2001 Dutchmen Travel Trailer
    It looks like you are needing replacement red clearance lights for the rear of your 2001 Dutchmen Travel Trailer. In order to choose replacement assemblies, I recommend taking a couple measurements on your existing units. Based on the picture you provided, something like the Optronics LED Trailer Clearance, Side Marker Light # MCL31RB might be an excellent replacement. This red, LED clearance light measures 4 inches long, 2-1/16 inches wide and 1 inch deep. It features a 2-wire design...
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  • Forest River LED Trailer Light Replacements
    For an LED version of the light you sent in a picture of you'd want the part # STL22RB with the grommet part # A70GB. I also attached an install video for this for you to check out as well. Since I am not totally sure what the other marker lights are we do have the LED part # MCL31RB which is 4 inch by 2 inch. For a standard roof vent to fit what you have currently we have the Ventline Ventadome kit part # V2094SP-30 which has a 12 volt fan in it. For interior lighting we have the...
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Info for this part was:

Employee Mike L
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Mike L
Employee Jameson C
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Jameson C
Employee Adam R
Expert Research:
Adam R
Employee Zack K
Video Edited:
Zack K
Employee Patrick B
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Employee Jacob T
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Employee Kathleen M
Installed by:
Kathleen M
Employee Cole B
Installed by:
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Employee David F
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Employee Laura H
Updated by:
Laura H
Employee Wilson B
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