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LED Clearance or Side Marker Trailer Light w/ Reflector - 1 Diode - Black Base - Red Lens
Optronics

LED Clearance or Side Marker Trailer Light w/ Reflector - 1 Diode - Black Base - Red Lens

Part Number: MCL0032RBB
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$8.19
Retail:$18.09
You Save: 55%
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4" x 2" Rectangle. Trailer light serves as either a clearance or side marker light. Built-in reflex reflector. Durable 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 Clearance or Side Marker Trailer Light w/ Reflector - 1 Diode - Black Base - Red Lens part number MCL0032RBB can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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Optronics Trailer Lights - MCL0032RBB

Highlights

  • Brighter, Low-Draw LED: One white LED gives strong red light using only 0.06 amps at 12V.
  • Two Uses, One Light: Works as a clearance or side marker light for simple setup.
  • Built-In Reflector: Reflex reflector removes need for a separate reflective lens.
  • Tough Build: Acrylic lens and black ABS housing stand up to weather and road wear.
  • Simple Install: Surface mounts with 3" hole spacing and a 2-wire power/ground design.
  • Consistent Coverage: P2 rating provides a 90° beam pattern for clear visibility.

Features to know about

Brighter, More Efficient Lighting: 1-Diode LED Design

Swapping out old incandescent lights for LEDs is one of the best upgrades you can make. This 4" x 2" rectangular light uses a single white LED behind a red lens to deliver clean, bright light while drawing only 0.06 amps at 12V. It’s efficient and long-lasting—LEDs last up to 50 times longer than bulbs with fragile filaments. That means less power draw, less heat, and no burned-out bulbs to replace.

Simplifying Installs: Surface-Mount with 2-Wire Setup

If you’re looking for an easy install, this light keeps things simple. The surface-mount design lays flat against the trailer and only needs a small hole for wiring. The mounting holes are spaced 3" center to center, and the 2-wire pigtail makes the connection straightforward—one power lead and one ground wire. You get a clean, solid fit without extra brackets or special tools.

Visible and Compliant: P2-Rated 90-Degree Beam Pattern

Visibility matters on the road, and this P2-rated light delivers a focused, reliable beam. It shines at a 45-degree angle on each side of center for a total of 90 degrees of coverage, meaning it works perfectly as either a clearance or side marker light. Other drivers will see you clearly head-on or at an angle, keeping your setup safe and compliant.

No Extra Reflectors Needed: Built-In Reflex Reflector

Instead of juggling separate reflector mounts, this light has one built right in. The reflex reflector built into the red acrylic lens meets visibility needs even when the light itself is off. It keeps your trailer visible from multiple angles, especially under headlights at night, without adding another part to install or maintain.

Durable Construction That Lasts

Made with a tough black ABS housing and a durable snap-on acrylic lens, this light is built for real use on the road. It’s non-submersible but sealed tight enough to handle weather exposure. Optronics backs the LEDs with a lifetime warranty, so you can count on long-term performance wherever you go.

Specs

Dimensions

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

Technical diagram showing measurements and mounting configuration of Optronics MCL0032RBB red LED clearance or side marker trailer light with black base and built-in reflector.

Electrical

  • Power draw at 12V: 0.06 amps
  • Voltage: 12V DC systems

Lighting

  • Diodes: 1
  • Light rating: P2 rated
  • Beam pattern: 90-degree

Installation diagram showing surface-mount trailer light attached flat against trailer exterior with flange and wiring hole for Optronics LED marker light.

Warranty

  • LED warranty: Lifetime

MCL0032RBB Optronics LED Clearance or Side Marker Trailer Light w/ Reflex Reflector - 1 Diode - Black Base - Surface Mount - Red Lens - P2 Rated





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 2" Rectangle. Trailer light serves as either a clearance or side marker light. Built-in reflex reflector. Durable black ABS plastic base. Surface mount to trailer - hardware not included. 2-Wire pigtail. P2 rated.

by:

Hooked it up to a 12V battery before installing and the light did not work. Circuit board showed voltage but no light.

Loren profile picture

Loren

4/27/2024

Light fixture was replaced at no charge and it works perfectly.

Bud M. profile picture

Bud M.

