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Optronics Incandescent Trailer Fender Light - Submersible - 2 Bulbs - Red/Amber Lens
Optronics

Optronics Incandescent Trailer Fender Light - Submersible - 2 Bulbs - Red/Amber Lens

Part Number: MC65ARB
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$5.17
Retail:$23.72
You Save: 78%
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3-15/16" x 1-1/4". Waterproof, incandescent trailer marker light mounts on your trailer fender. Amber light faces front, and red light faces rear. Mounts to trailer with bracket (sold separately). Accepts 1-prong or 2-prong plug. P2 rated. Great Prices for the best trailer lights from Optronics. Optronics Incandescent Trailer Fender Light - Submersible - 2 Bulbs - Red/Amber Lens part number MC65ARB can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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  • Reviews (1062)
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Optronics Trailer Lights - MC65ARB

Highlights

  • Two Lights in One: Amber faces front and red faces rear for full fender coverage.
  • Reliable in Any Weather: Sonically sealed, waterproof housing stays dry even when submerged.
  • Exact Replacement Fit: Matches Peterson #M154A-R for easy swap with no drilling.
  • Simple Wiring Options: Accepts industry-standard 1- or 2-prong plug for quick hookup.
  • Compact Size, Big Visibility: 3-15/16"x1-1/4"x7/8" design meets P2 rating for clear light spread.
  • Durable Build: Polycarbonate lens and housing resist cracks and moisture for long service.

Features to know about

Reliable Fender Lighting in a Compact Package: Dual-Face Incandescent Design

This 3-15/16" x 1-1/4" Optronics fender light makes it easy to stay visible from both directions. Its dual-face design uses an amber lens to the front and a red lens to the rear, giving clear signals on each side of your trailer. The incandescent bulbs provide consistent illumination for dependable performance. It runs on standard 12V DC power and draws 0.689 amps at 12.8V, so it integrates easily into typical trailer light circuits.

Built to Handle the Elements: Sonically Sealed and Submersible

When you’re dealing with wet roads or launching near water, this sealed light keeps moisture out. The polycarbonate housing and lens are sonically sealed into one waterproof unit, making it fully submersible. That means no water getting in and no shorting out your bulbs or wiring—just steady light you can count on even in rough conditions.

Simple Installation and Solid Compatibility: Surface-Mount Setup

Mounting this light is straightforward. It’s designed for surface installation using a bracket (sold separately) like the A65PB or A67BB, with 3" center-to-center holes for secure placement. The light accepts a standard 1-prong or 2-prong plug, so wiring is quick and familiar. Replacement is just as easy since it’s a direct swap for Peterson # M154A-R.

Focused Visibility Where You Need It: P2-Rated Beam Spread

The P2 rating means this light casts a 45-degree beam to either side for a total of 90 degrees of coverage. That pattern makes it ideal as a clearance or marker light—bright enough to be seen head-on while keeping your lighting setup compliant and effective on the road.

Specs

Dimensions

  • Overall dimensions: 3-15/16" wide x 1-1/4" tall x 7/8" thick
  • Distance between mounting holes (center on center): 3"

Dimension diagram of Optronics MC65 Series submersible incandescent trailer fender light showing red and amber lenses with measurements for width, height, and mounting hole spacing.

Electrical

  • Bulb type: incandescent
  • Power draw at 12.8V: 0.689 amps

Warranty

  • Warranty: 3-Year warranty

MC65ARB Optronics Incandescent Trailer Fender Light - Submersible - 2 Bulbs - Red/Amber Lens

Alternate part number: MC-65ARB





Customer Satisfaction Score:

Ratings & Reviews

4.9

1062 reviews
Review sort icon
3-15/16" x 1-1/4". Waterproof, incandescent trailer marker light mounts on your trailer fender. Amber light faces front, and red light faces rear. Mounts to trailer with bracket (sold separately). Accepts 1-prong or 2-prong plug. P2 rated.

by:

Delivery from Utah to Ontario, Canada was relatively quick. Item was well packaged and protected. Item was as described



by:

These were purchased for my flat bed trailer.They are just fine.

