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Optronics

Optronics Incandescent Trailer Clearance and Side Marker Light - Submersible - 2 Bulbs - Amber Lens

Part Number: MC65AB

2623 Reviews | 15 Questions

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optronics trailer lights clearance 3-15/16l x 1-1/4w inch

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optronics trailer lights submersible 3-15/16l x 1-1/4w inch mc65ab

optronics trailer lights clearance 3-15/16l x 1-1/4w inch incandescent and side marker light - submersible 2 bulbs amber lens

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Optronics Sealed Thin Line Two-Bulb Trailer Clearance Light Installation

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3-15/16" x 1-1/4" Rectangle. Waterproof, incandescent trailer light serves as a side marker or clearance light when properly mounted. Durable polycarbonate housing and lens. Surface mount to trailer with bracket. PC rated. 2 bulbs. Great Prices for the best trailer lights from Optronics. Optronics Incandescent Trailer Clearance and Side Marker Light - Submersible - 2 Bulbs - Amber Lens part number MC65AB can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.

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Optronics Trailer Lights - MC65AB

Highlights

Bright, Visible Marking: Two incandescent bulbs deliver clear amber light for easy trailer visibility.
Reliable In Any Weather: Sonically sealed, waterproof housing keeps water out for submersible use.
Dual Purpose Coverage: PC rating provides 180° light spread for clearance and side marker functions.
Simple Power Setup: Works on 12V DC with single-wire connection through mounting bracket ground.
Tough Build: Durable polycarbonate lens and housing resist damage from road debris.
Exact Replacement Fit: 3-15/16" x 1-1/4" size matches multiple brands for quick OEM-style install.

Features to know about

Reliable Illumination in Any Condition: Submersible, Sealed Design

Water and weather are no match for this rectangular trailer light. The housing and lens are sonically sealed into one waterproof unit, making it fully submersible and safe to use even on trailers that hit the water. You won’t have to worry about moisture creeping in or shorting out your light—the sealed construction keeps the 2 incandescent bulbs protected and shining bright every time.

Versatile Visibility for Safety: PC-Rated 180° Coverage

When you’re hauling at night or in low visibility conditions, this light’s PC rating gives you wide-angle coverage for safety. It puts out a 90-degree beam to each side of center for a full 180 degrees of light spread. That means it can work as both a clearance and a side marker light when properly mounted, making your trailer more visible from multiple angles.

Simple and Solid Mounting: Surface Mount with Standard Bracket

Installation is straightforward thanks to its surface-mount design and compatibility with standard Optronics brackets like the A65B (sold separately). The bracket uses a single wire for power and grounds through the mounting hardware when attached to the trailer frame—no extra wiring needed. Once mounted, the 3-15/16" long by 1-1/4" tall by 7/8" deep light stays secure and low-profile, keeping your setup clean and functional.

Durable Build That Lasts: Polycarbonate Housing and Lens

Built tough with a polycarbonate housing and amber lens, this light holds up to bumps, weather, and regular use on the road. The 2 incandescent bulbs inside deliver bright output at 12V DC while drawing just 0.6 amps at 12.8 volts. DOT compliance ensures it meets road safety standards, and with its dependable construction, it’s a practical choice for long-term reliability.

Specs

Dimensions

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

Dimensional drawing of Optronics MC65AB rectangular amber trailer clearance and side marker light showing measurements and mounting hole spacing for installation

Electrical

Bulb type: Incandescent
Number of bulbs: 2
Compatible voltage: 12V DC electrical systems

Compliance and Ratings

PC rated
DOT compliant

Diagram showing 180-degree beam spread of a PC-rated trailer light illustrating 90-degree illumination to each side of centerline

Warranty

Warranty: 3-Year

Manufacturer Cross Reference

Uni Bond #: SE1040A
Wesbar #: 221901
Truck Lite #: 19200Y
Grote #: 46743
Peterson #: 154A
Bargman #: 40-38-002

MC65AB Optronics Incandescent Trailer Clearance and Side Marker Light - Submersible - 2 Bulbs - Amber Lens - PC Rated

Alternate part number: MC-65AB

Customer Satisfaction Score:

100% were satisfied with this product

0% of customers were not satisfied

Arrived Damaged

0% of customers were not satisfied

Arrived Damaged

4.9

2623 reviews

5 Stars		(2383)
4 Stars		(180)
3 Stars		(34)
2 Stars		(10)
1 Star		(16)

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.

