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Optronics

LED Trailer Clearance or Side Marker Light w/ Reflex Reflector - 3 Diodes - Black Base - Red Lens

Part Number: MCL32RBB

4606 Reviews | 19 Questions

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optronics trailer lights clearance non-submersible led or side marker light w/ reflex reflector - 3 diodes black base red lens

optronics trailer lights marker non-submersible mcl32rbb

optronics trailer lights clearance 4l x 2w inch

optronics trailer lights clearance 4l x 2w inch led or side marker light w/ reflex reflector - 3 diodes black base red lens

optronics trailer lights marker 4l x 2w inch mcl32rbb

optronics trailer lights clearance marker led or side light w/ reflex reflector - 3 diodes black base red lens

optronics trailer lights non-submersible 4l x 2w inch mcl32rbb

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What to Know About the LED Trailer Clearance or Side Marker Light w/ Reflex Reflector

Feature Breakdown: LED Trailer Clearance or Side Marker Light w/ Reflex Reflector

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4" x 2" Rectangle. Trailer light serves as either a side marker or clearance light when properly mounted. Built-in reflex reflector. Black ABS plastic base. Surface mount to trailer - hardware not included. 2-Wire pigtail. P2 rated. Great Prices for the best trailer lights from Optronics. LED Trailer Clearance or Side Marker Light w/ Reflex Reflector - 3 Diodes - Black Base - Red Lens part number MCL32RBB can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.

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Optronics Trailer Lights - MCL32RBB

Highlights

Bright, Efficient LEDs: 3 red LEDs give strong light output with only 0.06 amps at 12.8V.
No Extra Reflector Needed: Built-in reflex reflector meets visibility needs in one unit.
Simple 2-Wire Setup: Power lead and ground make connection quick and clear.
Durable Build: Black ABS base and snap-on acrylic lens stand up to wear.
Low-Profile Fit: Measures 4" Lx2" Hx1" D for a clean, compact mount.
Road Legal: DOT compliant, P2 rated for 90° beam coverage.

Features to know about

Brighter Lighting with Lower Power Draw: LED Efficiency that Lasts

This 4" x 2" rectangular light uses 3 red LEDs that shine bright while drawing just 0.06 amps at 12.8V. Compared to old incandescent styles, these LEDs last up to 50 times longer and use a fraction of the power. With no bulbs or filaments to break, you get dependable light that just works every time you hook up.

Clean Mounting and Simple Wiring: Surface-Mount with 2-Wire Pigtail

Mounting this light is straightforward thanks to its surface-mount design and black ABS plastic base. It fits with 3" center-to-center bolt spacing and uses a simple 2-wire pigtail—one lead for power, one for ground. The setup keeps things tidy, with room behind the base to hide wiring for a clean look once installed.

Stay Street Legal and Seen: Built-In Reflex Reflector and P2 Rating

The built-in reflex reflector saves you from adding a separate one, meeting DOT compliance right out of the box. This P2-rated light produces a 90-degree total beam spread—45 degrees to each side—so it’s perfect for use as either a clearance light or a side marker light where extra visibility matters most.

Durable Construction for Everyday Use: Replaceable Snap-On Lens

The black ABS base provides a tough foundation, while the red acrylic lens snaps on securely yet can be replaced if needed. It’s made for everyday towing or hauling without worrying about cracked housings or loose covers over time.

Low-Profile Fit: Compact 1" Deep Design

At just 1" deep, this light keeps a low profile so it won’t stick out or catch on anything. Whether you’re upgrading to LED lights or replacing old housings, this sleek design blends in neatly while still standing out when it’s on.

Specs

Dimensions

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

Dimensional diagram of the Optronics MCL32RBB LED trailer clearance or side marker light, showing 4-inch by 2-inch rectangular shape and 3-inch mounting hole spacing.

Electrical

Power draw at 12.8V: 0.06 amps
Voltage: 12V DC

Lighting

Diodes: 3
Rating: P2 rated

Warranty

Lifetime warranty on LEDs

MCL32RBB Optronics LED Trailer Clearance or Side Marker Light w/ Reflex Reflector - 3 Diodes - Black Base - Red Lens - P2 Rated

4.8

4606 reviews

5 Stars		(3958)
4 Stars		(451)
3 Stars		(87)
2 Stars		(37)
1 Star		(73)

by: Cameron 09/08/2026

2023 Keystone Springdale Travel Trailer

Fit my 2023 Keystone Springdale RV perfectly. I have a feeling this is a universal 3-LED running light fixture. No instructions provided so the main detail to remember is that the ground wire is white. Easy to replace. Use a DC volt meter to check which wire is 12VDC and which is ground. Before cutting existing light fixture secure existing wires with tap to the RV surface so the loose wires don't drop into the wall cavity. Longest part of the replacement is removing the old sealant and cleaning the area around the mounting surface. I used butt splice shrink tubing with the low temp solder in the middle. These shrink tube butt splicers are amazing. Just center the solder ring over the twisted pair of wires and heat with a small torch or heat gun.

by: Jess 10/07/2025

Great Product. Lenses fit nice and tight to light housing.

