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

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

Item # MC65RB
Our Price: $4.46
Trailer Lights
Shipping Weight: 0.06 lbs
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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 - Red Lens part number MC65RB can be ordered online at or call 1-800-940-8924 for expert service.
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Optronics Trailer Lights - MC65RB

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

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.


  • Rectangular trailer light functions as either a side marker or clearance light when properly mounted
  • Sonically sealed, waterproof housing and lens unit is submersible
  • 2 Incandescent bulbs can be easily replaced
  • Durable polycarbonate housing and lens
  • Red snap-on lens over incandescent bulb
  • Compatible with 12V DC electrical systems
  • Surface mount to trailer with bracket (A65B - sold separately)
  • Accepts industry standard 1-prong or 2-prong plugs
  • DOT compliant
  • PC rated


  • Overall dimensions: 3-15/16" long x 1-1/4" tall x 7/8" deep
  • Distance between mounting holes (center on center): 3"
  • Bulb type: incandescent
  • Number of bulbs: 2
  • 3-Year warranty

Manufacturer Cross Reference
Light will work as an exact replacement for:
Uni Bond # SE1040R
Wesbar # 221902
Truck Lite # 19200R
Grote # 46742
Peterson # 154R
Bargman # 40-38-001

Optronics MC67 Series Red Sealed Marker Clearance Trailer 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.

PC-Rated Lights

Diagram of light spread for PC rated light

A PC-rated light produces a 90-degree angle of light to either side of its centerline for a total of 180 degrees of coverage. This beam pattern can be clearly seen when you are standing directly in front of the light, as well as when you are standing on either side of the light. When properly installed, this type of light can function as both a front clearance light and a side marker light or as a rear clearance light and side marker light.

MC65RB Optronics Incandescent Trailer Clearance and Side Marker Light - Submersible - 2 Bulbs - Rectangle - Red Lens - PC Rated

Alternate part number: MC-65RB

California residents: click here

Customer Satisfaction Score:

Customer Reviews

Optronics Incandescent Trailer Clearance and Side Marker Light - Submersible - 2 Bulbs - Red Lens - MC65RB

Average Customer Rating:  4.9 out of 5 stars   (1348 Customer Reviews)

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.


Lights were great fit for my cargo mate car trailer.


In the process of detailing my 2003 motorcycle trailer to get it looking good again. Clearance lights needed replacement. The original red lights were now faded pink for goodness sake! Replaced all 20 lights with the thin-line red and amber side marker lights. Replacement couldn't be more simple; remove original lights, snap in new. Exact fit and everything worked perfectly. Now, once the new tires and wheels get here we'll be in good shape! The new lights definitely make you say, "no way that trailer's 15 years old" :-)


Excellent product very well-made easy to install exact same size as original ones that were on the trailer . They are nice and bright . When I ordered this product they gave me a date of the delivery rand it arrived on that day .
Very pleased


I ordered four of these MC65RB side marker lights as spares for my Cargo Mate trailer. They arrived in perfect shape. They are a suitable replacement for the old part number 1A-V-1260 running lights that came on my cargo trailer. I have installed one already and it works just like the old one. I would recommend these lights to anyone,



A year has gone by and the light I installed still operates perfectly. A quality product.


I have ordered from etrailer a few times and I always receive my order promptly and correctly. Thank you etrailer!!!!


Best service out of anyone and I mean anyone I have ever had. They show you every step of the process of where your order is. Should teach others how it’s done. Oh yeah and the lights work great.


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.


Did not quite fit the existing base but with some struggles got them all on the Trailer.


There is not enough room on the back of the light to clear any fastener that i tried. There is relief there but not enough. Other than that the produce is pretty decent in quality. Installing is kind of a pain because of the clearance issues therefor the poor rating.


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 Sorry, didn't have time to take any pictures; had to cover the trailer up with a RV Trailer Cover before bad weather.


