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Optronics Trailer Clearance and Side Marker Light - Submersible - Incandescent - Round - Red Lens
(2623 reviews)
Price: $3.64
In Stock
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Optronics Trailer Clearance and Side Marker Light - Submersible - Incandescent - Round - Red Lens
Part Number: MC54RB
In Stock
$3.64
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- All Info
- Reviews (2623)
- Q & A (0)
- Videos (1)
- Photos
Optronics Trailer Lights - MC54RB
Highlights
- Reliable In Any Weather: Sonically sealed, waterproof housing keeps water out for lasting use.
- Easy Power Connection: Uses standard 2-prong plug for simple hookup to 12V DC systems.
- Compact and Bright: 2-15/16" round red lens stands out for clearance and side marking.
- Simple Surface Mount: Built-in flange lets you mount securely without extra brackets.
- Road Legal: DOT compliant and PC rated for full 180° visibility coverage.
- Quick Bulb Swap: Standard incandescent bulb can be easily replaced when needed.
Features to know about
Reliable Illumination in Any Condition: Submersible, Sealed Construction
Water and road grime are no match for this light. The housing and lens are sonically sealed to form a single waterproof unit, making it fully submersible. That means you can count on it to shine bright even after repeated exposure to rain or when launching at the ramp. There’s no moisture sneaking in to corrode the socket or kill the bulb—just dependable performance that lasts.
Bright and Clear Visibility: PC-Rated 180-Degree Beam Coverage
Good lighting isn’t just about brightness—it’s about coverage. This PC-rated light shines at a 90-degree angle to either side of the centerline for a full 180 degrees of illumination. Positioned properly, it doubles as both a clearance and side marker light, so other drivers can see your trailer from the front, back, or side. That extra visibility keeps things safer day or night.
Straightforward Installation: Surface Mount with Built-In Flange
Mounting is simple and secure thanks to the built-in flange design. Just surface mount it with your own hardware and plug in using a standard 2-prong connector (A46PB or A86PB, sold separately). No complicated wiring or custom brackets—just a quick, tidy install that stays put once mounted.
Durable and Serviceable: Replaceable Incandescent Bulb and Polycarbonate Housing
Built to handle everyday use, this light uses a tough polycarbonate housing with a red lens over a replaceable incandescent bulb. When it’s time for maintenance, swapping out the bulb is easy—no need to replace the whole assembly. Drawing only 0.2 amps at 12.8V, it stays energy-efficient while delivering steady light output you can rely on.
Compact and Compliant: Designed for Standard Applications
Measuring 2-15/16" in diameter and 1-3/8" deep with 2-1/4" mounting hole spacing (center to center), this round light fits neatly into common setups without modification. It’s DOT compliant and ready for use wherever rear clearance or side marker lighting is required—simple, functional, and built for the job.
Specs
Dimensions
- Overall dimensions: 2-15/16" diameter x 1-3/8" deep
- Light face diameter: 2"
- Distance between mounting holes (center on center): 2-1/4"
Electrical
- Bulb type: incandescent
- Power draw at 12.8V: 0.2 amps
- System compatibility: 12V DC
Warranty
- Warranty length: 3-Year warranty
MC54RB Optronics Trailer Clearance and Side Marker Light - Submersible - Incandescent - Round - Red Lens - PC Rated
Alternate part number: MC-54RB
Video of Optronics Trailer Clearance and Side Marker Light - Submersible - Incandescent - Round - Red Lens
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Video Transcript for Breaking Down the Optronics Trailer Clearance and Side Marker Light
Here we have Optronics Sealed 2 Inch Round Side Marker and Clearance Light with Flange Mount part number MC54RB. This lens and the housing of this light are sealed and waterproofed. The back of the light uses a plug design that is designed to use industry standard 2 prong wire harness leads. The light is covered by a 3 year warranty excluding the bulb. Next we are going to hook the light up to a power supply so you can see how it looks. We will connect our ground connection to one of the posts in the back and connect our power to the other. Next we will turn off the overhead lights so you can see how bright the light is. And that does it for Optronics Sealed 2 Inch Round Side Marker and Clearance Light with Flange Mount part number MC54RB.
