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LED Trailer Tail Light w/ Reflector - Weatherproof - 4 Function - 76 Diodes - Clear/Red Lens
Diamond

LED Trailer Tail Light w/ Reflector - Weatherproof - 4 Function - 76 Diodes - Clear/Red Lens

Part Number: DG52721PB
In Stock
$118.54
Retail:$157.10
You Save: $38.56
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11" x 8" Rectangle. Weatherproof trailer light serves 4 functions: stop, turn, tail, and backup light. Built-in reflector between lights. Surface mount with grommet - hardware not included. 5-Wire pigtail. Great Prices for the best trailer lights from Diamond. LED Trailer Tail Light w/ Reflector - Weatherproof - 4 Function - 76 Diodes - Clear/Red Lens part number DG52721PB can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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  • Reviews (56)
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Diamond Trailer Lights - DG52721PB

Highlights

  • One Light, 4 Functions: Provides stop, turn, tail, and backup lighting in one assembly.
  • Long-Lasting LEDs: 76 diodes deliver bright light that uses less power and lasts 50x longer.
  • Weatherproof Build: Sealed housing and lens protect against water damage for reliable use.
  • Built-In Reflector: Improves rear visibility and safety without adding extra parts.
  • Simple Surface Mount: Installs flat with screw holes on top, bottom, and sides—no grommet needed.
  • Road Legal: DOT approved to meet lighting standards for safe towing and travel.

Features to know about

Brighter and More Efficient Lighting: 76-Diode LED Output

If you’re done dealing with dim or burned-out bulbs, this LED tail light is a big step up. It uses 76 diodes to give bright, even light for stop, turn, tail, and backup functions—all in one assembly. LEDs last up to 50 times longer than incandescent bulbs and draw less power, so you get stronger illumination without stressing your wiring or battery. You’ll notice the difference in both clarity and reliability the first time you hit the brakes or shift into reverse.

Simplified Wiring and Mounting: Ready-to-Install Surface Mount

No need to drill large holes or fuss with special grommets. This light mounts flat against the trailer surface using the built-in bracket that already has holes for screws on the top, bottom, and sides. The 5-wire pigtail makes wiring clear—white is ground, red handles stop/turn, and the black wires carry running and backup light circuits. It’s straightforward and secure, so you spend less time setting it up and more time on the road.

Photo of surface-mount LED trailer tail light showing flush installation on trailer surface with visible mounting flange and screw holes.

Weather Protection That Lasts: Durable Polycarbonate Build

Built to handle outdoor conditions, the housing and lens are weatherproof to guard against water damage. The tough polycarbonate material resists cracking, fading, or warping over time. Even if you’re caught in wet weather or heavy spray, the sealed design keeps moisture out so your LEDs stay bright and consistent trip after trip.

Added Safety in Every Signal: Built-In Reflector Design

Visibility matters day and night, and this light doesn’t just shine—it reflects. A built-in reflector between the two lenses boosts light output for added safety when braking or turning. It’s DOT approved, so you can count on it meeting visibility standards wherever you go. The clear lens with white LEDs for backup and red lens with red LEDs for tail functions make every signal easy to see from a distance.

Reliable Fit That Replaces Outdated Designs: 11" x 8" Combination Light

At 11" long x 8" tall x 1-1/4" deep, this rectangular combination tail light fits where older units used to mount while giving you modern LED performance. It’s designed as an individual assembly—just one piece that handles all four lighting functions without needing multiple lights or extra parts. That means a cleaner look, fewer wiring points, and dependable performance backed by a 1-year warranty.

Specs

Quantity

  • Quantity: 1 combination trailer tail light

Dimensions

  • Dimensions: 11" long x 8" tall x 1-1/4" deep

Technical diagram of Diamond DG52721PB LED trailer tail light showing rectangular clear and red lenses with built-in reflector and labeled dimensions.

