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Clearance or Side Marker Trailer Light w/ Reflex Reflector - Rectangle - Amber Lens

Clearance or Side Marker Trailer Light w/ Reflex Reflector - Rectangle - Amber Lens

Item # MC35AEB
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3-3/4" x 2-1/16" Rectangle. Incandescent trailer light serves as either a side marker or clearance light. Built-in reflex reflector. Durable ABS base. Ear mount on 3-1/4" centers. Single wire. P2 rated. Lowest Prices for the best trailer lights from Optronics. Clearance or Side Marker Trailer Light w/ Reflex Reflector - Rectangle - Amber Lens part number MC35AEB can be ordered online at etrailer.com or call 800-298-1624 for expert service.
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  • Reviews (160)
  • Q & A (4)
  • Videos (1)
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Optronics Trailer Lights - MC35AEB

  • Clearance Lights
  • Rectangle
  • Incandescent Light
  • Amber
  • 4L x 2W Inch
  • Surface Mount
  • Rear Clearance
  • Side Marker
  • Non-Submersible Lights
  • Optronics

3-3/4" x 2-1/16" Rectangle. Incandescent trailer light serves as either a side marker or clearance light. Built-in reflex reflector. Durable ABS base. Ear mount on 3-1/4" centers. Single wire. P2 rated.


  • Rectangular trailer light functions as a side marker or clearance light when properly mounted
  • Built-in reflex reflector eliminates the need for a separate reflector
  • Incandescent bulb can be easily replaced
  • Durable ABS black plastic base
  • Screw-on acrylic lens
  • Surface mounts on trailer - hardware not included
  • Single-wire design grounds through the mounting hardware
  • P2 rated


  • Dimensions: 3-3/4" long x 2-1/16" tall x 15/16" thick
  • Distance between mounting holes (center on center): 3-1/4"
  • Bulb type: incandescent
  • Power draw at 12.8 volts: 0.2 amps
  • 3-Year warranty

Optronics MC35 Series Side Marker Clearance Light Diagram

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.

MC35AEB Optronics Rectangular Side Marker/Clearance Incandescent Trailer Taillight with Reflex Reflector - P2 Rated - Amber

California residents: click here

Video of Clearance or Side Marker Trailer Light w/ Reflex Reflector - Rectangle - Amber Lens

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.

Video Transcript for Optronics Trailer Lights - Clearance Lights - MC35AEB Review

Today we're going to be taking a look at part number MC35AEB. This is the optronics trailer clearance or side marker light with the reflects reflector built in. The rectangular light is going to function as either a side marker light or clearance light or identification light. The amber lens has the built reflects reflector which eliminates the need for a separate reflector. It's going to contain one incandescent bulb. It's going to feature the ABS plastic base and it's going to feature a screw on acrylic lens.

It's easily replaceable. It's just held on there with two screws. See here at the back we have a single wire design. This unit is designed to ground through your mounting hardware here on this location or on this side. Mounting hardware is sold separately.

It's got the ear mount base for installation on the surface of your trailer. It is a P2 rated light. We're going to take a look at the overall dimensions starting with the overall length. Measuring from edge to edge that's going to measure about three and three quarters of an inch. Measuring this direction it's about two and one sixteenth of an inch. Then the thickness measuring from back to front is going to measure about fifteen sixteenths of an inch.

Now just the lens portion going this direction, that's going to be about two and three quarters of an inch, and going this direction just the lens is about two inches. Our mounting holes are going to be separated on center apart from one another by three and one quarter of an inch. The power draw for this light at 12.8 volts is going to be 0.2 amps. Now we're going to go head an hook it up to our external power source, that way you can see what it looks like with power running to it. Connect our power wire, then I'm going to take my ground wire and connect it right here to that location where it would ground through our mounting hardware. Again, it's going to contain one incandescent bulb.

It sends out a nice, strong, consistent signal, and then you can see how in the middle there its got an opening where the reflector is not built in. That's going to allow a lot of light to come through, and then all the way around the light is that built in reflects reflector which again eliminates the need for a separate reflector. That's going to do it for today's review of part number MC35AEB. This is the optronics trailer clearance or side marker light with the built in reflector.