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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: 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.

Click to Enlarge

by: Joe 09/06/2026

As described

by: Roger D. 08/25/2017

Excellent service, speedy delivery and perfect look and fit as original. Advised of order placement and shipping status. This is the third order I have placed and each has been clean and easy. I will continue to do business with etrailer in the future.
Roger D.

Click to Enlarge

by: David 08/13/2026

Perfect fit, just like OEM

by: Jim K 02/26/2020 One Year Later

I bought these incandescent for my leeisurelite trailer so i could stop hyperflashing. My trailer worked o k on 2014 limited but not 2017 cvo limited. When u have a cvo the bcm is totally different. Badlands and custom dynamic don't have a load equilizer for cvo. I put these lights on the front of my trailer and didn't have a problem. I couldn't put a Universal 5.6 Ohm Turn Signal Load Equalizer for Harley-Davidson® because they heat up. I couldn't put it inside the trailer (heat)or the outside because not waterproof. The incandescent lights work. Cheap and the easiest fix. I also had a isolator harness.

Jim K. One Year Later

2/27/2021

O K no problems

by: Theresa 08/07/2025

These match the lights I am replacing exactly. I have always used etrailer for my trailer parts.

by: Al M. 08/19/2016

My Jetski trailer had a clearance light that was knocked off before I bought it. It's always bothered me and I finally bought this one to replace original, no longer available. It fit fine and covered existing holes. I had to drill a hole in the frame behind the light to allow the two pins to enter the frame itself and connect to existing wiring. I bought two in case I decide to change out the other one on the other side of trailer so they match but, since you can't see both at the same time, I'm OK with it for now. Looks good.

Al M. One Year Later

8/19/2017

My new LED light is still functioning. Looks good. I still havent replaced the old incandescent one on other side

by: Kenny 07/28/2025

Perfect! Just what I wanted and fast shipping! Thank you!

by: It fits. 11/07/2016

This trailer light bulb fits my existing Peterson 154A trailer light. And shipping from etrailer was fast, convenient and cheap.

It F. One Year Later

11/7/2017

Products are still functioning. It is incandescent, so it matches my other lights in brightness and looks.

by: Roxie 06/28/2015

Great price. Fast service. My go to place for trailer lights!

Roxie One Year Later

6/27/2016

Still great!

by: Steve 04/27/2022

These are a direct replacement for my haulmark car trailer. The lights work great and I decided to order an extra set and a mounting bracket in case one breaks while on the road. Just take your time when replacing the lights to avoid breaking the retaining clips.

by: Bill H. 05/31/2011

the side marker lights very easy to install. The only problem? They're brighter than every other light on my 1983 Coleman Columbia camper. I'm thinking about replacing the rest with e-trailer lights! And the service was first-rate... Not always the case with e-commerce outfits.

by: Tom H. 10/30/2014

Ordered this item on a Tuesday and by the following Monday I had it. Was anxiously awaiting it to arrive. Because I needed it ASAP to repair my trailer clearance lights so I could cover my trailer for the winter. I tried getting this item from the dealer (who I found out was no longer in business) and I also tried getting it from the trailer manufacturer. It took the manufacturer almost a week to get back with me. With a price that was much higher than etrailer.com. Sorry, didn't have time to take any pictures; had to cover the trailer up with a RV Trailer Cover before bad weather.