Although a small and simple item, in my state the police consider side marker lights being out as "cash cow." Fortunately I was able to get the exact side marker lights I needed in a timely manner and at an exceptionally great price. I now carry four extra in the trailer. Thanks George!!


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



Still great!


I have a 2001 Merhow equistar which I was not able to find on the select your vehicle drop down choices. However I was able to find the trailer lights I needed on etrailer. Delivery was quick and the product installed easily. It was a nice experience ordering through etrailer. Thanks


The first one I received was thrown in a box with some bearings and other heavy parts and consequently had the terminals broken. I sent etrailer an email and they shipped another one out to me. The new light is perfect (and bright) and ready to go on the trailer.

Thank you etrailer, for your awesome customer service.


A good replacement part. I bought a pair of them and they work just fine. I like the LED technology. At night they are bright. However, I like to turn my running lights on during the day, when I think they could be a bit brighter.


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.


I have been looking for this replacement part for the past month. I found e-trailer service to acquire my part to be the most effective. The parts were exact...the shipping fast efficient and reasonable. They are now on my favorite's list for all my trailer needs. I would recommend them for all your trailer needs


These were the exact fit for my 2003 Haulmark, trailer, the price was equal to Haulmark,, shipping was 2.99 (USPS) HM only had 15.99 (USPS) the 2 lights are under 6 bucks This is the place for trailer parts. I will take time to check out the entire website.


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.


The marker lights are an exact replacement for the ones on my trailer. Ordered a couple extra to have on hand when traveling just in case I need to replace a marker while on the road.

Ordering was easy. Had one question for Customer Service which was answered the next day. Package arrived two days after placing order.


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.


Parfait c’est ce que je recherchais
that's what I was looking for]


Great Product!! Just what I needed.....Thanks!! I received the package today.....Thanks for the quick delivery! I will order more from

William R.


Still working Great!! Thanks for the good products that your Company sells.


Had to replace some faded out clearance lights on my trailer. Snapped the new ones right on. You guys always a good to deal with, including the videos you have on some installations. They were really helpful when I had to install my trailer brake setup on my truck! Thanks Hal


just what I needed-replacement for cargo mate utility trailer -sealed bulb assembly-two pin