Customer Reviews

Clearance or Side Marker Trailer Light w/ Reflex Reflector - Rectangle - Amber Lens - MC35AEB

Average Customer Rating:  4.9 out of 5 stars   (160 Customer Reviews)

3-3/4" x 2-1/16" Rectangle. Incandescent trailer light serves as either a side marker or clearance light. Built-in reflex reflector. Durable ABS base. Ear mount on 3-1/4" centers. Single wire. P2 rated.


Exact duplicate that was on trailer originally, matches the other side! Thanks :)


Exact replacement for the lighting on my trailer. Gravel roads here in Iowa reek havoc on lights


This side marker light was identical to what my trailer shipped from the factory with. Perfect match and fit!


Replaces OEM for Carry-On Trailer. Exact replacement. Need to splice hot wire, other than that, exact replacement.


Just what I needed. Arrived in good time. Works great. Exact replacement part!


Totally satisfied with etrailer. The items are exact, great p er ice and great Customer Service. Will continue to shop with etrailer!!!!


These lights are identical to the original ones I replaced on a trailer I bought. They work great.

Still working just fine.
Kirk L - 04/21/2021


Seems like a good side marker light. Took less than 5 min. to change out the broken one... haven't even hooked it up to see if it works yet... but sure it does... Plus the shipping was fast, got it in 4 days... Will surely order another if i need to.


Great price !! Great product!! The only place that had a light that matched my existing marker lights. Shipment was fasttoo. Thank you !!


Exactly what I needed a perfect fit to my trailer.


I recently purchased a side marker light from E Trailer - I reviewed and compared other sellers. E Trailer without a doubt have the best price and description. In fact, the price was so good I ordered three instead of the one I just needed for backups later if needed. The description was great, the price was great, and the follow-up for payment and tracking number was Top Notch. Highly recommend for anybody looking for trailer parts.


good cheap replacement for the lights that seem to get broken on my utility trailer on a regular basis


Perfect match for replacement at a reasonable price.


light was exactly as advertised and identical to the broken one i was replacing. easy to repair and worked fine. i had the trailer about 6 months and then sold it for bigger one so really do not know if light is still working but assume it is as worked fine previously. would recommend it and would buy it again. thanks


bought it for the lens mine got broke and is an LED so i only used the lens .but it fit perfect


the trailer light is still working just fine.


Part was exactly what I ordered and at a reasonable price very pleased!


Item showed up much more quickly than estimated, and was picked well.


etrailer had the exact side/reflector lights I needed to replace those that I recently smashed. The cost of the lights was reasonable, as was shipping. And I didn't have to drive anywhere to seek them out. The lights were shipped and received as promised. I'm sure I'll be back. I smash trailer lights on a regular basis. The follow up from etrailer.com was timely and helpful, also. And I never do reviews, but this transaction was a pleasure.

One year later, I still have the trailer lights that I reviewed above, they work and look like I want them to. So far, no one has damaged them. But, hay-hauling season is coming. Ill be back here to buy more soon Im sure.
James - 07/11/2017


I ordered this side light , it arrived damaged, Customer service is excellent, I received the replacement today. Great to see a company like this today.


Exactly like OEM part. Easy instal and arrived ion said time.


Replaced original Loadmaster light and works good.

Still working, no complaints
John H - 12/03/2020


Exact replacement part I needed. Delivered on time at a great price.


yes i did received the side markers in good shape and not only did you have alot of markers you had the ones i needed and was very easy to order them . thank you for the fast delivery .


Very satisfied with the customer service, quality of product, stock on hand and speed of delivery.

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Info for this part was:

Employee Michael H
Expert Research:
Michael H
Employee Jameson C
Expert Research:
Jameson C
Employee Cole B
Installed by:
Cole B
Employee Wilson B
Written by:
Wilson B
Employee Brian T
Updated by:
Brian T
Employee Noah M
Updated by:
Noah M

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