5/17/2024

@Loren Great to hear things were resolved and your new light works perfectly. Thank you for the update.


by:

Nice and bright



by:

Great service, excellent price. Thank y ou!



by:

Shipping and delivery was very fast and the customer service is excellent! I will order from them again.



by:

Also a nice improvement



by:

Seems to be working great



by:

Perfect fit



by:

Does exactly what it’s supposed to do



by:

Light is perfect. Shipping was slow but tracking was accurate. Selection is good but would prefer that site be separated by brand if possible. Finding items for our Mirada was challenging.



by:

Still good after a year! Exactly as ex pected.



by:

These are a perfect replacement for Bargman 59. I bought the unit because i was not sure if the lenses matched. I simply swapped just the lenses



by:

Awesome thanks looks great



by:

Product fit perfectly; easy to install with video help; sales lady new just what I needed;



by:

Exact replacement on my Montana 5th whe el.



by:

Etrailer had no issues finding me the correct led marker lights for my travel trailer they shipped it out and received it in a decent time frame. Thanks etrailer



by:

On time delivery.



by:

Item as described and fast delivery. Thank you



by:

Direct fit in a great and very bright at night



by:

Good product, shipping a little pricey, delivered as promised.



by:

Perfect new light. Works great.



by:

Easy to install. Came fast. Good price. Awesome customer service.



by:

Exact replacement for the damaged marker lights on my Class C Motor Home. Great Price and FAST Shipping from etrailer.



by:

All rear Red marker lights on Motorhome replaced and brighter than ever! Very happy with this purchase!



by:

The light fixture is great, but it says black Base and it came with a white base not matching with my trailer’s right light!



by:

The experience was exactly like it should have been. I recieved the light in a timely manner and it was an exact diplicate of my broken one, except the new one wasn't broken. Installed the light and it works like it should!!!

Brian profile picture

Brian

7/22/2026

Its just like the new one in our RV, same fit and finish, its like the manufacturer bought them from you!!

Heather A. profile picture
Etrailer Expert

Heather A.

7/22/2026

@Brian I got a laugh out of "the new one wasn't broken." That's always a nice upgrade! Thanks for taking the time to share your experience, and I hope it gives the next person a little extra confidence that this light is a perfect replacement.

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See what our Experts say about this Optronics Trailer Lights