Show More Reviews

See what our Experts say about this Optronics Trailer Lights

  • What is the Difference Between a P2 Rated Light and a PC Rated Light
    We actually have a handy help article, linked to the right for you, that explains this and other helpful information on trailer lights. Below is an excerpt: The light beam emitted from a P2 or P3 light spreads out 45 degrees to each 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 of the trailer. When mounted square to the front, sides, or back of a trailer, this kind of light provides...
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  • Running Lights for 2014 Shorelander Trailer
    It doesn't look like we have an exact match for the clearance light on your trailer, but we have several similarly shaped ones that could work. If you measure the dimensions of your light and then check out the link I attached to the right you will see a list of all of the submersible, rectangle clearance lights we offer. If you select the dimension closest to your light has from the list on the left you will see the lights that would fit the best.
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    Image 1 for
  • What is the Difference Between PC and PC2 Lights
    Lights with a PC rating like the Optronics Incandescent Trailer Clearance and Side Marker Light # MC65RB and PC2 rated lights are both combination lights. The light on these spreads out 90 degrees to either side of its centerline for a total of 180 degrees of coverage. The main difference between PC and PC2 is the application. PC2 Lights are specifically designed for trailers at least 80" wide while PC lights do not have this restriction.
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  • How To Order Trailer Lights
    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 and the 97 DOT stands for the Department Of Transportation. 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) that is on your light to be able to get the correct light for your trailer....
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  • Are Optronics Clearance Lights MC65RB and MCL65RB the Exact Same
    The trailer clearance light part # MC65RB is dimensionally the exact same as the # MCL65RB so it would use the same mount and be a direct replacement.
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  • Availability of LED Version of Optronics Thinline LED Trailer Clearance Light MC65RB
    The # MCL65RB is an LED version of the # MC65RB that you referenced in your question. The LED version is brighter than the incandescent as well. I attached a review video for this LED light for you to check out as well.
    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.
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  • What Screws Fit Black Bracket and Single Wire Plug for Thin Line Series Trailer Lights # A65PB
    The back of the lights that go with the Black Bracket and Single Wire Plug for Thin Line Series Trailer Clearance and Side Marker Lights, # A65PB, have a recessed area over the mounting holes. Take a look at # MC65RB, and click on the third picture to see the recessed area. I went out to the warehouse and pulled both parts to measure. There is a space of 3/16 inches between the bottom of that recessed area and the base of the bracket. The screw head would have to be 3/16 inches tall or...
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  • What Is The Current Draw For Optronics Sealed Side Marker Light
    I spoke with my contact at Optronics about the Sealed Side Marker Light, part # MC65RB. They told me the current draw for this 12 V light is .6 amperes. This is a sealed, waterproof light and measures 3-15/16 x 1-1/4 x 7/8 inches. The light mounts on 3 inch centers. The mounting hardware, part # A65PB is sold separately.
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  • Availability of Replacement Optronics Trailer Taillight MC65RB that is LED
    Yes we do have an LED replacement for the # MC65RB with the part # MCL65RB.
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  • Trailer Clearance Light Replacement
    Those part numbers are for trailer clearance lights, and the main difference between 1a-v-1240R and 1a-v-1260r is that the 1240R is a led light, and the 1260r is a incandescent light. Both lights have red lenses and are 3 7/8 inches long, by 1 1/4 inch wide. We do have replacement lights that will work in both styles. For an led red marker light you can use Optronics Thinline LED Trailer Clearance or Side Marker Light # MCL75RB. For an incandescent light use Optronics Incandescent Trailer...
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  • Replacement LED-Type Surface-Mount Trailer Lights
    We offer high-efficiency LED-type trailer lights in various sizes, colors and shapes. The linked page will let you sort the results by clicking on the attributes you prefer. The results shown are already filtered to show only surface-mount red color lights like the Optronics # MC65RB. You can use the additional filters on the page to select the size and shape you need. Please feel free to submit a photo of your trailer lights if you need further assistance finding suitable replacements.
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  • Availability of Replacement Lens for Magnetic Tow Lights
    I compared the picture of the lights you have to the magnetic tow lights we carry and it looks like you have the Roadmaster Magnetic lights part # RM-2120. Which I spoke to my contact at Roadmaster and he said that any replacement lens with a 4-1/4 inch overall diameter that snaps onto the light housing would work like the part # A24RB.
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    Image 1 for
  • Troubleshooting 5th Wheel Trailer Clearance Lights Blinking with the Turn Signals
