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Optronics LED Trailer Clearance or Side Marker Light - Submersible - 3 Diodes - Rectangle - Red Lens

Optronics LED Trailer Clearance or Side Marker Light - Submersible - 3 Diodes - Rectangle - Red Lens

Item # MCL95RB
Our Price: $8.90
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Trailer Lights
Shipping Weight: 0.09 lbs
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2-1/8" x 1-1/8" Rectangle. Waterproof, LED trailer light serves as either a side marker light or clearance light when properly mounted. Durable polycarbonate lens and housing. Stud mount to trailer. Single wire design. P2 rated. Great Prices for the best trailer lights from Optronics. Optronics LED Trailer Clearance or Side Marker Light - Submersible - 3 Diodes - Rectangle - Red Lens part number MCL95RB can be ordered online at or call 1-800-940-8924 for expert service.
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Optronics Trailer Lights - MCL95RB

  • Clearance Lights
  • Rectangle
  • LED Light
  • Red
  • 2L x 1W Inch
  • Surface Mount
  • Rear Clearance
  • Side Marker
  • Submersible Lights
  • Optronics

2-1/8" x 1-1/8" Rectangle. Waterproof, LED trailer light serves as either a side marker light or clearance light when properly mounted. Durable polycarbonate lens and housing. Stud mount to trailer. Single wire design. P2 rated.


  • LED trailer light functions as a clearance light or side marker light when properly mounted
  • Sonically sealed, waterproof housing and lens unit is submersible
  • 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 polycarbonate housing and lens
  • Red lens over white LEDs
  • Compatible with 12V DC systems
  • Stud mounts to trailer with included stud and stainless steel base
  • 1-Wire design grounds through mounting hardware
  • P2 rated


  • Dimensions: 2-1/8" long x 1-1/8" wide x 1-1/16" deep
  • Diodes: 3
  • Power draw at 12.8V: 0.051 amps
  • Lifetime LED warranty

Manufacturer Cross Reference
Light will work as an exact replacement for:
Bargman # 42-99-402

dimensions of light

Sonically Sealed, Waterproof Trailer Light

The waterproof construction of this light makes it ideal for use on trailers that may be submerged, like a boat trailer. The housing and lens are sonically sealed together to create a single unit, which means that water will not get into the light and damage the diodes or circuit board.

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.

MCL95RB Optronics LED Clearance or Side Marker Trailer Light - Submersible - 3 Diodes - Rectangle - Red Lens - P2/P3 Rated

Alternate part number: MCL-95RB

California residents: click here

Customer Satisfaction Score:

Customer Reviews

Optronics LED Trailer Clearance or Side Marker Light - Submersible - 3 Diodes - Rectangle - Red Lens - MCL95RB

Average Customer Rating:  4.8 out of 5 stars   (242 Customer Reviews)

2-1/8" x 1-1/8" Rectangle. Waterproof, LED trailer light serves as either a side marker light or clearance light when properly mounted. Durable polycarbonate lens and housing. Stud mount to trailer. Single wire design. P2 rated.


These were just what I was looking for. Worked as expected. Helps keep the inside of my travel trailer much cleaner. Clear install instructions.


The light stopped working after a number of times in the water. I think water got into it.......

Etrailer Expert

Jenny N.


If the LEDs have failed, then the light does have a lifetime warranty. I can send you the warranty details if you would like.


Nice and bright light. Didn’t really like that the wiring was not through the bolt. Otherwise this is a good replacement light.


Great company


Very good led marker lights°°


Stylish, durable, excellent red side running lights.


Awesome product, great communication and rapid shipping—highly recommended a++++


great service


Lights were perfect for my utility trai ler

by: is quite possibly the most dependable site on the internet. I was trying to match a broken side marker light on my trailer and a general internet search was largely unusable. I went to etrailer as I had in the past and the site stepped me through options and categories and gave me the precise match I wanted - quickly. The product is basic, finding it was the challenge. I'm more than satisfied with it.


Great LED clearance lights, replaced old ones on my boat trailer. These are far
brighter, and more dependable than the old bulbs that rarely worked. Very happy with theses lights

William D.


Still going strong, no checking bulbs or connectors this season, all my LEDs are working great, hook up and go!


I replaced lights on my boat trailerwith these lights,the others were bad.these led's installed without a hitch and are much brighter than the old one's.haven't had boat in the water yet but so far so good.

Coonie B.


working fine.


All items are as they are advertised. Arrived within the timeframe stated. They have stuff others do not carry. etrailer is good to deal with, and they make things good which fall through the cracks, as things sometimes do. Wrong part or whatever.


