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When you just need a solid, dependable clearance or side marker light, this one delivers. The Peterson 4-1/16" x 2-1/16" oblong light is P2-rated for a 90-degree beam spread—perfect for meeting DOT requirements when used properly as either a clearance or side marker light. The amber lens and built-in reflex reflector help other drivers see you clearly, day or night, without needing a separate reflector.
Swapping out an older or broken light doesn’t have to mean drilling new holes. This light surface-mounts flat against the trailer and uses 3" center-to-center mounting holes for a straightforward fit where most factory lights were installed. You only need a small wiring hole, and the single-wire design grounds through the mounting hardware, keeping things clean and easy to hook up.
Built to handle regular use, the molded plastic base resists cracking and corrosion. Inside is a premium 194 incandescent bulb that can last up to 15,000 hours—plenty for years of night towing or storage yard duty. Running on 12V DC power, it draws only 0.25 amps while producing steady illumination that’s easy on your electrical system.
You don’t have to mess with adding extra reflective tape or parts. The custom-cut lens includes a built-in reflex reflector that bounces light back from headlights even when your bulb isn’t powered. It’s one less piece to install and keeps your trailer visible in all conditions.
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Today we're gonna take a look at the Peterson oblong trailer clearance light with reflector in amber.This is going to be a great replacement or upgrade to your current trailer's clearance light. It's going to have that amber lens, so it's going to act as our side marker or clearance light, and this is going to have an easy-to-replace lens that also acts as a reflector. So it's gonna help to reflect the light as well as allow our light from our bulb to come through. And to remove the lens, it's pretty easy, you just take a flat-bladed screwdriver, place it into the little slot there that's going all the way around the edge, turn it about a quarter to a half turn, and it pops right off. So pretty easy to remove.Now we do have replacement parts for this, so if this ever becomes damaged, you can pop that off and replace it with a new one. Inside, you'll see are bulb and housing.
This is going to be a single-wire design light, so that basically means we just have one wire that we need to run to our power source. And then the light is going to sit on this plate that's going to act as the ground. That plate runs to one of our mounting holes, so when you put your hardware through there, mount it onto the frame or your trailer or wherever you're mounting this to, it will ground-out the light. So one wire for our power, the ground is gonna come from one of our mounting screws, so pretty easy there.We'll have our bulb already installed. That's going to be a 149 type, 12-volt power bulb.
This is rated for 2,500 hours, so should last for a long time. Whenever you need a bulb replacement, it's easy to place that bulb, as well. You just pull it out of its little housing carefully, and you can replace that bulb. We also have replacements for the bulb as well as the lens available here at etrailer.com.The housing just snaps back into place, so pretty easy to install. Again, we'll have our two mounting holes in the back.
Those are gonna be 3 inches apart, from center to center. The light overall is going to measure 4-and-an-eighth long, and it's gonna be 2 inches wide. And measure 1-and-one-32nd of an inch deep.I'll show you what it's going to look like whenever we have it hooked up. Hook up our power wire, and then we can place here our ground to that mounting hole where we have our plate. Turn on our power.
You'll see we get our power there. Go ahead and turn off the lights in the studio so you can get an idea of how bright that light is going to be. As you can see, we get good, constant light. It's gonna be a very bright light, but also you see that reflecting capability of the lens, so it's gonna help to keep us safe, even in the dark.This is gonna be compliant with all DOT standards, and we do have a couple little notches in the light to allow our wiring to go through so it can sit flush against the trailer, or wherever you choose to mount it.And that's gonna do it for our look at the Peterson oblong trailer clearance light with reflector in amber.
Customer Satisfaction Score:
99% were satisfied with this product
1% of customers were not satisfied
Ratings & Reviews
Couldn't find these anywhere,easy to order fast delivery.alot of companies only have newer lights.i have a1993 allegro bay rv.
Just what I needed and at a better price than all the others.
fits perfectly
Lights have one wire and use screw to ground to body. Difficult to find these.
Good service Excellent shipping
Lenses were real good quality. Fast shipping. Good place to get your trailer supplies!
This is the same light I have on another trailer. This is a good size for a marker light and the price is very reasonable.
The pop up trailer I purchased was missing the amber light covers. I had to purchase the whole light for the lens but it beats rewiring the trailer.
We actually only needed the lenses, but the price for the entire light was reasonable and worked as needed on our boat trailer.