by: Rick M. 09/12/2014

Well you would think that trailer lights would be pretty common in most stores. NOT! Especially the half lights of red/amber running lights.
When I found etrailer on the net it was a refresher to see so many lights and to actually have the ones I needed.
Kudos to etrailer. Will be shopping with you folks from now on with any of my trailer light needs.
Thanks
Rick

by: Frank S 05/19/2017 One Year Later

Everything is good except 3 of the Amber led marker lights went out after about 4 months.
Had to replace them.

by: Jason 06/18/2019

Unusually responsive company. My initial order came in several days before it was expected. I received emails at shipment, and again after delivery. One of the lights I received was only partially working. Instead of calling the company, I just responded to their email and explained it. They immediately sent me a replacement light and it arrived within two days. Customer service of this caliber is all too uncommon these days. I plan on using this company for all my trailer needs. No kidding, they have the lowest prices and the best customer service I have experienced in a long, long time.

by: Paul Smith 04/17/2017 One Year Later

I have used several parts from etrailer over the years, and have never had any problem. they handle only the best quality and I can get hard to find products sent quickly and easily right to my house. I could not recommend a company more highly than etrailer.

by: Ralph L. 10/18/2014

The running lights I ordered for my trailer snapped right into place. I placed the order and it was filled that day and sent out to my address also Etrailer helped me with the shipping cost. Will definitely order from them again. Best of all they beat everyone else's price.

by: Dan C. 03/27/2014

etrailer,

Ordered for my boat trailer.Purchased lights both last
year and this year.No compaints,Fit good and can;t beat
the price.

Dan C.

by: Jack B. 06/10/2015

Perfect fit, No more white fades marker lights.
Thanks

Jack B. One Year Later

6/9/2016

Just like it should.

by: Benjamin 04/11/2019

We were delighted to have received our lights. However we over looked that they did not come with the mounting brackets. Would you be able to help or point me in the right direction.

by: Michael A 08/26/2013

All ordered pieces arrived in perfect condition and in good time. The immediately needed light is already installed and the others are in hand for future use.

Michael A. One Year Later

8/26/2014

working well as I expected.

by: Don 09/27/2018

I was pleased to see that these lights were still available. My trailer is 13 years old. I really didn't want to have to change all the clearance lights to have them match. Very reasonably priced and quick delivery.

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Mounting Bracket Options for Optronics Sealed, Thin Line Clearance Side Marker Light # MC65AB
There are five mounting brackets available that fit the Optronics Trailer Clearance Side Marker Light # MC65AB. These three are all black plastic. They are Optronics # A65PBPG, # A65PB and # A65B. The first two come with a single wire, the differentiating factor is the # A65PBPG comes with a plug-n-go male connector whereas the # A65PB is intended to be hardwired. The third one, # A65B is the bracket without the wires. If you would rather have a chrome colored plastic bracket, Optronics...
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Will Optronics Clearance and Side Marker Light # MC65AB Replace a Light Marked SAEP2P3PC29T
To order trailer lights you will want to order by part number on your lights or by the size of the light you will need. The SAE stands for the Society of Automotive Engineers. The SAE part number is not the part number of the light, it is just a number on the lens that means that lens has passed SAE guidelines. These part numbers are usually on the lenses of most all trailer lights. You will want to get a brand name (Bargman, Peterson, Wesbar) and the part number (40-38-001, 154R, 221902)...
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Is A Mounting Bracket And Wiring Needed For The Optronics Trailer Light # MC65AB
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Is Sealed, Thin Line Two-Bulb Trailer Clearance, Side Marker Light Available as an LED
Yes, there is an LED version. You will need the Thin Line LED Trailer Light, # MCL65AB. I have included a link to a video review of this light for you. To mount the light, you will also need a bracket like # A65PB for black or # A67CB for chrome.
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Availability of LED Replacement for Trailer Clearance Light Part # MC65AB
The LED equivalent to the # MC65AB you mentioned is part # MCL75AB. We also offer the mounting bracket, which is available in black, part # A65PB or chrome, part # A67CB. To view a product demonstration video of the Optronics LED Clearance Light, click on the provided link.
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