Ratings & Reviews
4.9
2623 reviews
by:
Pete
03/16/2015
Good quality product. Exactly as described. The only complaint that I have is that there are zero instructions. What instructions would one need for a light? Which wire is used for ground, black or white? This may not be important for an incandescent bulb but reverse voltage will typically blow an LED. If you do house wiring, you expect the white wire to be ground. If your background, like mine, is radio and DC circuits then the DC ground wire is typically black or green. On these lights, the ground is white.
by:
Gary
01/25/2022
great light for the price Iwill save my E Mail so i will order some more when I need them
by:
johnny blankenship
03/14/2017
i am verry satisfied with the product i dont have any pictures right now i just got them today
by:
wayne o.
06/27/2014
item arrived quickly and so far performing flawlessly
by:
Kevin George
05/05/2015
Will send pics when installed...
by:
Kenneth
03/28/2023
EASY ASSEMBLY
by:
John
08/22/2022
was what I order and was on time
by:
John
10/13/2026
These style of bulbs came off an older enclosed trailer my girlfriend owns for her floor cleaning business. Most of them didn't work and all of them had faded so that they were mostly clear and faded. Not only did I get new bulbs but I wasn't forced into upgrading the entire trailer to led bulbs.
by:
WTH
04/29/2026
2014
Ford
F-150
High quality, inexpensive marker light. Easy to install, it happened to be in my mailbox as I was departing with the trailer so I just popped it in. Matches the OEM lights on the trailer.
Gwendolyn Y.
5/4/2026
Sounds like perfect timing to me!
by:
John in Vancouver
07/05/2021
I bought 5 of these amber lights for the front of my trailer, and 5 red counterparts for the back, and similar oval side lights too, to replace all of the 50-year-old corroded lights on my 1970 Shasta M1400. I am super pleased with them, as they look period-appropriate, and are very bright as well. The only issue I had was that the Shastas of that period used the aluminum skin of the trailer as the ground, so there is no "ground wire." On a couple of them, the caulking I put under the lights made the ground screw not find the metal skin to ground the circuit. So just a note to be careful when you put the caulk on the back of the light when you are installing. Make sure you don't caulk over, and thus insulate, the ground plate. Btw, this was my first purchase from etrailer.. and in the past year, I have purchased probably another $xxxx of stuff for our trailer. Great selection, great service. This website really should be your first stop when modernizing your "vintage" trailer.
John V.
7/6/2022
A year after purchasing these, I continue to be very pleased with these lights. I actually replaced all 20 of the marker lights and the big tail lights with these LED lights from e-trailer. I have had only one marker light lose its ground connection, which I remedied by replacing the sheet metal mounting screw with a slightly large screw. As noted above, this is not a problem with the LED lights, but rather, with the vintage trailers system of grounding through the sheet metal skin of the trailer, rather than providing a positive and negative wire lead to each light. People often stop us at camp grounds to ask questions about our old shasta, and one person even marveled that the lights were still working after 50 years. A good testament to how natural they look.
by:
Susan
10/25/2026
Although they did come a day later than expected they were exactly what he was looking for. Ordering was very easy on line and packaging was well done. We would order from them again.
by:
John
10/08/2026
The exact product I was looking for. Most of the existing drywall bulbs had lost their color even though some of the bulbs still worked.
by:
Harvey C
05/18/2018
As per your request here is a photo of the installation of the running lights that I purchased from etrailer. I have included a photo of the original light fixtures that I replaced. The originals were proprietary to Winnebago Industries, but have not been available for some time. The top piece that the lights mount on are made of a plastic material & was molded to accept the fixtures into a small recessed area. As a consequence, I could find no replacements at the local suppliers. I found the MC68RB fixtures on your web site & felt sure that they would fit the recessed area. They did fit, & I was able to install them with some common sense adjustments to the new fixture & the area that received the fixture:
1 added another wire to provide ground for the light.
2 drilled a hole to accommodate the wires in the center of area to receive the fixture, as the original hole was set to one side.
3 mounting holes were wider than new fixture - used one of the original holes & used a self drilling screw on the other.