Replaced the boat trailer lights and bunk boards, fenders and added a set of guide post and rachet straps, now my boat trailer lights up like achristmas tree and has never been easer to launch and load, thanks etrailer, great products fast shipping and great customer service, accidently ordered the wrong size fenders and the folks at etrailer got me the right ones, fast, easy and couldn't have had a better experience, thanks again


Very nice product


The side marker lights were exactly as described. The look. fit, and install couldn't have been better.

Jeff K.


The trailer lights are still functioning very well.


Excellent replacement for a damaged light on my trailer. Now LED lights are an upgrade from original. Probably not feasible given a variety of applications, but a plug in tip would avoid the need for splicing the wire. Overall, a good product and easy replacement installation.


These Stud Mount LED Clearance lights are what I need for my boat trailer and had them in stock. Mind you they are priced in the "Average " range, but what good is cheaper if they do not have them in stock? I ordered them and they showed up. This I can work with. The service is good............I would give an "Excellent but these lights have a tendency to fail after about two to three seasons no matter how fastidious your installation.


Ordered a spare red marker light to have on hand. Just replaced an amber side light, and planned ahead...... May as well have one of each on hand for...... just in case when the time comes!

These lights are simple to install, and the wire lead is nice and long to make connecting to your trailer harness a breeze.

I will certainly do business with etrailer again in the future!


This single mount side marker was unavailable at all my local parts houses, truck stops, and big chain stores. I needed red, single bolt, surface mount LEDs for my boat trailer to be in compliance with state laws and was frustrated not to find them locally.
I should have started at etrailer to begin my search. The products, the price, and the fast service were all exceptional and the fact that I found them in a long lasting, super bright LED, sealed side marker made my deal super satisfactory!


Nice product. long wiring pigtail of what looks like 18G wire. 3 LED's that are nice and bright and much better than the Wesbar incandescent light it replaced. Enclosure seems to be well sealed but I would have liked it better if the rear face had the wiring enclosed in epoxy. Metric 10mm mounting stud.


Great selection so I was able to find the exact replacement. Pricing was competitive and delivery was as promised. What else can a customer ask for?


You guys are great! I have a pop up tent trailer made in Canada and I was able to find the exact replacement. It was VERY easy to navigate your web site and I was actually able to zoom in and see the numbers thru the plastic lens and it was a perfect match and at a fair price. I bought 4 extra to have on hand. You are my go-to for trailer parts now...thanks


The product we received fits perfectly on our boat trailer. I ordered the item and it didn't know if it would come in time before Christmas so etrailer customer service shipped it out the same day and we received it the day before Christmas. Awesome customer service! I will be ordering all my trailer lights thru them.


This light needs a ground wire. One hot wire is find if your gooing to install this light on a metal trailer, but I hade to install mine on a fiberglass finder. I had to add a ground wire with a ring terminal and run it to the trailer's metal frame!!!

