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Optronics Thinline LED Trailer Fender Light for Trailers Over 80" Wide - 10 Diodes - Amber/Red
Optronics

Optronics Thinline LED Trailer Fender Light for Trailers Over 80" Wide - 10 Diodes - Amber/Red

Part Number: MCL65ARB
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$9.66
Retail:$29.37
You Save: 67%
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3-15/16" x 1-1/4". Waterproof LED marker light can be installed on your trailer fender. Amber light faces front, and red light faces rear. Surface mount with bracket (not included). Accepts standard 1-prong or 2-prong plug. P2 rated. Great Prices for the best trailer lights from Optronics. Optronics Thinline LED Trailer Fender Light for Trailers Over 80" Wide - 10 Diodes - Amber/Red part number MCL65ARB can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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Optronics Trailer Lights - MCL65ARB

Highlights

  • Bright Marker on Both Ends: Amber faces forward and red faces back for clear visibility.
  • Reliable In Any Weather: Sonically sealed, waterproof housing keeps water out and light working.
  • Slim Fit Anywhere: Thinline 3-15/16" x 1-1/4" x 7/8" design fits tight fender spots.
  • Fewer Replacements Needed: 10 white LEDs last 50 times longer than incandescent bulbs.
  • Low Power Draw: Uses just 0.048 amps at 12.8V for efficient lighting.
  • Easy Wiring Options: Works with standard 1-prong or 2-prong plug for quick connection.

Features to know about

Brighter Fender Lighting for Safer Towing: Dual-Face Amber and Red LEDs

When you want better visibility on both ends of your trailer fender, this Thinline LED light delivers. The amber lens faces forward and the red lens shines to the rear, giving clear signal coverage in each direction. With 10 LEDs behind durable polycarbonate lenses, it provides bright, even illumination while drawing only 0.048 amps at 12.8V. The low-profile 3-15/16" x 1-1/4" x 7/8" design fits tight spaces without sticking out or snagging on anything.

No More Burned-Out Bulbs: Long-Lasting, Efficient LED Performance

Forget about replacing fragile incandescent bulbs. This light uses efficient white LEDs that last up to 50 times longer and don’t change color or dim with age. The LEDs run cooler, use less power, and eliminate brittle filaments that break under vibration or moisture. Once it’s mounted up, it just works—season after season—without wasting battery power or time on maintenance.

Built for Wet Conditions: Sonically Sealed and Submersible Housing

If your trailer sees water, this light is ready for it. The housing and lens are sonically sealed into a single waterproof unit that blocks out dirt and moisture completely. That means it stays leak-free and reliable even when submerged, making it a smart choice for boat trailers or any rig that deals with rain and road spray.

Straightforward Mounting: Surface Installation with Standard Plug Options

Mounting this light is simple thanks to its surface-mount design with 3" center-to-center hole spacing. It accepts standard 1-prong or 2-prong plugs, so wiring is quick and familiar. Pair it with the A65B bracket (sold separately) for a secure fit on metal fenders that ground through mounting hardware. The flexible mounting options make swapping out old units or adding new ones easy and clean.

Focused Illumination Where You Need It: P2-Rated Beam Pattern

The P2 rating means you get a focused beam that spreads 45 degrees to either side of center—for a total of 90 degrees of coverage. That makes it ideal as a clearance or side marker light where directed visibility matters most. When positioned correctly, it gives other drivers a clear line of sight to your trailer’s edges in low light or at night, helping keep you safer on the road.

Specs

Quantity

  • Quantity: 1 fender light

Dimensions

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

Dimensional diagram of Optronics Thinline LED Trailer Fender Light model MCL65ARB showing overall length, height, and 3-inch mounting hole spacing.

Electrical

  • Power draw at 12.8V: 0.048 amps

Lighting

  • Diodes: 10
  • Lifetime warranty: on LEDs

MCL65ARB Optronics Thinline LED Trailer Fender Light for Trailers Over 80" Wide - Submersible - 10 Diodes - Amber/Red Lens

Alternate part number: MCL-65ARB





Customer Satisfaction Score:

Ratings & Reviews

4.9

867 reviews
Review sort icon
3-15/16" x 1-1/4". Waterproof LED marker light can be installed on your trailer fender. Amber light faces front, and red light faces rear. Surface mount with bracket (not included). Accepts standard 1-prong or 2-prong plug. P2 rated.

