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LED Trailer Clearance or Side Marker Light with Reflex Reflector - 2 Diodes - Amber Lens

LED Trailer Clearance or Side Marker Light with Reflex Reflector - 2 Diodes - Amber Lens

Item # 328-K-51
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LED Trailer Clearance or Side Marker Light with Reflex Reflector - 2 Diodes - Amber Lens 4L x 2W Inch 328-K-51
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3-3/4" x 1-5/8" Oval. Trailer light with reflector functions as a clearance or side marker light. Durable polycarbonate base and lens. Mounts on surface of trailer - hardware not included. 2-Wire pigtail. P2 rated. Lowest Prices for the best trailer lights from Command Electronics. LED Trailer Clearance or Side Marker Light with Reflex Reflector - 2 Diodes - Amber Lens part number 328-K-51 can be ordered online at etrailer.com or call 800-298-8924 for expert service.
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  • Reviews (43)
  • Q & A (6)
  • Photos
  • Why etrailer?

Command Electronics Trailer Lights - 328-K-51

  • Clearance Lights
  • Oval
  • LED Light
  • Amber
  • 4L x 2W Inch
  • Surface Mount
  • Command Electronics
  • Non-Submersible Lights
  • Rear Clearance
  • Side Marker

3-3/4" x 1-5/8" Oval. Trailer light with reflector functions as a clearance or side marker light. Durable polycarbonate base and lens. Mounts on surface of trailer - hardware not included. 2-Wire pigtail. P2 rated.


  • Small, oval trailer light serves as either a clearance or side marker light
  • Built-in reflex reflector removes the need for a separate reflector
  • LEDs make great replacements for incandescent lights
    • Last 50 times longer
    • More efficient - provide brighter light with less power output
    • No bulbs to replace - no brittle filaments
  • Durable polycarbonate base with acrylic lens
  • Amber lens with amber LEDs
  • Compatible with 12V DC systems
  • Mounts on surface of trailer - hardware not included
    • Installation requires a 3/4" hole at desired location for wiring base
    • Can be mounted horizontally or vertically
  • Available chrome trim ring (sold separately)
  • 2-Wire pigtail includes power lead and ground wire
  • P2 rated light produces a 90-degree beam pattern
  • DOT and SAE compliant
  • Assembled in the USA


  • Overall dimensions: 3-3/4" long x 1-5/8" tall x 1/2" deep
  • Distance between mounting holes (center to center): 2-1/2"
  • Diodes: 2
  • Wire length: 5"
  • 1-Year limited warranty

Command Electronics K-51 Amber LED Clearance Light with Reflex Reflector Measurements

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.

Surface-Mount Light

Surface Mount Trailer Light Installation Diagram

Surface-mount trailer lights install using a flange or bracket with mounting holes. These lights lay flat against the trailer surface and only require a small, often pre-existing hole, for wiring. Mounting hardware is used to secure the light to the trailer.

K-51 Command Electronics Modern LED Clearance or Side Marker Light w/ Reflex Reflector - Oval - Amber Lens - Surface Mount - P2 Rated

Customer Reviews

LED Trailer Clearance or Side Marker Light with Reflex Reflector - 2 Diodes - Amber Lens - 328-K-51

Average Customer Rating:  4.8 out of 5 stars   (42 Customer Reviews)

3-3/4" x 1-5/8" Oval. Trailer light with reflector functions as a clearance or side marker light. Durable polycarbonate base and lens. Mounts on surface of trailer - hardware not included. 2-Wire pigtail. P2 rated.

- 328-K-51

I had to replace a clearance lite on my winnabango Motorhome I called the manufacturer cause I couldn’t find one locally and they told me that the company had gone out of business so what I found on your website was the closest to what I needed and it worked well you had a good selection on your web site and worked well for what I needed. Thank You 651464

- 328-K-51


- 328-K-51

Quick shipper! Was exactly what I needed 939880

- 328-K-51

They perform as expected. They replaced two of yours that failed after a few hours. Thanks for asking. 933645

- 328-K-51

Product was as described. Promised delivery was made and tracking was provided. Un 933068

- 328-K-51

Worked like it was designed to do. 932203

- 328-K-51

Ordered and it came quicker than their website stated. Exact part that I needed. etrailer.com is so easy to shop from. Thank you so much. And especially when you can't find certain parts anywhere else! 924272

- 328-K-51


- 328-K-51


- 328-K-51

I was amazed at how fast my order was filled and shipped. It was a perfect match. So thankful for the excellent service. 910183

- 328-K-51

The original light took on water right away. The replacement I got from etrailer is still dry and working well. Will order more as the original lights fail. 905319

