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Peterson LED Combination Tail Light - Submersible - 7 Function - 6 Diodes - Square - Passenger Side
Peterson

Peterson LED Combination Tail Light - Submersible - 7 Function - 6 Diodes - Square - Passenger Side

Part Number: M844
In Stock
$25.48
Trailer Lights
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In Use/Installed

5-3/8" x 4-5/8" Square. Waterproof, LED trailer light acts as brake, tail, turn, side marker, side reflex reflector, rear clearance, and rear reflex reflector. Advanced lens optics. Stud mount with included studs. 3-Wire design. Great Prices for the best trailer lights from Peterson. Peterson LED Combination Tail Light - Submersible - 7 Function - 6 Diodes - Square - Passenger Side part number M844 can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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  • Reviews (22)
  • Q & A (0)
  • Photos

Peterson Trailer Lights - M844

Highlights

  • One Light, 7 Functions: Acts as stop, tail, turn, side marker, clearance, and reflectors for full rear coverage.
  • Reliable In Any Weather: Sealed, waterproof housing is submersible to protect LEDs and wiring.
  • Fewer Replacements Needed: LEDs last 50 times longer and draw less power than incandescent bulbs.
  • Bright, Even Illumination: Advanced lens optics create a solid panel of light for clear visibility.
  • Simple 3-Wire Setup: White ground, black tail, red turn wire for easy 12V hook-up.
  • Road Legal: DOT compliant so your trailer lighting meets safety standards.
Made in USA

Features to know about

Brighter, Longer-Lasting, and Efficient: 6-Diode LED Tail Light

If you’re done dealing with weak or burnt-out bulbs, this 5-3/8" x 4-5/8" Peterson LED combination tail light is the upgrade that makes sense. It packs six white LEDs behind a red lens, producing a bright, even panel of light that shows up clearly day or night. It draws less power than incandescent bulbs and lasts up to 50 times longer—no filaments to break, no bulbs to swap. With its low-profile 1-13/16" deep housing and clean surface mount design, it fits neatly without sticking out.

Keeping Water Out: Fully Sealed and Submersible Housing

Water damage ruins lights fast, but not this one. Its circuit board and lens are completely sealed into a single waterproof unit, making it submersible and ideal for wet conditions. You can trust it to stay dry inside even when launching a boat or driving through heavy rain. The sealed setup protects the internal diodes and wiring from corrosion so your lights keep working season after season.

All-in-One Function for Better Visibility and Compliance

This combination LED light takes care of seven functions—stop, tail, turn signal, side marker, side reflex reflector, rear clearance, and rear reflex reflector. That means fewer separate lights to install while staying compliant with lighting requirements for trailers over 80" wide. The advanced lens optics spread light evenly across the lens for consistent visibility from any angle behind the trailer.

Flatbed trailer over 80 inches wide with combination LED tail lights installed on each rear corner for proper clearance lighting

Simplified Setup: Straightforward 3-Wire Hookup

Installation is easy thanks to the included studs and simple wiring. The light mounts flat on the trailer’s surface with a 2" stud spacing center-to-center. Wiring is clear-cut—white wire for ground, black for tail light power, and red for turn signal. Once mounted and connected to a 12V DC system, you’re ready to go with bright, reliable illumination that’s DOT compliant and built to last.

Specs

Configuration

  • Passenger side: (right-hand side)
  • Driver's side: M844L - sold separately

Dimensions

  • Overall dimensions: 5-3/8" long x 4-5/8" tall x 1-13/16" deep
  • Distance between mounting studs (center on center): 2"

Dimensional diagram of Peterson M844 LED combination trailer tail light showing overall size and mounting configuration

Electrical

  • Diodes: 6
  • Compatible voltage: 12V DC systems

Warranty

  • Limited lifetime warranty: on LEDs

M844 Peterson Low-Profile Combination LED Tail Light for Trailers over 80" Wide - Submersible - 7 Function - 6 Diodes - Red Lens - Square - Stud Mount - Passenger Side





Ratings & Reviews

4.6

22 reviews
Review sort icon
5-3/8" x 4-5/8" Square. Waterproof, LED trailer light acts as brake, tail, turn, side marker, side reflex reflector, rear clearance, and rear reflex reflector. Advanced lens optics. Stud mount with included studs. 3-Wire design.

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Exactly the product I needed and a great price!