by:

Easy installment. Best prices! Super br ight!



by:

Product was an exact replacement for a damaged light and it was simply plug and play. The only comment I have is that I missed the fact that this item was only the light and did not included the wired mounting base. I noted that you carry the mount as a separate item but I don't recall a note in this item description that the mount, if needed, was not included and had to be purchased separately. My apologies if I missed that. Perhaps a cross-reference in your catalog to the mounting base would be helpful. Fortunately, my mounting base was okay and the new light plugged in and worked.



by:

This particular LED Light was purchased to replace a previously installed light which broke. While the lights are effective cost wise, they are not especially durable for utility trailer fender applications. I do believe that these lights would be better suited for a van style trailer fender application.



by:

Upgraded all lighting to LED lights on 2006 Haulmark utility trailer. The new LED lighting provides highly visible safety clearance lighting for night and day use. etrailer website is easy to use, my orders were quickly filled and promptly delivered. Good job!



by:

Great replacement parts for my enclosed box trailer that was damaged in the Camp Fire in 2018. The trailer held up pretty well but the marker lights, tail lights and fender lights all melted during the fire. These were perfect replacements and mounted very easily.



by:

This fell off my fender of my horse trailer and the new ordered part fit perfectly! Thanks etrailer!

Jill A. profile picture

Jill A.

7/30/2020

Still working great a year later



by:

Exactly what I received great quality would buy again



by:

Lights were exactly what I needed to lower the total draw from the 15 running lights on my trailer that kept blowing out the fuse on my Honda Pilot. And they are brighter than the old style. Easy to install - just pops right in. Thanks



by:

My truck is grey, my trailer is grey, I replaced all the marker and tail lights on my 09' 7x14 tandem HaulMark with these and now have better visibility during the day. After a year i still am very happy. I noticed the lights are directional, so if your at the side during the day you have to look at them straight on to see if they are working but thats really not an issue. You have markers on all four sides just for that reason as well as reflectors. I have actually gotten unsolicited compliments from other contractors on the trailer since i got these.



by:

Haven't installed them yet, but am pleased with the product. Looks like they will be more visible than the OEM lights. Will edit review once I install and lite 'em up. Thanks etrailer.

Rex H. profile picture

Rex H.

2/20/2018

Happy. Very pleased with the results.



by:

Nice,great price



by:

Not my first order from etrailer and definitely not my last. My only complaint would be in the packing of small or fragile items loosely in a box with heavier items. One of the trailer light mounts was broken when it got here. No other issues though.

Laura E. profile picture
Etrailer Expert

Laura E.

7/15/2017

We do our best to package our orders so that they will arrive to you in good condition. I will send this to our shipping department manager for review.



by:

pics of installation



by:

I purchased these lights for the fenders on my trailer over a year ago. These are not only brighter then my original ones but are also more durable. I travel all over the USA with my trailer and have never had an issue with these lights. I would definitely recommend these to anyone thinking of replacing their lights. This company ships fast as well.

Clifford V. profile picture

Clifford V.

3/8/2019

These lights are great. I highly recommend them



by:

I can see the amber part of the light very well shining in my rear-views in daylight; don't yet know if this will be a distraction at night. Very visible compared to non LED.
This light is made to accommodate a good sized bracket mounting screw under it; if you use a pan head screw you shouldn't have to worry about interference-check first.

Pete profile picture

Pete

2/25/2017

This light is the real deal. Get yourself a pair.



by:

Quick delivery even quicker installation worth every penny



by:

Exact fit for a fender marker light on my Adams horse trailer. Snapped into place easily.



by:

I used this as a direct replacement..fit was perfect.price was perfect...i received them on time..i highly recommend this product and ETRAILER



by:

Optronics makes really good trailer lights. They don't survive me backing my cattle trailer into poles, but that's my issue. My cattle trailer is 20 years old and originally came with old school bulbs. But Optronics makes LED replacements in the same form factor so I have upgraded as I break them. Nice to know I can still get newer LED bulbs for fixtures that are 20 years old. That's what you get with a company like Optronics. And, etrailer has the best technical descriptions and videos available so I know what I'm getting and that they will fit.



by:

Amazing service. Cheap and quick delivery to eastern Canada!



by:

These lights were exactly what I needed, I didn't find them any where else, I have an all Aluminum Trailer and they go on the fenders, as the law requires for trailers over 80" wide.
Thanks for a good product at a good price and very reasonable shipping, I always use the USPS when I can.



by:

Exact replacement for Stealth enclosed trailer.



by:

They work well. Really bight compared to some others I have had.



by:

Took a long time once ordered to the time they sent products out



by:

Marker lights are exactly the right ones for my 2018 Livin Lite Quicksilver 7x20 HJ. Delivery was timely.