Lighting

  • Diodes: 76

Warranty

  • Warranty: 1-Year warranty

DG52721PB Diamond Group LED Trailer Combination Tail Light - Stop, Tail, Turn, Backup - LED - Weatherproof - 76 Diodes - Red Reflector

Alternate part number: 52721





Customer Satisfaction Score:

Ratings & Reviews

4.8

56 reviews
Review sort icon
11" x 8" Rectangle. Weatherproof trailer light serves 4 functions: stop, turn, tail, and backup light. Built-in reflector between lights. Surface mount with grommet - hardware not included. 5-Wire pigtail.

by:

Product actually looks better than what you see on the computer.



by:

Exact Fit.....Factory Fit

Quick
delivery



by:

Parts were exactly what I expected.
In
a time when RV service is now almost impossible to get, and parts are hard to find, they delivered. Parts shipped the next day, standard delivery was 3-4 days.



by:

Easy hookup. So far they are good - get some road miles on and see how they last. Retrofit to and enclosed trailer



by:

Quick delivery and an exact replacement of the original. The installation was easy and fast.



by:

Fast Shipping, nice looking lights.



by:

Perfect replacement on my Northern Lite truck camper



by:

EXCELENT TURN AROUND TIME



by:

I received exactly what I expected. I haven't installed it yet, so perhaps a further review after installation.



by:

The part was a perfect match and even had the same part number as the original OEM part. The new part even had a minor design change that corrected the original OEM flaw that caused the part to fail prematurely. The parts showed up a day sooner than forecasted and Jesse, the sales person, was very efficient and helpful on the phone. Great job etrailer!



by:

Product was well packaged, and was as advertised. Shipping was prompt, much sooner than I expected. My only concern was that there were not wiring directions. Glad I took a picture of the old one before I cut all of the wires. Not an issue for me but if you were going to change out lights on a trailer, the diagram would certainly come in handy.



by:

Super easy to install. Nice and bright. Installed them and not even a month later we hauled our big camper across the country and back. No issues, and still holding up! They are great and worth every dollar spent on them.



by:

I ordered this tail light for my 2021 motor home from an auto supply,& then a camper dealership & then a big on line company (don't want to display their name), They all sent the wrong one. etrailer was the ONLY one that not only sent the correct one, I received it within the time line that I picked when I ordered it. Thanks etrailer



by:

Perfect match for original taillight on RV that 3/4 of the parking light leds have failed in 3 years. The other taillight was replaced under warranty after a year due to dampness inside. Hopefully the design has improved and these will last a lot longer.



by:

Quick delivery easy install



by:

Thay worked good i like them



by:

The lights sat in the shop for a long time. The truck is together and the lights are on a truck utility box instead of a trailer. A few photos attached.
The lights are on the upper right rear of the utility box.



by:

The old trailer lights had gotten wet inside and so many of the LED lights didn’t work. This new item has a thick foam gasket that looks promising and should keep the water out. Time will tell. Perfect fit ,all wires identical, piece of cake to install. As for etrailer, they have always done a great job for me, no complaints.

Ronald profile picture

Ronald

9/12/2024

Still looking like new. Very happy that the gaskets are working and keeping everything nice and dry. I would recommend this product.



by:

A simple change out and a great fix.



by:

This taillight assembly was the perfect match for the existing unit for my Adventurer Camper, (30% of the LED's were not working). An easy installation. Etrailer is a great company and will definitely use again.

Victor S. profile picture

Victor S.

7/5/2020

After a full year, both the Etrailer taillight assemblies are working perfectly on my camper!!



by:

Exact replacement on my Northern lite c amper!



by:

My old tail light assembly was showing its age. I had upgraded the bulbs but it was still very tired. These lights cost far more than an original equipment replacement but I wanted LED and something that could handle the weather. I installed them on my Itasca motorhome. I worked slow and carefully but they went in place very nicely. They are super bright and work as advertised. I will attach a photo.



by:

Exact replacement. Works perfectly.



by:

Perfect replacement.



by:

1 star deduction for expensive price.
1
star deduction for lack of instructions.