Show More Reviews

See what our Experts say about this Optronics Trailer Lights

  • Can a Stainless Steel Stud be Used as the Ground Stud on Optronics LED Clearance Light
    Using stainless steel instead of regular steel for the stud on clearance light # MCL95RB would be fine. But what you can do to help the ground is attach a wire with ring terminal between the stud and where it makes contact with the trailer frame and then run the other end of that wire to the main trailer connector ground location. And if that doesn't work then there may be something internally wrong with the light.
    view full answer...
  • Replacement Trailer Lights for Shoreland'r Boat Trailer
    For other options we have # MCL95AB for amber lights and # MCL95RB for red. They're still surface mounted lights but the base is included and may work for you. They're also a single wire design so they ground through the mounting hardware. If these will not work for you reply to my email with your pictures and dimensions and I'll see if I can find some that will.
    view full answer...
  • Is There an Amber Version of the Optronics Clearance Light # MCL95RB
    We have an amber version of the # MCL95RB with the part # MCL95AB which would work for what you are looking for.
    view full answer...
  • Is There a Red Clearance Light With the Same Dimensions as the Optronics MCL95AB
    Yes. The Optronics LED Clearance Light # MCL95RB is the red version of the Optronics LED Trailer Light # MCL95AB.
    view full answer...
  • Red Version of Optronics LED Trailer Clearance or Side Marker Light MCL95AB
    We have a version of the # MCL95AB in red with the part # MCL95RB.
    view full answer...
  • Replacement Optronics LED Trailer Marker Lights with Single Mounting Stud
    It sounds like you are looking for the Optronics Sealed, Mini Rectangular LED Trailer Clearance Light # MCL95RB in Red and # MCL95AB for Amber. These sealed, waterproof LED light assemblies measure 2-1/8 inches long and 1-1/8 inches wide. They feature a single mounting stud on the back. These do have a single wire design, as opposed to the 2-wire design you mentioned. This simply means that they will ground through the mounting stud instead of using a dedicated ground wire. I have attached...
    view full answer...
  • Are Mounting Brackets Available for Optronics Mini LED Clearance Lights # MCL95AB and # MCL95RB
    The Optronics Mini Rectangular LED Clearance Lights, # MCL95AB and # MCL95RB, are single stud surface mount lights, so they do not have a grommet or mounting bracket available. They were designed to mount directly to an existing bracket or to the trailer frame. The closest clearance lights that we carry to the dimensions of your current lights are the Optronics Square LED Clearance Light, # MCL36AB and # MCL36RB. These are also single stud surface mount lights, but the larger size should...
    view full answer...
  • Replacement Individual Lights for Light Bar # MCL97RPG
    The individual lights that are on light bar # MCL97RPG are # MCL95RB. I have linked a video review of this light for you.
    view full answer...
  • Should Whole Light Bar # MCL97RPG be Replaced if One Light is Out
    Light # MCL95RB would not fit light bar # MCL97RPG because it does not mount appropriately to attach to the light bar base. If it were me I would replace the hole light bar. Since yours is riveted on those rivets will have to be drilled out and replaced with regular screws or bolts and nuts. All of the 2 x 1 inch lights are stud mount, see link, so keep that in mind when looking for replacements.
    view full answer...
    Image 1 for
  • Which Trailer Lights will Fit a Fulton Fender F008595?
    As I couldn't tell if the lights in the picture are LED or incandescent, I included with both options. For incandescent lights, you will need the Optronics Mini Trailer Clearance or Side Marker Light - Submersible - Incandescent # MC95RB for the red light and # MC95AB for the amber light. For LED lights, you will need the Optronics LED Clearance or Side Marker Light - Submersible - 3 Diodes - Rectangle # MCL95RB for the red light and # MCL95AB for the amber light. All of these lights...
    view full answer...
    Image 1 for
  • Is the STL80RB Optronics Streamline LED Third Brake Trailer Light Available or What Option is There
    I have another option for you, but the STL80RB is no longer available. We do however, have the Optronics Streamline LED Trailer Tail Light # STL79RB which has all of the same measurements as the STL80RB. The difference is that the # STL79RB is a 3-wire design that allows it to be used as a brake, tail, and turn signal. While the STL80RB is a 2-wire design that only operates as a third brake light.
    view full answer...
  • Troubleshooting Trailer Running Lights Not Working
    There are a number of potential issues that could be causing your running lights not to work, but you will have to troubleshoot the problem with some detail. The first thing to do is take a look at your vehicle's owner's manual to locate any trailer fuses or relays and ensure they are all there and in working order. If they are, in order to determine the specific problem you will need to purchase a circuit tester if you do not have one - the very handy Cordless Circuit Tester # PTW2979...
    view full answer...
  • 1141 LED Light for Interior of Horse Trailer
    For a soft white LED that fits a 1141 socket which would work great for interior lighting you would want the part # AR50367. The clearance lights # MCL95RB and # MCL95AB would work great for clearance light replacements as well.
    view full answer...
  • LED Trailer Wiring Recommendation for Boat Trailer that is 24 ft Long
    We have the LED Trailer Light Kit for Trailers Over 80" Wide # TL16RK which would work great on your boat trailer. The LED lights are submersible, it comes with clearance lights, and also it comes with a license plate mounting bracket and the needed wiring as well.