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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...
  • Can The Lens Of The Optronics Thinline LED Trailer Fender Light MCL65ARB Be Removed?
    Hey Jesse, cool name! The Optronics Thinline LED Trailer Fender Light # MCL65ARB comes with a fully sealed lens, so it really isn't supposed to come off. There is no good way to get it off without damaging the light. If yours is no longer illuminating, the best option here will be to replace the entire light with a new one. The # MCL65ARB light goes with the # A65B bracket. You can get just the light by itself if you don't need a new bracket. They are sold separately.
    view full answer...
  • Does the Optronics Thinline LED Trailer Fender Light Come with the etrailer Logo on it?
    Hello John, No, the Optronics Thinline LED Trailer Fender Light for Trailers Over 80" Wide - 10 Diodes - Amber/Red # MCL65ARB will not have the etrailer logo on it like you see in the picture. Our photo team only puts the sticker on there when they take the pictures of the products. Unless you really want the logo, I could always go down to photo and mail you a sticker =) What kind of application are you needing the light for?
    view full answer...
  • Wiring a 2011 Victory Motorcycle and Trailer for Towing
    For simplicity, I would recommend wiring the motorcycle trailer as a vehicle trailer would be. A powered converter wiring kit, like part # C59496, would be connected to the motorcycle, which would provide a 4-pole trailer connector. The converter combines the brake lamp and the directional signal onto one circuit. The 4-pole connector utilizes four circuits, the white wire which is the ground, the green wire carries the right turn and brake light combined on one circuit, the yellow wire...
    view full answer...
    Image 1 for
  • 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...
    Image 1 for
  • LED Replacements for Trailer Clearance Light Part 154A-R and PM-102
    The closest LED replacement we have for the Trailer Clearance Light part 154A-R is the Thin Line LED Fender Clearance Light part # MCL65ARB. This light has both a red/amber lens, 10 diodes, and measures 3-15/16" long x 1-1/4" wide x 7/8" tall. For a direct fit bracket/harness you will need to use the Black Bracket and Single Wire Plug part # A65PB. The closest LED replacement we have for the Trailer Clearance Light part PM-102 is the Round Marker / Clearance Light part # MCL0039ABB. This...
    view full answer...
  • Fender Clearance Light Replacement for 2010 Cimarron Horse Trailer Norstar VP 3H GN
    Yes, the light part # MCL65ARB is the correct replacement for what you sent in a picture of on your horse trailer. The mounting bracket in the picture is the same as the part # A65PB so it's a match.
    view full answer...
    Image 1 for
  • Is Bargman 40-40-104 Fender Mount Red/Amber Clearance Light Submersible
    The Bargman Fender Clearance/Side Incandescent Marker Light # 40-40-104 is not rated as a submersible light. But we do have combination red/amber lights that are submersible and you can see all of these on the linked page. These include fender-mount lights like # MCL65ARB and both incandescent and high-efficiency LED versions. You might care to refer to the linked article on trailer lighting requirements.
    view full answer...
  • Is Optronics Sealed, Thin Line LED Light # MCL65ARB Interchangeable Without Wiring Changes
    The Optronics Sealed, Thin Line LED Light # MCL65ARB with a sonically-sealed, waterproof lens in a single-unit housing can be used for both the right or left fender without changing the wires. However, to use the LED trailer light # MCL65ARB, you will need the Optronics Black Bracket and Single Wire Plug # A65PB. The kit combines a black molded ABS, surface mount bracket and a molded plastic, single-wire plug and its single-wire design grounds through mounting hardware. This item will...
    view full answer...
  • Recommended LED Trailer Lighting For Over 80 Inch Wide EZ Loader Boat Trailer
    For your trailer wiring, I recommend the Submersible LED Trailer Light Kit w 25' Wiring Harness # TL16RK along with the Identification Light Kit for Trailers over 80" Wide - Submersible - 3 LEDs - Red # MCL22RK3B. I recommend the Sealed, Thin Line LED Fender Clearance Light for Trailers Over 80" Wide, 10 Diode - Amber / Red # MCL65ARB for your fender lights.
    view full answer...
  • Availability Of Red LED Clearance Light Comparable To Optronics MCL0039ABB