  • Do You Still Carry the Bargman 47-84-610 LED Surface Mount, What Would be a Good Replacement?
    Hello Carlos, I am sorry, but the Bargman 47-84-610 LED is no longer available. The closest options we have to the Bargman 47-84-610 LED would be the LED Trailer Tail Light w/ Reflector, 4 Function, Weatherproof, 76 Diodes, Clear/Red Lens # DG52721PB, or the LED Trailer Light w/ Reflector, Brake, Tail, Turn, Surface Mount, Rectangular, Red # DG52720PB. The mounting holes on both of these lights are a little wider than the Bargman you mentioned. They are 10 1/2" apart. I attached an image...
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  • Replacement LED Clearance Lights for 2015 Winnebago Minnie Winnie
    Hello Steve; the closest thing we have to your requirements is the LED Clearance or Side Marker Light with Reflector # MCL40RB. This measures 4" long x 1-1/2" tall x 15/16" thick with mounting holes 3" apart on center. This light is sonically sealed so it is waterproof and submersible. The only thing is the wiring on the back. It is toward the center but not dead center coming out of the light. We do have the slightly taller # MCL0032RBB which has the wires coming out of the middle in...
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  • Are There Replacement Lenses For Optronics Trailer Clearance or Side Marker Lights
    Hey Johnny, Unfortunately, the replacement lenses for the Optronics Trailer Clearance or Side Marker Light w/ Reflector - Incandescent have been discontinued. Reason is the amber version of that light is already discontinued and the red version is in the midst of being discontinued. So the best I can offer are replacement lights which are similar in size, the 4" x 2" Clearance or Side Marker Trailer Light w/ Reflector - Amber # MCL0032ABB and Red # MCL0032RBB.
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  • Replacement LED Trailer Lights For a 2003 Pace American JT612TA2 Enclosed Trailer
    Unfortunately Steve, I have no way to see exactly what lights came on your 2003 Pace American JT612TA2. Based on some images I could find it looks like your trailer uses the oval style light like the Optronics # STL72RB which is 6-7/16" long. If yours is a different length please let me know. For the clearance lights on the fenders they look like the snap in lights like the Amber # AL91AB and Red # AL91RB. The top 3 marker lights look like the # MCL0032RBB. These are the very common 4"x2"...
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  • Replacement Amber and Red Running Lights for a Diamond Cargo Trailer
    Hey Gregory, thanks for reaching out! What do you think about the Optronics Amber # MCL0032ABB and Red # MCL0032RBB lights? I'm not sure the size lights you're needing to replace on your Diamond cargo trailer, but if your current ones measure about 4" wide and 2" tall these will work (see attached photo). Are you looking to upgrade your current lights, or just needing to replace some that got damaged?
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  • Looking For Light That Goes With A32RBP Lens Or Suitable Replacement
    Hello Howard, thanks for reaching out. I do have a good solution for you, but we do not carry that exact Optronics light that goes with the A32RBP lens. We do however, have a light from Petersen that is virtually identical. Take a look at the following: - Piranha LED Trailer Clearance or Side Marker Light with Reflex Reflector - 6 Diodes - Red Lens # PE74QV This is a 4" long by 2" wide side marker light. Looking at pictures of the A32RBP online it looks like almost the exact same thing....
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  • Foam Gasket For Optronics MCL0032 Series Marker/Clearance Lights
    The Foam Gasket # A32GB is for your LED Clearance or Side Marker Trailer Light in Amber # MCL0032ABB or Red # MCL0032RBB.
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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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  • Should Side Clearance Lights on Boat Trailer Act As Turn Signals
    It sounds like you have something like the Amber Lens # MCL0032ABB at the front and the Red Lens # MCL0032RBB at the back of your fenders. Normally these lights are designed to switch on and off with your headlights since they are for clearance purposes. Some trailers may be a bit more fancy and have amber lights that act as both running lights and turn signals but for a boat trailer your amber lights would more likely than not be on the same circuit as your running lights so it sounds...
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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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  • Recommended Replacement Red Clearance Light With 3" Mounting Hole Spacing
    The LED Clearance or Side Marker Trailer Light w/ Reflector # MCL0032RBB has a 3" spacing from mounting hole to mounting hole. Its overall dimensions are 4" long x 2" tall x 1" thick. You'll want to use some sealant around the outer edge of the light once installed to prevent any water from getting behind it and into the wall of the trailer.
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  • Replacement Recommendation for Red Clearance Lights at Back of a 2005 Monaco Dynasty
    Hi Cheri! The closest lens we've been able to find to what you're needing is the Optronics # A32RB, but even then we've seen reports that this doesn't fit your light housing perfectly. Since there aren't any direct replacement solutions I recommend replacing your entire light assemblies with the LED Clearance or Side Marker Trailer Light w/ Reflector # MCL0032RBB. When I was looking into this there were a handful of people who have swapped out these clearance lights and they said they...
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  • Replacement Red Lens for Bargman 59 Light on Motorhome
    The replacement lens that you are looking for is the (discontinued) Clearance Light Replacement Lens #59 Red 34-59-010 from Bargman which has 4" L x 2" W x 5/8" H dimensions just like you have. Attached is a review video for you to check out. If you aren't able to find this lens somewhere else then I recommend replacing the whole light assembly with the LED Clearance or Side Marker Trailer Light w/ Reflector # MCL0032RBB from Optronics.
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  • Is There a Wireless Rear Camera System Which Integrates Into Rear Light For a 2015 Forest River XLR?
    The Furrion Vision S Wireless RV Observation Camera System # FR98NR uses a rear camera which is attached to a rear clearance light. While this light is smaller than the light on your 2015 Forest River XLR Hyperlite it can still be used. You will need to add additional Rear Lights # MCL0032RBB to cover the holes of the longer bar light you have. This system also includes side cameras which similarly integrate into the side clearance lights. This helps you to better see your blind spots...
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  • Will The LED Side Marker Trailer Light # MCL0032RBB Fit a 2021 East to West Alta 1900MMK Camper?
    While I can not look at what exact parts are installed on your 2021 East to West Alta 1900MMK travel trailer I was able to see images and videos where the LED Clearance or Side Marker Trailer Light # MCL0032RBB does appear to be the correct part. To verify this you will either need to contact the manufacturer with your VIN information or measure your current light. I have included an image below which shows the measurements for these lights. You will also want to check the wiring behind...
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Do you have a question about this Trailer Light?


Info for this part was:

Employee Jeff D
Installed by:
Jeff D
Employee Kathleen M
Installed by:
Kathleen M
Employee David F
Installed by:
David F
Employee Dustin K
Video by:
Dustin K
Employee Chris R
Video Edited:
Chris R
Employee Wilson B
Updated by:
Wilson B
Employee Noah M
Updated by:
Noah M
Employee Carrie F
Updated by:
Carrie F
Employee Daron K
Edited by:
Daron K
Employee Brian T
Written by:
Brian T

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