Jess One Year Later

10/7/2026

Still look great and work perfect. No fading on the lenses and bright as ever! Great choice.

Claire H.

10/7/2026

@Jess Glad to hear those lights are still shining bright! Thank you for the update! :)

by: Eric 07/20/2026

2021 Jeep Wrangler Unlimited

A direct replacement
At a great price.

by: Gene 09/01/2026

Just exactly what I needed. They fit perfectly.

by: Richard 07/20/2026

Arrived fairly fast. Installed, worked perfectly

by: Erik 02/15/2018

2013 Ford Edge

Completed LED conversion. Sharing my completed project with you.

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by: Grant N 01/15/2017 One Year Later

I replaced all the clearance lights and taillights on our fifth wheel camper with these OE style LED versions. They are much brighter and therefore much safer, especially in the case of the tail/brake/turn lights seen elsewhere at etrailer. They should last a lot longer than the original bulb units. I also like the way they look as compared to the old bulb style. Our camper was only a year old, and I don't understand why they all wouldn't come from the factory with LEDs. I installed them all myself without issue.

Grant N. One Year Later

1/22/2018

Thank you for your follow up. I am still happy with my purchase,although they are installed on a fifth wheel camper trailer that doesnt getused a lot and usually in the daylight hours, so the lights havent got alot of hours on them. So far, so good. Thanks again.

by: Michael 04/23/2025

The picture that was used for the side light was spot on. I received exactly what I wanted finally, was Little Disappointed on the length of time to receive it

Brooke M.

4/24/2025

That's fair...shipping can be unpredictable at times for sure :)

by: Rory 02/16/2026

Perfect replacment for the light I had!

by: Running Lights 01/13/2020

Replaced taillight with LED so decided to change running lights as well!

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by: Doyle D. 01/19/2017 One Year Later

Love these led lights they show up much better at night. Only thing is they don't come with the wiring, you must also purchase the wiring plug, so don't forget to order them also.

Doyle D. One Year Later

1/19/2018

The Lights are great and would not hesitate to recommend them to anyone

by: Brandon H. 02/01/2020 One Year Later

Truly a superior product compared to our factory marker lights. These LED's are bright and considerably more visible. Great safety improvement for the traveling RV'er. Removal of the originals was relatively easy & I choose to also go with the heat shrink-type wire connectors to ensure longevity & connection waterproofing. Good product, good price and trailer is a great company to do business with as well. I really appreciate the customer reviews & the helpful customer support that retailer offers. Thank you!

by: Scott 03/16/2019

2019 Ford F-450 Super Duty

I’m very happy with these LED tail lights. Bought them to replace the ones that came on the trailer. They are bright and seem to be of high quality. They were easy to install. The only slight drawback is that it’s a bit tricky to get the wires to lay flat enough against the light to get it to sit flush with the back of the trailer. But in the end it worked fine. I would recommend these as a good replacement for older, smaller, incandescent tail lights.

by: Mike M 10/01/2017 One Year Later

I am actually using these marker lights for tail lights for my Case/Ingersoll Garden tractor. They are extremely bright and if I am mowing by the side of the road or traveling to a neighbors I can be seen a half mile down the road even in daylight. simple to install and super performance. Definitely will purchase for myself and have no problem recommending them.

by: Steve 04/15/2019 One Year Later

Low power led with good night time visibility. Added 1 of these to each side of cargo box for better side visibility behind the vehicle. Even when light is not on, the built in reflector still provides a measure of added safety which works much better than safety tape which kept peeling off at highway speed.

by: Alan 08/01/2020

Bought these to replace the LED marker lights on our RV which had several cracked lens. The RV OEM does not sell just replacement lens so I had the replace the entire light. I like these better than the RV OEM version because they have 3 LED's vrs two. The mounting holes matched perfectly. They look well made and the red lens snaps securely onto the base. I would not hesitate to purchase them again.

by: Daniel 09/30/2025

I'm well satisfied - the product is exactly what I wanted and the price was right.

by: Craig E. 04/23/2017

Great product way better than the old bulb style that came with my trailer actually visible in daylight

Craig E. One Year Later

4/23/2018

These LED lights still work great nice and bright and easy to see. Definitely a great investment.

by: Bill L. 10/01/2017

2013 Dodge Grand Caravan

Great product. Way brighter than the stock 1986 light

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by: Lee 05/31/2017

Very quick on the shipment and very easy to install. They are really nice and bright which is what I was trying to achieve on my 5th wheel . I installed all clearance and running lights, couldn't beat the price and quality.
I don't have any pictures but when I plugged it in (full sun) and backed away from rear the lights were bright! I am thoroughly pleased.

by: Jan 08/27/2017

This is a deep rich red LED light. The lens over is dark and when the light is on, gives off a deep red glow. Looks fantastic on our trailer. East to install. Has a little depth on the bottom so you can tack the wires in nicely.

by: Bob S. 09/28/2017

These are again AWESOME!!! Thanks again guys at etrailer.com for your awesome products!! Thanks again!