Mike profile picture

Mike

5/30/2017

Very well



by:

Ordered the lights and received them with in a week.
They fit perfect with the existing mounts on the trailer.
Job well done.
Thank you

Tr profile picture

Tr

7/22/2016

Its still burning bright



by:

Couldn't find the correct lights to replace broken ones on my trailer in any of the box stores. These guys had it, at a terrific price, and delivered it right away. Will definitely shop here again.

Greg A. profile picture

Greg A.

7/26/2018

Great product! Exactly what I needed. Still going strong. Highly recommend this company.



by:

Great Poduct, Fast Delivery



by:

I rewired an old LL horse trailer and use this side marker/base combination light to bring the lighting up to Oregon specifications. Easy to install and the lights work great.



by:

Exactly what i needed! So glad I found etrailer. Not that I mind using dealers and repair shops on occasion, but I also prefer to save money on those projects that i can take on myself. The fender lights were a perfect replacement and a quality product. Fast shipping was appreciated!



by:

I haven't installed my product, but I'm sure it will be fine, thanks to the customer service I received prior to my purchase. I know etrailer has my back.

Manuel E. profile picture

Manuel E.

2/23/2018

Still happy with my purchase



by:

Ordered two of these for my boat trailer. Shipping was quick. Was exact match to what I had and plugged right in.

William K. profile picture

William K.

8/21/2020

Still working after a year holding up good to gravel road bumps. Would buy again.



by:

I purchased a trailer running light to replace a broken one. The product was exactly as advertised (great detailed photography) and was an identical replacement of what I had. All went well. Great service, great product.

Thanks,
RCK

Rockne profile picture

Rockne

11/29/2018

Light still working well. I only use the trailer a few times per year, but so far so good.



by:

I was disappointed that the light didn't perform as promised. the lights are both on with marker lights, but blinkers do not function as previous lights did. Before I ordered these lights, I inquired as to their ability to do so. I was told that they were. I had previously purchased others at a local store, and they did not function properly, so I purchased these (unnecessarily), since they do not work as I expected them to.

Katrina B. profile picture

Katrina B.

4/11/2022

We do not have split function blinkers but we do have part # M353R and part # M353A that have the turn signal functions as well.



by:

As ordered, as described. Received promptly. I had problems trying to get this dual-color replacement light at several RV, hardware and truck stop locations, but these guys had it.

James profile picture

James

6/9/2020

works fine, as its supposed to..



by:

Ordered replacement lights for my trailer, got them when they said I would. Easy to install, the videos that they have online are great. I think that there is a video for everything that they have.
Light are working great.
Gene

Gene J. profile picture

Gene J.

11/30/2017

Still working great, easy to install!



by:

these lenses were replacements for our trailer fender lights. Snapped right in



by:

These are easy to install and are very economical, and just have a nicer appearance compared to the dead ones I am replacing. The only concern I have is that these lenses simply snap into place on the base, as opposed to screwing onto the base like the old ones I'm replacing. Since this is a snowmobile trailer it gets exposed to all kinds of snow, ice, and slush. Hopefully they withstand the flying mixture of slop on the roads, as well as me brushing off the snow, etc. As with my previous purchases from e-trailer I was very happy with price, value, and shipping time. Thanks again!

Jerry P. profile picture

Jerry P.

1/22/2015

My concerns about the lens possibly popping off due to harsh conditions were unfounded. They are still working great.



by:

I consider etrailer.com to be an excellent place to make a purchase. They processed and shipped my order fast; I don't recall exactly but I received the part in 3-4 days. This light is exactly what I needed for my 2013 Wells Cargo FT 8x12ft marker light on the fender. I will not hesitate to order again and will recommend this site to all my friends. My big reason for ordering from etrailer is the shipping cost; their charge is reasonable as opposed to Wells Cargo which was outrageous.