    view full answer...
  • Replacement LED Trailer Tail Lights For Wesbar 102641
    We do have an easy LED replacement for your Wesbar trailer tail lights that use the 102641 lens. Those lights are 8" long with mounting holes that are 2" on center, and for an LED upgrade with the same specs use the following: - Driver Side: Miro-Flex LED Combination Trailer Tail Light # STL27RB - Passenger Side: Miro-Flex LED Combination Trailer Tail Light # STL26RB This will give you nicer, longer-lasting, brighter tail lights for your trailer. As for the clearance lights, that's...
    view full answer...
  • Availability of Clearance Light for Trailer that Uses a Power and a Ground Light
    You could use the part # MCL95RB with a ground wire if you wanted to. All you would need to do is run the ground wire to the mounting stud of the light before you tighten it down. Or the part # MCL13R2B is a somewhat similar light that uses two wire for power and ground. It is also submersible.
    view full answer...
  • After Installing LED Trailer Tail and Clearance Lights Only Turn Signals Work
    It is not likely that the clearance lights, # MCL95RB, are the issue since they ground through the mounting hardware and only have one power wire that goes to the running light circuit. Still it is worth checking to make sure that the grounds are attached to clean and corrosion free bare metal surfaces. On the taillights, # STL70RB, the red wire is for brake lights and turn signal, black is for running lights. And white is the ground. You can't always go by color; you have to go by function....
    view full answer...
  • Options for Replacement Red, LED, Sealed Trailer Clearance Light
    We have couple of different light options for you, but the Optronics Sealed, Mini Rectangular LED Trailer Clearance, Side Marker Light, Ear Mount, 3 Diode - Amber # MCL85AB is not available in red. One red clearance light option we carry is the Optronics Sealed, Mini LED Side Marker, Clearance or Identification Light, 1 Wire, 2 Diode - Red # MCL131R2B. This light measures 2-1/2 inches long x 1-1/16 inches wide x 11/16 inches deep. It mounts at 2 inches, grounds through the mounting hardware,...
    view full answer...
  • One Wire Clearance and Side Marker Light Options to Replace Lights on Horton Hauler Trailer
    We have quite a few different options for trailer clearance lights with one wire and that will ground through the mounting hardware. These lights come in various sizes and shapes. The best replacement for your trailer will depend on the size light you are wanting to replace. For a small LED clearance light that is a stud-mount, you can use the Optronics Sealed Mini Rectangular LED Stud Mount Trailer Clearance Light. For an amber light you will want # MCL95AB and for a red light # MCL95RB....
    view full answer...
  • Bearing Kit for 3,500 lb Trailer Axle and LED Clearance Light for Pace Utility Trailer
    The thickness is right at 1/8 of an inch for the mounting plate of the spare carrier part # FSTC1000301. For the LED version of the light in your picture you would want the part # AL91RB. Or part # MCL95RB for a version of the light that includes a base. The correct bearing kit for a 3,500 lb trailer axle is the part # BK2-100.
    view full answer...
    Image 1 for
  • Replacement LED Trailer Lights for a 2000 Ranger R71 Boat Trailer
    I would love to help you upgrade to LED lights on your trailer but unfortunately, trailer manufacturers don't just give us a list with every light on the trailer for situations like this. If you can provide me with your full 17 digit VIN I would be more than glad to call on your behalf and see if we have the correct replacements for you.
    view full answer...
  • Adding A Third Brake Light To The Truck Cap On A 2021 Chevy Silverado
    The easiest way to get the signal for a third brake light on your truck cap is going to be by tapping into the 7-way.Using a 3rd Brake Light Logic Module # PP20-702 you'll tap into the left and right turn signals of the 7-way with the yellow wires and use the green wire to power the third brake light. The logic module will keep the third brake light from flashing when you apply your turn signals just like a converter. You'll need some extra wire # 12-1-1 and heat shrink butt connectors...
    view full answer...
  • Rewiring Boat Trailer for 7-Way to Use LED Lights
    There are a number of things you will need if you want to re-wire your boat trailer to use LED lights and you should start with Junction Box # 3375601100 and 7-Way # HM20041. Keep in mind you will also need Ring Terminals # 44-5310A and Loom Clamps # A0500 For LED lights I highly recommend checking out the LED Trailer Tail Light # STL57RB (Driver's side) and # STL56RB (Passenger's side). These are submersible lights with a total of 40 diodes and have mounting holes that are 2" center to...
    view full answer...
    Image 1 for
  • Will Adding Optronics LED Backup Light to Kayak Trailer Require Rewiring the Trailer
    It sounds like you are wanting to replace your incandescent backup lights on your kayak trailer with LED lights like the Optronics LED Backup Light for Trucks or Trailers # BUL52CB. If that is the case, all you will need to do is replace the current lights with the LED lights. The # BUL52CB accept the industry standard 2-prong plug like the 2-Wire Pigtail for Optronics Backup and Utility Trailer Lights - 2-Prong PL-3 Plug # A45CB. If you do not have existing lights, then you will have...
    view full answer...

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Info for this part was:

Employee Patrick B
Video Edited:
Patrick B
Employee Michael H
Expert Research:
Michael H
Employee Jameson C
Expert Research:
Jameson C
Employee Laura H
Updated by:
Laura H
Employee Brian T
Updated by:
Brian T
Employee Noah M
Updated by:
Noah M
Employee Cole B
Installed by:
Cole B

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