We are happy with the installation, and in our opinion there is very little difference in appearance of the area between original & replacement provided by your company. There are at least 2 models (View & Nation) that used the original, global-bright 122R/122Y, sold between 2005 & 20013 from what I can tell.
I no longer have the good camera that took the photo of the original photo. The photo of the replacement fixtures was taken by a smart phone, hence, less quality of photo. Sorry the quality is so poor.
1 added another wire to provide ground for the light.
2 drilled a hole to accommodate the wires in the center of area to receive the fixture, as the original hole was set to one side.
3 mounting holes were wider than new fixture - used one of the original holes & used a self drilling screw on the other.
We are happy with the installation, and in our opinion there is very little difference in appearance of the area between original & replacement provided by your company. There are at least 2 models (View & Nation) that used the original, global-bright 122R/122Y, sold between 2005 & 20013 from what I can tell.
I no longer have the good camera that took the photo of the original photo. The photo of the replacement fixtures was taken by a smart phone, hence, less quality of photo. Sorry the quality is so poor.
by:
Scott
08/03/2018
In the process of detailing my 2003 motorcycle trailer to get it looking good again. Clearance lights needed replacement. The original red lights were now faded pink for goodness sake! Replaced all 20 lights with the thin-line red and amber side marker lights. Replacement couldn't be more simple; remove original lights, snap in new. Exact fit and everything worked perfectly. Now, once the new tires and wheels get here we'll be in good shape! The new lights definitely make you say, "no way that trailer's 15 years old" :-)
by:
Dean
04/30/2018
2018
Chrysler
Pacifica
Light was an identical replacement. No issues, great service and fast service. Will buy again from etrailer if I have to again.
Dean
4/30/2019
Theyve been working great. Hardest part was finding out the proper part number from the trailer manufacturer to order the right one. The products are still working great.
by:
Charles T.
04/10/2012
to see at night the following lights were added to my custom built trailer for night time safety.
1- Side mount red and yellow fender light which only works when either the brakes or turn signal are in use.
2- Front Clearance lights, which give additional lighting at night when approaching on coming vehicles.
1- Side mount red and yellow fender light which only works when either the brakes or turn signal are in use.
2- Front Clearance lights, which give additional lighting at night when approaching on coming vehicles.
by:
John G
01/25/2019
2012
Toyota
Highlander
Light work great!!!
I always buy from etrailer Customer service and fast delivery
I always buy from etrailer Customer service and fast delivery
John G.
1/26/2020
Still working after a year later going in and out of saltwater [Two Thumbs Up]
by:
Perry E.
03/28/2017
These running lights work great. I use them on my boat trailer which is exposed to a lot of salt water. No problems, for they are a sealed light. For the price I bought extras but haven't had to use them. It's been about a year now.
by:
Michael
10/27/2026
As ordered. On time.
by:
Henry
07/27/2019
Just what I need for my motorhome. Arrived much sooner than I expected. Installation was a snap.
Henry Z.
7/28/2020
Great.
by:
Mark
08/05/2015
I purchased this light assembly and a rubber grommet to replace the right marker light on my Karavan trailer. It fit perfectly and had the proper 2 pin connector. Ordering was easy and it arrived promptly.
by:
Jg
12/20/2017
Broke one of my warning lights and stretched out the rubber grommets. Perfect fit and matched my existing lights like nothing ever happened. Awesome price and was delivered quickly. You have a customer for life thank you.
by:
John
09/21/2026
Took 11 days to arrive.
by:
Joe
09/06/2026
As described
by:
Fred S.
03/25/2015
As a returning customer, I am pleased with your product's and service. The red and amber clearance lights are for my 1967 MCI Greyhound bus RV conversion.
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See what our Experts say about this Optronics Trailer Lights
- Red and Amber Round Clearance Lights With Flush Mounted BasedWe do have both red and amber round clearance lights with a flush-mounted base you can screw in. The 2-1/2" Optronics # MC58AB is an amber light while the # MC58RB is red; you only need to remove the lens to access the white mounting base, screw it in and then put the lens back on. I have added a video review which details this for you to check out.
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Info for this part was:
Written by:
Tyler C
Video Edited:
Patrick B
Updated by:
Wilson B
Updated by:
Brian T
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Gary F.
1/26/2023
Great