Steve L. profile picture

Steve L.

6/3/2015

The light is working fine. I liked the priceservice etrailer provided and will make your site my first stop when looking for trailer parts or accessories.



by:

I had doubts that I would find these double lenses for my dump trailer! I was so happy to find them I ordered 4 of them !



by:

Can't go wrong with optronics. This is a perfect fender light



by:

Recieved product today...incredibly fast delivery! These were replacement fender lights for my tear-drop trailer. Exact fit, easy install and I'm on the road again. Picture doesn't do justice to the product.



by:

Excellent product, replaced the light and lens that was damaged on my trailer when a tire blow out caused excessive vibration to the fender which in turn caused the light to pop loose and then damaged when it landed on the highway at 70 mph.



by:

Great customer service and fast shippin g!



by:

Easy to order. Fast delivery. Easy to install and works like they should. Thank you.



by:

Knowing that a Black trailer would be hard 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.



by:

Exact replacement for the dead lights on our 20+ yr old trailer, quick and easy swap.



by:

Exact replacement for my Aluma trailer light. Fits and works as it should.


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See what our Experts say about this Optronics Trailer Lights

  • Availability of Dual Color Fender Lights
    Hey Derrick, I will definitely pass that along and see if they will add it to the filter. Did you find the lights you needed? If you're still looking we have the following available: -Optronics Thinline LED Trailer Fender Light w/ Bracket - Submersible - Amber/Red Lens # MCL67ARB -Incandescent Trailer Fender Light w/ Reflector - Red/Amber Lens - # BA44FNL (Driver) # BA44FNR (Passenger) -LED Trailer Fender Light w/ Mounting Bracket - Waterproof - 2 Diodes - Amber/Red Lens # OPT49FR -TecNiq...
    view full answer...
  • Replacement Fender Light With Part Number 1A-V-1260AR
    Hey, Bill! I did some searching about the light that you currently have. Part number 1A-V-1260AR is a Kaper II light, unfortunately we don't carry that brand of light. The Peterson light part # 2637R would be a comparable light. We don't have a way to confirm if it will fit in your existing mounting bracket so you may need to get a new one. Which will be part # B154-11. The size of the Peterson mounting bracket is very similar in size and the mounting holes are 3" apart. I wasn't able...
    view full answer...
  • Replacement Trailer Clearance Light for a Kll 1A-V-1260AB
    I looked up the trailer light you listed and the exact replacement that we carry would be the part # MC65ARB. This light uses the part # A65PB as a mount so the part # MCL61ARB should work as a replacement for you as well.
    view full answer...
  • Replacement Trailer Clearance Light for a Haulmark Trailer
    You will have to look at the original light to determine the manufacturer and model number. If it is listed on the light it will be on the light housing somewhere (not the lens). If it is not, then you have to go by the measurements of the light. This light measures 3/15/16 inches long, 1-1/4 inches tall, and 7/8 inches deep. It is an exact replacement for Peterson light M154A-R.
    view full answer...
  • How to Replace Bulb on Burned Out Running Light on CM Horse Trailer
    The Optronics Thin Line Fender Clearance Light, # MC65ARB, is a sealed light meaning the lens cannot be removed from the light assembly to replace the bulb. The entire unit must be replaced. If the running light on your trailer is sealed, then you must replace the entire light. You can probably see a faint line of glue between the base of the light and the lens. If your light is not sealed, then the lens probably attaches to the light assembly with screws or it snaps on. If you remove...
    view full answer...
  • Replacement for Haulmark # 900200 Fender Marker Light on 10 x 5 Enclosed Trailer
    Although I don't have any reference information that would tell me the part or crossover number for a lamp on your Haulmark trailer, I found online that the # MC65ARB you referenced would be an identical replacement. To be sure, take a quick measurement of the existing lamp on the other side. If it measures 3-15/16 inches long by 1-1/4 inches wide by 7/8 of an inch tall when laid on the base, you're good to go. You might consider getting the # A65PB, # A67CB or the # A67BB base, they're...