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Had it in one day! Great job etrailer



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great price, long lasting brightness



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This is an exact replacement for the light that we had, fit easily.



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Bought 4 tail lights only 1 worked right out of the box - had to work with the other 3 to get them to work



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Perfect replacement for my damaged tail light on our new Timpte 720 aluminum car hauler. Shipping was very quick and packaging was perfect. Thank you for the great service.



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I used these to replace the tail lights on my utility trailer. They are bright and because they are LED they will not require any attention. I look forward to many years of reliable service.



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Purchased these in April, installed in May. Second trip I made with the trailer in July, the lens fell off one light. No damage, it just fell off.
Neither E-trailer, nor Peterson will warranty the light.
I think it's the last time I spend money with either of them.

Katrina D. profile picture

Katrina D.

9/14/2023

I wouldn't know why they choose not to warranty the whole unit. I would recommend reaching out to them directly to see if they can work with you on this.



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very bright



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great price on l.e.d. taillights


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14

See what our Experts say about this Peterson Trailer Lights

  • Troubleshooting Trailer Brake and Turn Signal Not Working
    Hey Edward! That looks like the Peterson LED Combination Tail Light # M844 and # M844L on your trailer. The lens is held on by four tabs which can be seen in the attached photo of the replacement lens # 844-252. It would also be worth double checking your ground connections since a loose ground is often the issue with symptoms like these. I would check trailer connectors as well to make sure no corrosion is present. If all of that checks out it could be a short in the wiring or even loose...
    view full answer...
  • Looking For Square Tail Lights Made In The USA
    Hello Mike, thanks for reaching out. The Optronics lights like the # STL9RB you mentioned are made in Taiwan. We do have a very similar light that is made here in the USA, the Peterson LED Combination Tail Lights # M844L for driver side and # M844 for the passenger side light.
    view full answer...
  • How Does Lens of Peterson LED Combination Tail Light # M844L and # M844 Remove
    On the top and bottom of the Peterson LED Combination Tail Light # M844L and # M844 there are 2 indentations in the black plastic housing that you'll need to insert a small slot screwdriver into to push down and release the tabs of to pull the lens off. In the picture I attached you can see the two slots pointed out.
    view full answer...
    Image 1 for
  • Are Just Taillights Available of Peterson Trailer Taillight Kit # V944
    Yes just the light assemblies are available for the Trailer Taillight kit part # V944 that you referenced. For that you'd want the part # M844L for the left hand side and part # M844 for the right hand side.
    view full answer...
  • Rebuilding 5 X 8 Utility Trailer and Wiring Trailer To Have 7-Way Connector
    First here are some parts I am going to recommend for fixing up your trailer. The Taskmaster 4.80R12 Radial Trailer Tire # TT48012C is a great option since it has a radial versus bias construction. This will give you better highway characteristics and increased tread life. For the wiring the Wiring Kit # HS381-9000 will give you a 7-way and junction box along with connectors for inside the box so you are not trying to find all the right sizes. The 4-way Trailer Harness # A25W2GWB is a great...
    view full answer...
  • Trailer Wiring For a 2020 Acura RDX and Lights For Rebuild On Utility Trailer
    Since your 2020 Acura RDX did not come with trailer wiring you are going to need the T-One Vehicle Wiring Harness # 118804. Then you will be able to connect and pull your trailer with a Ball Mount # DT49MR. For your utility trailer if you are looking to install new Tail Lights # M844 & # M844L you might consider changing the Wiring # A25W2GWB harness as well if it is damaged. We also have the Fender Light # MCL180ARB if your trailer uses these style lights.
    view full answer...
  • Will Trailer Taillights Flash if Emergency Flashers are On
    Hey Mike, yes when you turn on the emergency flashers of your vehicle the trailer taillights will both flash since that circuit is connected to the stoplight circuit.
    view full answer...

Do you have a question about this Trailer Light?


Info for this part was:

Employee Jameson C
Expert Research:
Jameson C
Employee Jacob T
Video Edited:
Jacob T
Employee Kathleen M
Installed by:
Kathleen M
Employee Randy B
Installed by:
Randy B
Employee Daron K
Edited by:
Daron K
Employee Zach D
Video by:
Zach D
Employee Michael B
Video by:
Michael B
Employee Shane H
Test Fit:
Shane H
Employee Brian T
Written by:
Brian T

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