    When using the brake and turn signal at the same time, you are drawing more power then just with running lights. Since some of the LEDs blink, they may inadvertently be attached to the turn signal wire on the trailer. Most trailers have one wire that carries both turn signal and brake light functions and one wire that carries running lights. I would check to make sure the correct wire is run to the new clearance lights. An LED clearance light like # MC65RB will have two terminals or wires....
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  • Possible Replacement Red Clearance Light Lens For 1998 Trails West Horse Trailer
    I found some pictures of a 1998 Trails West Horse Trailer but couldn't quite make out what model red clearance lights it used, and unfortunately trailer manufacturer's don't keep records of this kind of thing. Based on that picture it looks like they used Optronics # MC65RB which is a pretty common light. This lens has two prongs on it that plug in to the black base # A65PB. As long as this base is what your trailer has installed you can use the # MC65RB, or if it's a different base that...
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  • Replacing Optronics Thin Line Incandescent Trailer Light with Thin Line LED Trailer Light
    You are exactly right. Changing out your # MC65RB incandescent lights for new # MCL75RB lights will simply require removing the existing light and snapping a new light into the same housing. Both of these lights use the # A65PB bracket. If any of the brackets on your trailer need replaced you can use the # A65PB as a replacement, but the LED lights will not require any different base than the incandescent lights. I have attached an installation video of the # MCL75RB light for you.
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  • Upgrading Optronics Thinline 65 Series Clearance and Side Marker Lights To LED
    The Optronics Thinline LED Trailer Clearance or Side Marker Light # MCL65RB will fit the same Mounting Bracket # A65PB as the Optronics Incandescent Trailer Clearance and Side Marker Light # MC65RB. The only difference is the LED versus the incandescent lights. The Optronics Thinline LED Trailer Clearance or Side Marker Light # MCL65AB is also available in a amber lens if you also have them going down the sides of your band trailer.
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  • Comparing Black Bracket and Single Wire Plug A65PB and Plug n Go Bracket A65PBPG
    For the Black Bracket and Single Wire Plug, # A65PB, the plug on the end of the one wire is different than that on # A65PBPG. The plug n go style on # A65PBPG is easier to attach to the MC65 series of lights, like # MC65RB, because the cable is molded around the connector. This also covers any exposed wires that would normally be present like on # A65PB.
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  • Replacement Oval Amber Trailer Clearance Light Lens
    Thanks for the picture! Because of that I was able to determine that you need the part # A66AB.
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    Image 1 for
  • Replacement Lens for my Magnetic Towing Lights
    We offer replacement lenses for the part # RM-2120 in the red color using the Replacement Tail Light Lens Red part # A52RB. These are red lenses and to get the black out look you will have to paint it. I do not offer a blacked out version. Double check the diameter of your light to ensure this does in fact match yours. The outside diameter of the lens should be 4 5/16" for this to work out. If you have something different let me know.
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  • Troubleshooting Installation of Side Marker Lights on a 2003 Silver Star Horse Trailer
    I have a solution for you but we do not have an exact replacement for the PM154 that you referenced. I saw that you purchased # MC65RB and the proper base bracket for these lights is # A65PB if you would like black or # A67CB if you wanted a chrome base.
    view full answer...
  • Availability of Optronics 67RB Clearance/Marker Lights in Red and Amber
    It sounds like you're looking for the Thinline LED Trailer Clearance or Side Marker Light with Bracket part # MCL67RB for red or part # MCL67AB for amber.
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  • Replacement Clearance Lights 1-1/4" Tall, 3-15/16" Long and 7/8" Deep With 2 Prong Connectors
    We have the Optronics Incandescent # MC65RB and Optronics Thinline LED # MCL75RB that use a red lens. The Optronics Incandescent # MC65AB and Optronics ThinLine LED # MCL75AB have an amber lens. A Optronics ThinLine LED # UCL65CB uses a clear lens with red LED's, and the Optronics ThinLine LED # MCL65CAB is a clear lens with amber LED's. We will not have any with a white light and clear cover.
    view full answer...
    Image 1 for Image 2 for Image 3 for
  • Can I Use Optronics LED Light # MCL75RB in the Same Base as Light # MC65RB
    Yes, both the Optronics lights # MC65RB and MCL75RB use the same mounting base, so the # MCL75RB lights will snap into your old bases. You will then need to wire in the lights, with a power and ground connection. Part # MCL75RB is a sealed LED light light and will burn brighter but draw less power than part # MC65RB. Both lights use either base # A65PB or # A67CB. See the video that I shot showing both lights.
    view full answer...

Do you have a question about this Trailer Light?

Info for this part was:

Employee Patrick B
Video Edited:
Patrick B
Employee Jacob T
Video Edited:
Jacob T
Employee Michael H
Expert Research:
Michael H
Employee Jeff D
Expert Research:
Jeff D
Employee Jameson C
Expert Research:
Jameson C
Employee Adam R
Expert Research:
Adam R
Employee Jeffrey L
Expert Research:
Jeffrey L
Employee Laura H
Updated by:
Laura H
Employee Brian T
Updated by:
Brian T
Employee Cole B
Installed by:
Cole B

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