Tiny T. profile picture

Tiny T.

7/7/2026

Its handsome! Weve gotten compliments for improving the look of our motorhome RV. So far, it has held up without any diminishing qualities. We would recommend this product.

Jerry B. profile picture
Etrailer Expert

Jerry B.

7/7/2026

@TinyT I'm happy to hear that's working out for you! What kind of motor home did you install this light on?

25
25

See what our Experts say about this Diamond Trailer Lights

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    Hello again John; when First Brands took over as the parent company for Bargman they discontinued most of their lights. That includes the direct replacement for the 30-91-010 and 30-91-011. Typically we recommend the the Peterson Trailer Tail Light # V457 and # V457L to replace these. However, they do not have a backup light function. The next best thing is the Optronics LED RV Tail Light # OPT34KB and # OPT54KB. These have a smaller profile at 8" long x 4" tall x 1-1/2" deep and have...
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  • Do You Still Carry the Bargman 47-84-610 LED Surface Mount, What Would be a Good Replacement?
    Hello Carlos, I am sorry, but the Bargman 47-84-610 LED is no longer available. The closest options we have to the Bargman 47-84-610 LED would be the LED Trailer Tail Light w/ Reflector, 4 Function, Weatherproof, 76 Diodes, Clear/Red Lens # DG52721PB, or the LED Trailer Light w/ Reflector, Brake, Tail, Turn, Surface Mount, Rectangular, Red # DG52720PB. The mounting holes on both of these lights are a little wider than the Bargman you mentioned. They are 10 1/2" apart. I attached an image...
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  • Solution for Needing Replacement Bargman 84 Series Taillight
    Hey Brad, so the 84 series Bargman trailer taillights were phased out a while ago but we do have the Diamond part # DG52721PB which is similar that would work as a replacement. This is a version that has a reverse light built in. For a version without that you would want the part # DG52720PB.
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  • Replacement Trailer Light for a T. Bargman 30-84-022
    Hey, Travis. We do have a light that can work as a replacement, though it won’t be an exact match. The closest option is the Diamond LED Trailer Tail Light with Reflector, part # DG52721PB. This light measures 11" long x 8" tall x 1-1/4" deep, so it’s a bit larger than your current Bargman lights. It also includes a 5-wire pigtail, just like the older Bargman models, so wiring will be familiar and straightforward.
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  • Availability Of Replacement For Bargman 30-84-022 Tail Light
    Hello Walt, thanks for reaching out. The Bargman 30-84-022 is an older light that is sadly no longer available. The only similar light we have is the LED Trailer Tail Light w/ Reflector # DG52721PB. This is a dual lens LED light with a reflector in the middle. The light measures 11" long x 8" tall x 1-1/4" deep so it is slightly larger than your current Bargman lights. It uses w 5-wire pigtail just like your Bargman lights.
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  • Looking For Rear Tail Lights For 1999 Coachman Leprechaun
    Hello Jan, thanks for reaching out. We may have a tail light option for you, but I really was not able to find any specs on the 1999 Coachman Leprechaun tail lights either - just pictures. Looking at pictures of them online it appears this RV uses a tail light panel, kind of similar to our part # DG52721PB. This light measures 11" long x 8" tall x 1-1/4" deep so if you could compare this to the current tail light that would be great. If the dimensions of your light are different just...
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  • Troubleshooting LED Trailer Tail Light w/ Reflector Not Functioning After Install
    When trailer lights aren't working the issue is related to the assemblies not having either the ground or the power source present for it. Since you most likely have power present to the assemblies when you wired them up I'd suspect the issue is the ground of the lights since there is some variance in how assemblies ground. Looks like the taillights you bought are the LED Trailer Tail Light w/ Reflector # DG52721PB which ground through the white wire and the red and black wires should...
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    Image 1 for
  • Which is Brighter RV Taillight Command or Diamond Trailer Taillights