We appreciated the precise dimensions and sketch of the lights when selecting the right ones for our application.
Product was easy to find, order and was shipped quickly. Hard to find single wire in just the right sizes that I needed. Will shop again and again and again.
I had four side marker lights on my travel trailer broken one night in an RV park thanks to some useless scum teeny-slimers with apparently nothing to do but destroy other peoples property. The side markers I ordered were in hopes the existing screw holes would match. When the ordered parts arrived and compared to the existing Optronics lights, a perfect match! So much so that I felt inclined to pull the broken lens off the Optronics light and try the Peterson to see if it would fit. Viola! It does. Did not have to change/wire anything! Just popped off the remains of the original lens and pop on the magnificent part received from etrailer! Now I have spare light fixtures AND lamps! And enough spare time to finish off the bottle of wine I had reserved for this effort.
Took me only a few minutes to order and a few days for it to arrive!! It fits perfectly and I know where to come each time one of our employees breaks a light on the trucks!! Great products!! Fast shipping!!
Great company. Got everything ordered, fast response and shipping.
Replacing vintage RV trailer lights no longer available. These are a close match but needed to add a 2nd wire with terminal to mounting screw to complete connections. Do not want to rely on mounting screw for grounding.
Rex
12/9/2022
This has been a long term, part-time restoration project and has not been made roadworthy yet.
SHE'S G00D TO TALK TO
I just received the products. I am trying to decide what size rivets I need, for each item. I wish I had asked you this before I bought them. For the clearance lights, I believe I will need a 5/16 " head, 9/16" length, and 5/32" width rivets. For tail lights I believe I will need 3/8 " head, 5/16" length, and 5/32 to 6/32" width rivets. What do you recommend?
I hooked up my trailer which had been sitting for a year to get ready for inspection. At first only 5 of 22 to lights came on. They were dim. If I put flashers on one of 2 came on and the other lights were flashing also. I tried to clean light bulbs and moved them around. Some times if I moved the wires the lights would come on for awhile. I also cleaned the trailer connection. Finally got 6 of 8 inside lights to work, none of the 8 side clearance lights would work. 3 on the rear did work, along with the license plate light. The tails lights would come on and flash, but brake lights would not come on. Thus I decide to replace all the outside Adam horse trailer lights. To see if this will resolve all the issues.
If replacing the lights does not work, I will need hire someone to rewire the trailer. I have had it since 1994.
The last three years I have had to replace a few light bulbs or wiggle a few light bulbs or wires. Got them to work.
I will let you know when I get the lights replaced, if this resolves the issues. Please let me know the rivet sizes I need. It appears I need 2 different widths for clearance lights. The ground hole seems to 1/16 " smaller in width then the other connection whole.
I presume I will need to drill the old rivets out or grind them down.
I can not submit a rating until I get them installed.
Thanks.
Heather A.
1/5/2021
Thank you for your review. The holes in the light for mounting are a quarter inch inside diameter. That should help you get started with finding the correct rivets. The length of the rivets depends on the thickness of the trailer wall. Since the light grounds through the hardware you will need metal rivets.
Just what I needed!
I’m going to ask for a refund. I was looking for replacement marker lamps for my pop up. The light I received only have 1 black connection (I need 2). Also there are no screws or any type of weather stripping with it. Not happy with these at all. Wayne Miller
Heather A.
3/17/2025
Hi Wayne, this side marker light part # 422800 grounds through the hardware. The hardware is not provided. This is a surface mount light, so we don't really have a grommet available for it. I checked the Peterson website and it doesn't look like they make a grommet for this size. Let me help you get a refund started.
Almost exact match to what I have. Easy install and works well and looks good.
Fast service. Right product.
First time ordering from this company. Will definitely order again.Quick delivery!
Quality products!
Quick shipping and was exactly what I n eeded.
This is a very well made product and essentially identical to the 1970s side marker which needed to be replaced on my trailer. The price was right and the delivery prompt. I highly recommend etrailer!
No one local had a single bulb trailer light. These were exactly what I was looking for there great.
Easy to install and just the right amount of brightness for a side marker. Thanks
Not so much a review on this product
But on the great service I got from etrailer
They shipped the wrong lights by accident
They sent out the correct lights the same day I called them.
Excellent customer service 5 star service!!
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Cristina
7/15/2022
Still I’m great shape! No fading or cracks! Awesome product!!