Bob S. One Year Later

10/1/2018

Very satisfied with these products, working like new and way better than OEM. Thanks again!

by: Kurtis 07/31/2024

Item arrived in neat packaging. Was as described. I installed same day on my travel trailer. Now I have better visible marker lights.stock lights were dim at best, these lights are far brighter. Service and follow through from Etrailer is truly the best.

by: Joe 09/22/2019

2016 Thor Four Winds Motorhome

Items were delivered in a timely manner even without expedited shipping. Items were as described and are a perfect replacement for the current incandescent clearance markers on my RV. I've done business with etrailer multiple times and they have yet to let me down. Highly recommended.

by: Bob S. 09/26/2017

These are awesome!!!! Also very easy to install. Very happy with these little guys that give off way way more light than the incandescent bulb ever did. Thank you so much!!

Bob S. One Year Later

10/1/2018

Still working great!! Recommend these products over the original incandescent ones to anyone! Thanks again!!!!

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See what our Experts say about this Optronics Trailer Lights

Do you have a question about this Trailer Light?

Looking For Replacement Marker Light SAE A PC2 DOT 17 For A 2022 Surveyor Legend
Hello James. I can definitely point you in the right direction, but the SAE number is not actually a part number, so this is not a good way to look up a specific light. The light in your picture looks very similar to the Optronics LED Side Marker Light # MCL32RBB. This light measures 4" long and 2" wide which is fairly standard for marker lights. If this is not the same size as the light you have, just let me know the dimensions of your light and I am happy to make a recommendation.
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Recommended 2 Wire LED Marker Lights for 2015 Four Winds Siesta RV
For your 2015 Four Winds Siesta RV, I recommend the Rectangular LED Trailer Clearance and Side Marker Light with Reflex Reflector- Amber # MCL32ABB and Red # MCL32RBB. These are both 2 wire LED lights that will allow you to add marker lights to your current system without issue. You can simply splice these into your current wiring to add the additional lights you desire. For connection, I recommend # 16-1-1 wire and heat shrink butt connectors # DW05744-10.
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LED Replacement Trailer Lights for Optronics 20327-02
We have exactly what you need directly from Optronics. You can get them with either a white base or a black base depending on what you need to match your trailer. White Base Red - # MCL32RB Amber - # MCL32ATB Black Base Red - # MCL32RBB Amber - # MCL32ABB Attached are some review videos for you to check out.
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Difference Between 1 Diode and 3 Diode Red 2" x 4" Clearance Lights
Lights like the LED Clearance or Side Marker Trailer Light w/ Reflector # MCL0032RBB are more or less universal so as long as the light you're wanting to replace on your 2019 Heartland Landmark Newport 5th Wheel measures 2" x 4" overall and only carries 1 function then this is a great option for your application. Each diode in an LED light assembly is essentially it's own light so the more diodes an assembly has the brighter and more full it will look. Single diode lights are still adequate...
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Replacement Red Clearance Light With 3 Diodes for 2014 Arctic Fox 811
The SAE number is not enough to help me find a replacement part for you. The SAE number simply tells us that the lens meets the government requirements for a taillight. I looked up your truck bed camper and the LED Trailer Clearance or Side Marker Light w/ Reflex Reflector - 3 Diodes - Black Base - Red Lens # MCL32RBB meets your criteria.
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Replacement For LED Bargman 59 Series Clearance Light With Black Base
The black base of the 59 Series isn't available but you can get exactly the same light (different manufacturer) from Optronics with either the LED Trailer Clearance or Side Marker Light - Black Base - Red Lens - 3 Diode # MCL32RBB or 1 Diode # MCL0032RBB. Both are the same 4" x 2" dimensions, same 3" on center mounting hole spacing, and same 2-wire design.
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Easy to Install Wiring Harness on 2004 Jeep Liberty
Since your 2004 Jeep Liberty does not seem to have the factory 7-way, the easiest to install 4-way that fits your Jeep is the Hopkins Plug-In Simple Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # 42475. You'll only need to plug this into your Jeep's harness, and getting to that is likely going to be the most difficult part as you'll have to remove some interior paneling to find it. Then for lights, I recommend going with LED marker lights. Ten marker lights is quite a bit...
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Replacement LED-Type Rectangular Red Clearance Light for 2001 Newmar RV
