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Peterson Trailer License Plate Light - Submersible - Incandescent - Gray Housing - Clear Lens

Peterson Trailer License Plate Light - Submersible - Incandescent - Gray Housing - Clear Lens

Item # M439K
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M439K - Rectangle Peterson Trailer Lights
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3-3/8" x 1-3/4" Rectangle. Waterproof, incandescent trailer light illuminates your trailer's license plate. Durable polycarbonate housing and lens. Surface mount with mounting ears - hardware not included. Accepts standard 2-wire plug. Lowest Prices for the best trailer lights from Peterson. Peterson Trailer License Plate Light - Submersible - Incandescent - Gray Housing - Clear Lens part number M439K can be ordered online at etrailer.com or call 800-298-8924 for expert service.
  • All Info
  • Reviews (58)
  • Q & A (10)
  • Photos
  • Why etrailer?

Peterson Trailer Lights - M439K

  • License Plate Lights
  • Rectangle
  • Incandescent Light
  • White
  • Surface Mount
  • Submersible Lights
  • Peterson

3-3/8" x 1-3/4" Rectangle. Waterproof, incandescent trailer light illuminates your trailer's license plate. Durable polycarbonate housing and lens. Surface mount with mounting ears - hardware not included. Accepts standard 2-wire plug.


Features:

  • Compact light illuminates your trailer's license plate
  • Sonically sealed, waterproof housing and lens unit is submersible
  • Durable polycarbonate housing and lens
  • Clear lens over incandescent bulb
  • Compatible with 12V DC systems
  • Surface mount to trailer - hardware not included
  • Accepts industry standard 2-prong plug (142-49 sold separately)
  • Made in the USA


Specs:

  • Dimensions: 3-3/8" long x 1-1/4" tall x 2-3/8" thick
  • Distance between mounting holes (center on center): 2-3/4"
  • 1-Year limited warranty


Manufacturer Cross Reference

Light will work as an exact replacement for:

Optronics # LP97CB


Peterson 439 License Plate 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.


Surface-Mount Light


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.



M439 Peterson License Plate Trailer Light - Submersible - Incandescent - Gray Housing - Surface Mount - Clear Lens




California residents: click here



Customer Reviews

Peterson Trailer License Plate Light - Submersible - Incandescent - Gray Housing - Clear Lens - M439K

Average Customer Rating:  4.9 out of 5 stars   (58 Customer Reviews)

3-3/8" x 1-3/4" Rectangle. Waterproof, incandescent trailer light illuminates your trailer's license plate. Durable polycarbonate housing and lens. Surface mount with mounting ears - hardware not included. Accepts standard 2-wire plug.

- M439K
by:

Great service. Quick delivery! 880338



- M439K
by: 08/26/2020

868732



- M439K
by:

Good company to deal with 775927



- M439K
by:

Good company to deal with 775925



- M439K
by:

Exactly what I wanted. Great price and quick shipping. Highly recommend etrailer 661200



- M439K
by:

Not extremely bright, but worked OK on my trailer tag. Police are commonly pulling people over now days for not having a tag light. 649430



- M439K
by:

etrailer had the light that no one else had... Ill be checking with them first on future items,, Thank You etrailer !!! 648078



- M439K
by:

This light fit just as I expected. Great 616872



- M439K
by:

First time working with etrailer.com and must say that web site made my purchase an easy one. Would not hesitate with future purchases. The license plate light was for an enclosed snowmobile trailer and I was in need of a replacement that was a simple R&R. The unit was a perfect match along with the hole pattern for mounting. I also had some self taping stainless steel screws that I used to mount the unit due to chemicals used on the road (during winter months) cause corrosion in the NE and wrecks havoc where there is an exposure. 589309



- M439K
by:

Easy order, quick service. An exact replacement for my trailer. Thanks 572154



- M439K
by:

Great product, easy to install, works g reat. 550980



- M439K
by:

Perfect OEM replacement light and even came with an extra pigtail connector....I am very pleased with this light so far. 539626



- M439K
by:

Exactly what I was looking for. 515209



- M439K
by:

This company is on of the best places to order your parts from. This is the second time I was able to place my order and get what I wanted without all the fuss of waiting. I was looking for a waterproof light for the boat trailer, checked other sites, the internet, boat places, etc. couldn’t find what I liked. Then I remember etrailer I order new hubs from. They had what I was looking for. Should have called them first. Make sure and talk to Pat. 487186



- M439K
by:

This trailer license plate light was exactly what I needed. The order process was quick and easy and the light arrived within 5 days. I am very pleased. 452185



- M439K
by:

Excellent product and easy to install. 443183



- M439K
by:

worked great, got here quickly 433929



- M439K
by:

great product works real good 412510



- M439K
by:

Great light, great price. Thanks again 372305



- M439K
by:

Good Product, came exactly as described, well packaged and very quick service. 348087



- M439K
by:

Still burning bright a year after purch ase! 341364



- M439K
by:

I needed 5 different kinds of lights for my boat trailer since they had all burnt out. Etrailer had all of them in stock. They were shipped out the same day I made the call. Three days later they were delivered. Steve Z helped out a lot with my phone order. They get 5 stars from me!! 325153



- M439K
by:

Great product ! Excellent service ! 311005



- M439K
by:

Easy to install and works perfect. 303874



- M439K
by:

Etrailer had what I could not find loca l. 300094


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Ask the Experts about this Peterson Trailer Lights

  • What to Do if the Peterson License Plate Light M439K Burns Out its Bulb
    So that it's watertight the Peterson Sealed, Trailer License Plate Light # M439K that you referenced is sonically welded. There is no way to replace the bulb. You would just have to replace the entire light.
    view full answer...
  • What is the Difference Between M439 and M439K Trailer License Plate Lights
    The Peterson Sealed, Trailer License Plate Light, Ear Mount, # M439K, comes with a mounting bracket. I could not bring up the M439. But according to the manufacturer M439 does not come with a mounting bracket. For a license plate light, you might also be interested in Heavy-Duty, LED Trailer License-Plate Light with Mounting Bracket, # LPL55CB. This light comes with a mounting bracket.
    view full answer...
  • Replacement Trailer Lights for 1999 ProCraft Boat Trailer
    We carry a broad range of trailer light replacement lenses as well as replacement lights and complete trailer lighting kits. The linked pages will display both license plate lights like # M439K and individual replacement parts like lens kit # W003372-73. You can sort the results shown by using the click-on filters on the pages. Usually the part number for a trailer light appears on the light base, rather than on the lens which usually displays only SAE/DOT info. I did find many photos...
    view full answer...
  • Availability of LED-Version of Petersen License Plate Light # M439K
    Peterson does not offer an LED-type version of their incandescent License Plate Light # M439K but Optronics does offer their # LPL41CB, which is a Heavy Duty Trailer License Plate LED Light. This unit is also an ear-mount type, features a chrome-plated housing, 5 LEDs and a 2-wire hookup. I have linked a review video for your reference. The mounting hole spacing on the # M439K is 2-3/4-inches center-to-center. The mounting hole centers for the Optronics light are spaced at 3-1/4-inches....
    view full answer...
  • What Are Center To Center Dimensions Of Mounting Holes On Peterson Trailer License Plate Light
    The mounting holes on the Peterson Sealed, Trailer License Plate Light, part # M439K are 2-3/4-inches center-to-center. I have attached a photo of the light with the mounting dimensions noted. This light has a polycarbonate lens and is sonic welded for a watertight seal and also includes the wiring plug.
    view full answer...
  • Looking for a Trailer License Plate Light that is Submersible
    All of the license plate lights we have that are listed as submersible are incandescent, not LED. We have Peterson light # M439K and Optronics light # LP97CB. Though the lights are submersible you will need to make sure the wiring connections are water-tight by using something like liquid electrical tape, # SWC50122.
    view full answer...
  • Availability of LED License Plate Lights
    We do have some LED license plate lights. You could use # LPL31CB or # LPL41CB. I have included some links to video reviews for each of these lights for you.
    view full answer...
  • Power Connection of a Trailer License Plate Light on a 1997 Dodge 1500 Van
    The Peterson Sealed, Trailer License Plate Light, Ear Mount, part # M439K does not have a receptacle to plug into a cigarette lighter. You will need to splice the black wire from the back of the light into the Dodge Van running light circuit behind one of the the vehicle taillights, so that it will illuminate whenever the running lights are on. The white wire will need to be connected to good ground point.
    view full answer...
  • Availability of a License Plate Light that is Made in the U.S.A.
    I went out to the warehouse and pulled Peterson license plate light # M439K. The packaging does indicate that it is made in the USA. I have included a link to a video review of the light for you.
    view full answer...
  • Recommendation for License Plate Lamp to Shine Upward
    My best suggestion would be to use a bracket like the Steel Trailer License Plate Mount Bracket, # LP20SB, with the Peterson Sealed Trailer License Plate Light, # M439K, and mount the bracket upside down. This would give you a lamp below the license plate that would shine upwards. Before making a purchase, I do recommend contacting the Department of Transportation just to make sure that mounting a light that shines upward would not violate any of their regulations. Please also keep...
    view full answer...

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Info for this part was:

Expert Research:
Robert G
Expert Research:
Patrick B
Expert Research:
Michael H
Expert Research:
Adam R
Expert Research:
Jeffrey L
Installed by:
Cole B
Updated by:
Sarah W
Updated by:
Brian T

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