    I have a replacement light option for you, but there is not a red version of the now discontinued LED Clearance or Side Marker Light with Reflector - Submersible - 1 Diode - Round - Amber Lens MCL0039ABB available. The closest option is the LED Trailer Clearance and Side Marker Light with Reflex Reflector - 2 Diodes - Red Lens # 328-K-500B which is still 2-1/2" in diameter, but has a different mounting pattern. This light has a 3 bolt pattern with 1-5/8" between the holes as shown in the...
    view full answer...
    Image 1 for
  • How To Attach the Black Molded Fender Bracket A67BB
    In order to attach the Black Molded Fender Bracket part # A67BB I recommend using the Self-Tapping Phillips Head Screw part # 1131832 because the head will sit closer to the base and will allow for the Optronics Thinline LED Trailer Fender Light part # MCL65ARB to sit flush. The Black Molded Fender Bracket we offer grounds via the mounting hardware so a ground wire is not present but if you have a version of this bracket that does have a ground wire then you can just snip this and tape...
    view full answer...
  • Recommended Replacement for Optronics MCL61ARB
    I have some good news, we carry the Optronics Thinline LED Trailer Fender Light - Submersible - 2 Diodes - Red/Amber Lens # MCL61ARB. This should be the exact same light you have so it is the perfect replacement.
    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...
  • Recommended LED Clearance Light that is Red and Amber
    The Optronics LED clearance light that is similar to # MC65RB, but will be amber and red, is the Optronics LED clearance light # MCL65ARB. This light is sealed, waterproof and is a surface mount. The dimensions are 3-15/16 inch length by 1-1/4 inch width by 7/8 inch deep. You will need a bracket and plug like # A65PB to complete the installation of the Optronics LED trailer light # MCL65ARB. Another option you may like is the LED clearance/marker light with a bracket and wire # 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...
  • Replacement Rectangular LED Light Combination Amber/Red
    I have a couple options for you that are going to be a close match to the Peterson Piranha LED Clearance Light # M161R . # MCL65ARB is 3-15/16" long and a 10 diode LED light that is amber on the left and red on the right. This is a surface mount light and does not come with a mounting bracket. # MCL67ARB is the same light that comes with a mounting bracket included. If you were looking for a 2 diode light you can use # MCL61ARB which does not come with a mounting bracket. If you're looking...
    view full answer...
  • Is Mounting Hardware Included with Optronics Trailer Light Mounting Bracket # A67BB
    The mounting hardware is not included with mounting bracket # A67BB. I recommend using screws because with rivets, if you have to remove the bracket for some reason, you may need to drill out the rivets. Screws are much easier to work with. Using steel for a good ground is recommended.
    view full answer...
  • Chrome Base Recommendation for Optronics Thinline LED Trailer Fender Light # MCL65ARB
    Yes, we have a chrome bass for the # MCL65ARB as the part # A67CB.
    view full answer...
  • Trailer Fender Clearance Light Recommendation
    Yes there is a base that comes with the trailer originally that the discontinued Bargman Trailer Fender Light part 40-40-104 is designed to fit into. On new installations you would add the base but it is not something we stock. Instead the Optronics Thinline LED Trailer Fender Light for Trailers Over 80" Wide part # MCL65ARB and Black Bracket and Single Wire Plug for Thin Line Series Trailer Clearance and Side Marker Lights part # A65PB will make a complete installation kit for you. Check...
    view full answer...
  • Fender Bracket for Optronics Thinline LED Trailer Light # MCL65ARB
    For the black molded fender bracket that works with the Optronics Thinline LED Trailer Light # MCL65ARB you will need the part # A67BB, which is indeed sold separately. This bracket includes the lead wire for power. If you are just needing the standard surface-mount bracket you can use part # A65B for just the bracket itself or # A65PB for the bracket and wire.
    view full answer...
  • Replacement Bracket for Optronics Thinline LED Fender Light
    I believe you are just needing the wired bracket for your Optronics Thinline LED # MCL65ARB, which can be found with part # A65PB. I have attached a short video review on this component that you can check out as well. If this isn't what you're referring to please let me know and I will be happy to look into this further.
    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...


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