    view full answer...
  • Clearance Light Recommendation that are 3-7/8 inch x 1-1/4 inch x 7/8 inch
    I believe the Clearance Light part # MC65RB would be the correct light for you. The difference in length is about .1 of an inch which would be close enough. Especially since these look exactly like what you have and the other dimensions match up. The amber version of this is part # MC65AB. Fort the amber/red version you would want # MC65ARB.
    view full answer...
  • Fender Light Bracket Recommendation for Cargo Mate Box Trailer
    For the Black Molded Fender Bracket # A67BB that you referenced the correct light assemblies have both an amber and a red light on them since one side will be for the front (amber) and the other side of the light will face the rear (red). The two options are part number # MC65ARB for an incandescent bulb and # MCL65ARB for an LED. This setup can be made to fit nearly all fenders so it would work well for you.
    view full answer...
  • Availability Of Optronics Thinline LED Trailer Fender Light MCL67ARB
    Good morning Jeff, we have exactly what you are looking for. Take a look at the following: Optronics Thinline LED Trailer Fender Light w/ Bracket - Submersible - 10 Diodes - Amber/Red Lens # MCL67ARB
    view full answer...
  • Does Optronics Black Molded Fender Bracket # A67BB Come with 1 or 2 Brackets
    The fender bracket, # A67BB, is sold in quantities of 1. It is designed for use with Optronics lights # MC65ARB or # MCL65ARB.
    view full answer...
  • How To Mount Optronics Trailer Clearance Light # MC65ARB To Trailer
    To mount the Optronics Trailer Clearance Light, part # MC65ARB, you will need to use a mounting bracket. There are 2 brackets available that will fit this light, the only difference between brackets is the color, one is black, one is chrome. For the black mounting bracket, Optronics Bracket, part # A65PB. If you prefer chrome, we have the Optronics Bracket, part # A67CB. You will need to supply screws to mount the light brackets.
    view full answer...
  • Are Optronics Fender Clearance Lights MCL65ARB and MC65ARB the Same Size
    Yes, the two Optronics lights you referenced, # MCL65ARB and # MC65ARB, are LED and standard incandescent versions of the same Thin Line fender clearance light. Both install with 3-inch mounting hole spacing and both measure 3-15/16 L x 1-1/4 W x 7/8 D. LED lights offer the advantages of needing less power, not requiring routine bulb replacement and generating less waste heat. They also do not tend to change color (becoming yellow over time) the way incandescent bulbs do.
    view full answer...
  • Attaching Some Lights On Trailer Causing Other Lights To Stop Working
    It sounds like there's a possibility you are overloading the circuit, and that could be causing the issue. Or there may be a short in the lights on the fender of your trailer, or in the taillight circuit which is attached to the brown wire on the wiring harness. You will want to make sure you are using the correct wire gauge when wiring the trailer. If possible, I recommend using the heavier gauge wire so that you are sure it can handle the load. The first thing I recommend is to test...
    view full answer...
  • Availability of Optronics Clearance/Marker Light Kit # MC67ARBP for Horse Trailer
    We do offer the lamp in question, part # MC65ARB. Optronics sells the item as a set including the bracket and wire pigtail as part MCL67ARBP, but we sell the items separately. The bracket/pigtail combo is available as part # A65PB.
    view full answer...

Do you have a question about this Trailer Light?


Info for this part was:

Employee Mike L
Expert Research:
Mike L
Employee Michael H
Expert Research:
Michael H
Employee Reno H
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Reno H
Employee John H
Expert Research:
John H
Employee Andrew K
Video by:
Andrew K
Employee Kathleen M
Video by:
Kathleen M
Employee Dustin K
Video by:
Dustin K
Employee Jacob T
Video Edited:
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Employee Cole B
Installed by:
Cole B
Employee Shane T
Installed by:
Shane T
Employee Hayden R
Installed by:
Hayden R
Employee Brian T
Updated by:
Brian T

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