- 328-K-51

Marker leds as per advertising. Timely delivery. 903969

- 328-K-51

Light looks great but I haven't installed it yet. I am confident though. 898279

- 328-K-51


- 328-K-51

Needed a replacement for obsolete Winnebago amber runing light lens. This one is same dimensios but shallower. It fits well enough with silicone sealant to help keep it attached. 881283

- 328-K-51

Received the order extremely fast. Correct and just as described. Thanks. 872766

- 328-K-51


- 328-K-51

They worked perfectly, and came quickly with no hassle. 860328

- 328-K-51

e-trailer is a great place to go to for all your rv and towing needs, these side marker are a exact replacement for my 2017 Jayco fifth wheel and easy to install. 858833

- 328-K-51

It is as good if not better than the factory light on my 5th wheel. Easy to install. These are all plastic, so we'll see how they survive when subjected to UV rays. 856795

- 328-K-51

The trailer light that was ordered was the perfect fit. The product description and dimensions provided were very helpful to ensure I was ordering the right product the first time. The assistance provided to a question I asked was also very helpful and saved me time on installation from the previous ones I ordered. Will definitely be coming back when anything else is needed for our camper. Thanks! 853723

- 328-K-51

Exactly what I needed. I couldn’t find this part for my 2020 Jayco anywhere else 853624

- 328-K-51

works 100% easy to install love it 853584

- 328-K-51

Took a long time to get the order 848155

- 328-K-51

As always, eTrailer’s products are just as advertised and their service is excellent. In my most recent purchase, I reached out to eTrailer because my order was slow to arrive. Even though the delay was no fault of eTrailer’s, they took the time to review the shipping process and get me a thorough update for the delivery. I will gladly continue to do business with them and recommend eTrailer highly. 848065

Show More Reviews

Ask the Experts about this Command Electronics Trailer Lights

  • Replacement Clearance Lights Needed for GLO-BRITE 122R and 122Y Lights
    From what I could find it looks like your 122R (red) and 122Y (amber) lights measure 3.75" x 1.70" x .81". We don't have any replacement lense directly for the GLO-BRITE lights but we do have some similar lights that you could use as replacements. I recommend checking out the Command LED lights # 328-K-51 for amber and # 328-K-52 for red. These measure 3-3/4" long x 1-5/8" tall x 1/2" deep and have mounting holes that are spaced 2-1/2" apart on center. Attached are links to review...
    view full answer...
  • What Type of Trailer Wiring Connector Clamps Down to Connect to Wires
    Sounds like you are describing quick splice connectors like the part # SWC501925-1 which are a pretty standard and easy design most of the time. To make the connection you just set the two wires in the slots and use pliers to close the lid and your set. This part number actually strips the wires too.
    view full answer...
  • What is the Mounting Hole Spacing for LED Clearance/Marker Light 328-K-51
    The distance between the 2 mounting holes on the LED clearance/marker light # 328-K-51 is 2-1/2 inches on center.
    view full answer...
  • Replacement Clearance Light for Glo Brite 122Y on 2013 Forest River Sunseeker
    We have some replacement clearance lights that are similar to the Glo-Brite lights, but unfortunately we do not carry Glo-Brite brand, and from what I understand they have gone out of business, so I do not have the exact lens covers that you are looking for. For a replacement clearance light for your 2013 Sunseeker, I recommend the Command Electronics LED Trailer Clearance or Side Marker Light with Reflex Reflector # # 328-K-51 because they are a similar size to your current clearance...
    view full answer...
  • Installing Side Marker Clearance Lights with Two Wires on Trailer
    The Bonded 4 Wire - per foot # 16-4B-1 you asked from would use the brown running light wire for your clearance/marker lights. The LED light you referenced sound like they have two wires so one will be power and the other ground. You can connect them to a battery to test which wire is power as LED lights are polarity sensitive. It is likely the yellow is power and the grey is ground which will be attached to the base frame or metal frame structure on your trailer. Often the clearance/side...
    view full answer...
  • How Does The Chrome Trim Ring Fit The Command LED Clearance Lights
    The Chrome Trim Ring for Command Electronics Oval LED Clearance or Side Marker Light part # 328-89-386 does just snap over the lens of the LED Trailer Clearance or Side Marker Light with Reflex Reflector part # 328-K-52 or part # 328-K-51. You are correct about the videos, I will put in a suggestion for a video that demonstrates both the light and the ring. The 2-Wire pigtail of the LED lights include power lead and ground wire that will connected to the existing wiring with heat shrink...
    view full answer...

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Info for this part was:

Expert Research:
Michael H
Expert Research:
Jameson C
Expert Research:
Victoria B
Installed by:
Cole B
Edited by:
Daron K
Written by:
Brian T

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