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

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

Part Number: MCL31RB
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$6.43
Retail:$15.53
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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 (178)
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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




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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   (178 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:

These are very bright compared to the single bulb 12V standard lights they replaced. Excellent for clearance lights on the side rear of the horse trailer



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:

Just can’t say enough good things about Etrailer they get the parts to me super fast and everything was correct! Ashley is very helpful.



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:

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:

Exactly as advertised.



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



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:

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



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:

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:

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:

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:

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



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:

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 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:

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:

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.


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Show More Reviews

See what our Experts say about this Optronics Trailer Lights

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    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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    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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  • 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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  • Clearance Light Replacement for Glo Brite 122-Y and 122 R 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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  • Mounting Instructions for Optronics # MCL31RB LED Clearance/Marker Lights
    I'm assuming that you're speaking of the Optronics # MCL31RB side marker/clearance lamps. These lamps are designed to surface mount using machine or self tapping screws as shown in the photo I've provided for you. A gasket isn't available, but using a thin bead of # 0160297 silicone to prevent water from getting behind the lamp would be an excellent idea.
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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.
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  • Recommended LED Marker Lights for Trailer Over 80 Inches Wide
    The Trailer Clearance or Side Marker Light w/ Reflex Reflector - LED - 3 Diodes - Red Lens - Black Base # MCL32RBB will have the room to hide wires. The amber lens # MC32ABB is an incandescent bulb. I believe you will want the Oval LED Trailer Clearance, Side Marker Light with Reflector, 6 Diode - Amber # MCL31AB along with the Oval LED Trailer Clearance, Side Marker Light with Reflector, 6 Diode - Red # MCL31RB. For the light bar, I recommend the Sealed, 3-Light Truck, Trailer Identification...
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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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  • 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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  • 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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  • Availability of Replacement Trailer Taillights Reflect-O-Lite SAE-P2-A-72
    For an exact replacement to what you sent in a picture of we have the part # MCL31RB for a red taillight and part # MCL31AB for an amber light.
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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 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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  • Replacement Marker Lights for Bargman 552 on 1989 Pacer Arrow RV
    Hello James; the Bargman 552 lights you have are no longer around but we do have a similar replacement. The closest match comes from Optronics and measures 4" long x 2-1/16" tall. You can choose from the following based on LED or incandescent and color: -Optronics LED Clearance or Side Marker Light w/ Reflex Reflector - Red Lens # MCL31RB -Optronics Trailer Clearance or Side Marker Light w/ Reflector - Incandescent - Red Lens # MC31RB -Optronics LED Clearance or Side Marker Light w/...
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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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  • 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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  • 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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  • Replacement Trailer Light Assembly to Replace Glo Brite # 122Y
    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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  • 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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  • 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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Info for this part was:

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