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Peterson Clearance or Side Marker Trailer Light - Submersible - Incandescent - Round - Amber Lens
Peterson

Peterson Clearance or Side Marker Trailer Light - Submersible - Incandescent - Round - Amber Lens

Part Number: 425850
In Stock
$4.85
Retail:$15.36
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2-1/2" Diameter round. Waterproof, incandescent trailer light functions as a clearance or side marker light. Premium bulb for long life. Recessed mount with grommet (not included). Accepts standard 2-prong plug. PC rated. Great Prices for the best trailer lights from Peterson. Peterson Clearance or Side Marker Trailer Light - Submersible - Incandescent - Round - Amber Lens part number 425850 can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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  • Reviews (589)
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  • Videos (2)
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Peterson Trailer Lights - 425850

Highlights

  • Reliable In Any Weather: Sealed, waterproof housing keeps water out for lasting performance.
  • Two Functions in One: Works as both a clearance and side marker light when properly mounted.
  • Bright, Long-Lasting Bulb: Premium incandescent rated up to 15,000 hours for dependable visibility.
  • Wide 180° Coverage: PC-rated beam spreads 90° each side for clear front or rear visibility.
  • Simple 12V Hookup: Uses a standard 2-prong plug for quick, clean connection.
  • Easy Recessed Fit: Mounts with a grommet (sold separately) for a secure, flush finish.
Made in USA

Features to know about

Brighter and Reliable Illumination: 2-1/2" Amber Incandescent Light

This 2-1/2" round amber light uses a premium incandescent bulb that delivers up to 15,000 hours of consistent illumination. It works as both a clearance and side marker light when properly installed, giving dependable visibility on the road. Running on a standard 12V DC system, it’s an easy way to get bright, steady light without complex wiring or adapters.

Built for Wet Conditions: Fully Sealed and Waterproof

Water and corrosion can ruin lights fast, but not here. The housing and lens are sealed together to keep moisture out, making this light waterproof and ideal for use where submersion or heavy splash is common. The sealed circuit design keeps everything protected so it keeps shining strong, even after repeated exposure to water.

Wide Visibility Coverage: PC-Rated for 180-Degree Light Spread

Visibility from every angle makes towing safer. This PC-rated light puts out a 90-degree beam to either side of center for a total of 180 degrees of coverage. That means it’s visible from the front and side at once, serving as both a clearance and a side marker light when mounted correctly. The wide pattern helps others see your trailer sooner in low light or at night.

Straightforward Mounting: Recessed Design with Standard Plug

Installation stays simple thanks to its recessed mount setup. It fits into a grommet (142-18 – sold separately) and accepts an industry-standard 2-prong plug (142-49 – sold separately). If you’re replacing an existing round light, you can reuse the same hole; if it’s a new install, just cut the opening or use a mounting bracket. Either way, it goes in clean and secure without extra drilling or custom brackets.

Specs

Dimensions

  • Dimensions: 2-1/2" diameter x 15/16" thick

Dimension diagram of Peterson 142A amber round clearance and side marker trailer light showing 2-1/2 inch diameter and 15/16 inch thickness.


Warranty

  • Warranty: 1-Year limited warranty

M142A Peterson Clearance or Side Marker Trailer Light - Waterproof - Incandescent - Round - Grommet Mount - Amber Lens - PC Rated





Video of Peterson Clearance or Side Marker Trailer Light - Submersible - Incandescent - Round - Amber Lens
Video Thumbnail Video Player Dialog

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




Video Transcript for An In-Depth Look at the Peterson Clearance or Side Marker Trailer Light

Today, we're going to be taking a look at the Peterson Trailer Clearance Light. This is going to be a nice round lens, amber light to help you stay visible out on the road, and also stay compliant with all DOT laws. We'll have our two prongs to the back, so that we can get that mounted up to any of our wiring harnesses that look the same. It's a standard size, so there's a lot of different little wiring harnesses that'll work with this. Just plug that into the back. It does come with some dielectric grease on there, so you might notice there's some sticky stuff.

That's just to help keep that connection. It helps to keep those prongs from any kind of corrosion, so it's a more water tight seal, and also keeps them from rusting out. Now, we'll disconnect our wires, have white to ground, black to power, then we can show you what this bulb looks like when it's lit up.Flipping on my power source here. You can see our single bulb will light up. It is an incandescent bulb, and doesn't really look like that lens can be taken off, so as far as maintenance, pretty much just as you see it there, you might be able to pry that cover off, but probably would be better off just to replace the whole light if that bulb ever does burn out on you.

I'm going to turn the lights out in the studio so you can get a better idea of how bright that is in low light situations. So, even with just that single bulb, it's still fairly bright, so that'll provide a warning to other drivers to see where the perimeter of our trailer is. I'll turn off my power. Disconnect the plug at the back here. And let's go over some measurements.

It measures about 2 1/2 inches in diameter, that's going from this more flared out edge at the bottom or the back of the light depending on how you want to look at it, and then it stands about 3/4 inch tall. Overall, really nice, easy to use light that should get you back out, and on the road. And that's going to do it for our look at the Peterson Trailer Clearance Light.

Customer Satisfaction Score:

Ratings & Reviews

4.8

589 reviews
Review sort icon
2-1/2" Diameter round. Waterproof, incandescent trailer light functions as a clearance or side marker light. Premium bulb for long life. Recessed mount with grommet (not included). Accepts standard 2-prong plug. PC rated.

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Fast service



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Easy to install



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good product. thanks



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Exactly what I needed



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Put it on and never used the trailer si nce



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Products ordered were just a s described at a great price and free shipping. Shipping was also very fast.



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It was the exact replacement part and is still working a year later, thank you.



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Great product and good price. The staff at etrailer are very helpful. I will definitely order again



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they worked fine replacing my broken li ghts.



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Exactly what I was looking for. Great price & shipping cost reasonable



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I purchased these based on a specific delivery date, after I placed my order that delivery date changes significantly by 5 additional days! I called to see what happened, of course all the blame went to the USPS. I asked if there's anything we could do to remedy the situation, nothing at all. I was stuck without my parts. Some creative thinking might have helped?? I did place another order on Amazon and received the same item in 24 hours, on time and allowed me to complete my project. I was trying to give your company a chance with my business, however, not thinking of other ideas, methods, etc. can eliminate you over time? I finally received my order and now they're spare parts for me. I hope you consider this feedback as constructive criticism, I'm trying to support other businesses. Thanks



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Great lights that arrived extremely fast and were already pre lubed with dielectric grease. Very satisfied and would definitely recommend



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I love how helpful and knowledgeable the customer service people are! The videos are very helpful too. I will do all my trailer parts buying with etrailer



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Easy in kind replacement.


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See what our Experts say about this Peterson Trailer Lights


Info for this part was:

Employee Kathleen M
Installed by:
Kathleen M
Employee David F
Installed by:
David F
Employee Laura H
Updated by:
Laura H
Employee Wilson B
Updated by:
Wilson B
Employee Brian T
Updated by:
Brian T
Employee Cole B
Video Edited:
Cole B
Employee Chris R
Video Edited:
Chris R
Employee Aidan B
Video by:
Aidan B

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