    Hey Tom, all of the lights you mentioned are bright and will easily be visible but the Command # CE44VR is the brightest compared to the part # DG52721PB and # DG52720PB.
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  • Availability of Driver Side LED Trailer Tail Light w/ Reflector
    Hey Tim! The LED Trailer Tail Light w/ Reflector # DG52721PB is actually universal and can be used on both sides of the trailer. All you have to do if flip it over. You can actually see in the pictures that it says "TOP" on the top and bottom in both orientations. What kind of RV/trailer are you installing the lights on?
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  • Replacement Taillight for 1990 Toyota Itasca Micro Mini
    We don't carry an exact replacement for what you have now as it's an 84 Series Bargman light but the Diamond part # DG52721PB is the same style and would work great.
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  • How To Remove Moisture From Inside The Taillight On A 2018 Ford E-Series Cutaway
    If your LED Trailer Tail Light w/ Reflector - Weatherproof - 4 Function - 76 Diodes - Clear/Red Lens Item # DG52721PB on your 2018 Ford E-Series Cutaway is getting moisture in the reverse light then it is most likely not properly sealed. Allow the inside of the light to dry by either putting it in the sun or using a hairdryer. Start by removing the light from the vehicle. Should not be necessary to disconnect the wiring. Remove the old sealant. Wipe area with alcohol. Check foam pad on...
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  • Is LED Trailer Tail Light w/ Reflector # DG52721PB Sold Individually or in Pairs
    The LED Trailer Tail Light w/ Reflector # DG52721PB that you referenced is sold as an individual assembly. If you needed two of these you'd want to order a quantity of 2.
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  • How to Find Replacement Taillight For RV
    We don't have anything with those numbers, so to find a replacement taillight for your RV you will need to measure your current tail light and find the one that most closely matches your measurement. For example, the LED Trailer Tail Light # DG52721PB is 11" long x 8" tall x 1-1/4" deep. I have added a link below to our entire selection of tail lights which you can filter by size.
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  • Does The Diamond Group LED Trailer Tail Light # DG52721PB Come In White
    Hey Ian, The manufacturer, Diamond Group, unfortunately only makes this style tail light # DG52721PB with a black mounting bracket.
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  • Solution for LED Trailer Tail Light # DG52721PB with Bad Panel
    Since LEDs generally don't break or wear out like incandescent bulbs the panels of the LED Trailer Tail Light w/ Reflector # DG52721PB that you referenced are not replaceable. So if yours had an issue and you were certain it wasn't due to wiring you'd have to replace the entire assembly.
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  • Does LED Trailer Tail Light DG52721PB Need Grommet For Installation
    Nope, a grommet is not required in order for you to install LED Trailer Tail Light w/ Reflector - Weatherproof - 4 Function - 76 Diodes - Clear/Red Lens # DG52721PB. The # DG52721PB come in a mounting bracket already with holes for screws on the top, bottom, and sides.
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  • Surface Mounted Taillight With Turn/Brake/Taillight/Reverse and License Plate Lamps
    We don't offer a flat surface mount lamp that would include the license plate lamp, but the Diamond Group # DG52721PB would provide stop/turn/taillight and the reverse lamp. For a license plate lamp, you can mount something like # OPT77FR above the plate or if you'd prefer a combo plate bracket/lamp, you could use # LPL55CB. Another option would be to use a surface mount lamp that isn't flat, but would provide incandescent stop/turn/taillight/reverse lamps and license plate lamp/bracket...
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Do you have a question about this Trailer Light?


Info for this part was:

Employee Jameson C
Expert Research:
Jameson C
Employee Cole B
Installed by:
Cole B
Employee Wilson B
Updated by:
Wilson B
Employee Brian T
Updated by:
Brian T
Employee Halie H
Updated by:
Halie H
Employee Amanda K
Updated by:
Amanda K
Employee Daron K
Edited by:
Daron K
Employee Anna W
Written by:
Anna W

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