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

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

Item # MC65ARB
Our Price: $9.43
Trailer Lights
Shipping Weight: 0.06 lbs
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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 or call 1-800-940-8924 for expert service.
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  • Reviews (798)
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Optronics Trailer Lights - MC65ARB

  • Clearance Lights
  • Rectangle
  • Incandescent Light
  • Red and Amber
  • 3-15/16L x 1-1/4W Inch
  • Surface Mount
  • Rear Clearance
  • Submersible Lights
  • Optronics

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.


  • Dual-face incandescent trailer light installs on your trailer fender
    • Amber light faces front of trailer
    • Red light faces rear of trailer
  • Sonically sealed, waterproof unit is submersible
  • Durable polycarbonate housing and lens
  • Red and amber lens over incandescent bulbs
  • Compatible with 12V DC systems
  • Surface mount to trailer with bracket (A65PB or A67BB - sold separately)
  • Accepts industry standard 1-prong plug (A65P - sold separately)
  • P2 rated


  • Dimensions: 3-15/16" wide x 1-1/4" tall x 7/8" thick
  • Distance between mounting holes (center on center): 3"
  • Bulb type: incandescent
  • Power draw at 12.8V: 0.689 amps
  • 3-Year warranty

Manufacturer Cross Reference
Light will work as an exact replacement for:
Peterson # M154A-R

Optronics MC65 Series Fender Light Dimensions

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.

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

Alternate part number: MC-65ARB

California residents: click here

Customer Reviews

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

Average Customer Rating:  4.9 out of 5 stars   (798 Customer Reviews)

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.


Perfect, exact replacement fender lights for my 2007 Pace American motorcycle trailer. Even the DOT numbers on the lens matched the numbers on the original lights that came on the trailer.


Direct replacement and easy installatio n!


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.


Good fit and reasonably priced, thanks


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.


Perfect retrofit for my 15 yr old trail.


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.


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


Received everything I asked for pack nicely in a box


Exactly what I was searching for. Fast shipping and great customer service. Will shop here again for sure!


I consider 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.


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.


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.

Etrailer Expert

Katrina B.


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


Lights arrived on time and replaced ones that were 12 years old. They plugged right in and worked perfectly. I've ordered additional lights to replace others. I will definitely be a return customer for any future needs. Thank you!


Web site easy to use. Items were shipped right away and received them fast. They fit perfectly


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.


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


need to package better both pins were bent, was able to straighten and hope they work will know Saturday when I put on trailer.

Etrailer Expert

Katrina B.


That does not sound good. Once you have this installed, I would love to hear your feedback to see if the lights have worked for you.


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 J.


Still working great, easy to install!


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.




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


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.



works fine, as its supposed to..


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

William K.


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


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.


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!


Poles are too long by 1/


I'm refurbishing an enclosed trailer and etrailer made it super easy. I ordered new fenders, marker lights and replacement ramp hinges. I couldn't be more happy with the quality of the parts, the customer service and the great prices. I almost forgot the free shipping promo! I have seven trailers and etrailer will be my "go to" place for parts and accessories!


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



Its still burning bright

Show More Reviews

See what our Experts say about this Optronics Trailer Lights

  • 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 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...
  • 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...
  • Replacement Mounting Plate for Kaper II Side Marker Lamp 1A-V-1260AR
    I may have a solution for you, but the 1a-v-1260ar part number you've mentioned corresponds to a Kaper II marker lamp, which is a brand that we do not carry. However, it looks like the Optronics Thinline LED Trailer Fender Light for Trailers Over 80" Wide - 10 Diodes - Amber/Red # MCL65ARB is a similar light and the back mounting plate for that MC65 series light is the Black Molded ABS Mounting Bracket for Thin Line Series Clearance, Side Marker Lights # A65B. I've linked a photo of the...
    view full answer...
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  • 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...
  • 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...
  • 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...
  • 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...
  • 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...
  • 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...
  • 5th Wheel Trailer Hitch and Installation Kit for a 2016 Toyota Tundra Long Bed
    Yes, we do have 5th wheel trailer hitch options for your 2016 Toyota Tundra long bed. I have included a link to the options for you. I recommend the Demco HiJacker # DM6076P-21K. This hitch is rated up to 21,000 pounds and fits in industry standard above the bed rails. For the rails and installation kit you can use # DM8552020-71. And to add an in-bed 7-Way trailer connector you can use # 41157. I have linked some videos for the hitch and wiring for you.
    view full answer...

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Info for this part was:

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