Based on my research the Hamsar 99063 is an LED-type clearance/marker light with a red lens that is roughly rectangular in shape. We do not carry this brand but we do have an extensive range of trailer lighting that meets these same general characteristics, LED operation, rectangular with a red lens. All are shown on the linked page. These include items such as # MCL32RBB and # MCL44RB1. These do not exactly match your specified dimensions but they are close.
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Is There a Replacement Lens for Optronics Trailer Clearance Light MC48RB
The Optronics Trailer Clearance or Side Marker Light # MC48RB does not have a replacement red lens; if you have this light and the lens was damaged you will need to replace the entire unit. This is an incandescent light and I recommend upgrading to an LED if you do need to replace the light because LED lights are brighter, last longer and will not draw as much power as their incandescent counterparts. The Optronics LED Trailer Clearance or Side Marker Light # MCL32RBB is a great option...
view full answer...
LED Side Marker Lights With 3 Diodes And a Black Frame With Red And Amber Lens Choices
The LED Trailer Clearance or Side Marker Light w/ Reflex Reflector is available with the black base in both the Red Lens # MCL32RBB and Amber Lens # MCL32ABB. They also have Replacement Lenses available in Red Lens # A32RB and Amber Lens # A32AB. These will come in handy if the cover were to become damaged or fall off while traveling.
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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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Wire Gauge and Diameter of Screw Needed for Optronics LED Trailer Clearance or Side Marker Light
The diameter of the screw holes in the LED Trailer Clearance or Side Marker Light with Reflex Reflector # MCL32ABB (Amber) and # MCL32RBB (Red) is 1/4 of an inch. In regards to wire, it is 16 gauge so if you need leads from your trailer you can use the Primary Wire - 16-Gauge # 16-1-1 with Butt Connectors # 05731-5. I have added links to video reviews for you to check out as well of the LED Trailer Clearance or Side Marker Light with Reflex Reflector # MCL32ABB (Amber) and # MCL32RBB (Red).
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Parts Needed to Install VueSmart Backup Camera and 3rd Brake Light To Scamp 16 Travel Trailer
You can fit the Optronics LED Trailer Clearance or Side Marker Light # MCL32RBB to the VueSMART RV and Trailer Backup Camera # HM34FR. The Optronics light has a black base to match the base of the VueSMART camera. Since you are wanting to use the light as a 3rd brake light rather than a running light you will need a 3rd Brake Light Logic Module # PP20-702 to separate the brake light signal from the turn signals on your Scamp 16 trailer. This will require you to run wiring from both tail...
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Recommended LED Red Clearance Light Less Than 1" Tall
I may have a solution for you, but the # MCL32RBB is a fairly low profile light at 1" so the only alternative would be a recessed mount light. I recommend checking out the Optronics LED Clearance or Side Marker Trailer Light - Chrome Plated - 2 Diodes - Red Lens # MCL71RB, which is also a 4" x 2" x 1/2" thick LED light that might fit the bill. At this time, this would be the only solution we have that is similarly sized and is less than 1" tall/deep.
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What Amber Clearance Light Will Match Up With Red Clearance Light # MCL32RBB
When it comes to replacement LED lights on your 2010 Flagstaff 228 pop up camper that measures out to 4 inch by 2 inch, I recommend The LED Trailer Clearance or Side Marker Light w/ Reflex Reflector - 3 Diodes - Black Base - Red Lens # MCL32RBB and The Trailer Clearance or Side Marker Light w/ Reflex Reflector - Rectangle - Amber Lens - Black Base # MCL32ABB. Both lights measure out to be 4 inch by 2 inch and the distance between mounting holes center to center is 3 inches. I have attached...
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Red LED Version of the Clearance Light MCL32ABB
The red LED version of the part # MCL32ABB that you referenced is the part # MCL32RBB. This is an exact match minus the lens color.
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Optronics LED Trailer Clearance or Side Marker Light With Black Base
If you don't like the white base of the LED Trailer Clearance or Side Marker Light # MCL32RB we do have the exact same light with a black base: - LED Trailer Clearance or Side Marker Light with Reflex Reflector - 3 Diodes - Black Base - Red Lens # MCL32RBB I have added a link to a video review for you to check out as well.
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Version of the Clearance Light MCR32RB that has a Black Base
Sounds like you are looking for the part # MCL32RBB. It is an LED, black-based version of the light you mentioned.
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Version of Clearance Light MC32RB with Black Base
Yes, for a version of the # MC32RB that has a black base you would want the part # MCL32RBB instead.
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Info for this part was:

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Installed by:

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Installed by:

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