If your trailer sees water, this light is built to handle it. The housing and lens are sealed together as one waterproof unit, so it can be fully submerged without letting moisture inside. That sealed build keeps the circuit board protected and ensures the incandescent bulb keeps working even after dunking at the ramp or driving through storms. It’s a dependable setup that helps prevent flickering or corrosion over time.
When it’s dark out, being seen matters most. This round amber light is P2 rated, producing a 45-degree beam to either side of centerline for a total of 90 degrees of coverage. It’s visible straight on, making it ideal as a clearance or side marker light when you pair them properly. The bright amber lens over the incandescent bulb gives a clean, easy-to-see signal so other drivers can spot your trailer clearly.
This 2-1/2? round light sits neatly in a recessed grommet mount (sold separately), keeping everything flush and protected from bumps or snags. You can reuse an existing hole or cut one if you’re adding new lights. It accepts an industry-standard 2-prong plug for straightforward wiring, making the setup neat and secure without extra brackets sticking out.
A built-in reflex reflector means you don’t need to add a separate reflector to meet safety requirements. That integrated feature simplifies installation while improving visibility when your trailer is parked or unlit. It’s one less part to buy and one less thing to maintain—just a simple, effective setup that works day or night.
Sometimes simple is best. This light uses a premium incandescent bulb rated for up to 15,000 hours of use on a 12V DC system. With that kind of lifespan, you get steady, reliable illumination without worrying about early burnouts or weak light output. It’s built for users who just want their lights to work every time they plug in and hit the road.
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Today we're going to take a look at the Peterson trailer clearance or side marker light. In addition to being a light itself it also has a reflector, as you can see there, to have visibility even when we're not using our trailer and we don't have our lights on. It'll stay be visible even at night when the light shines on it.This is going to be a submersible light. It is an incandescent, so you might be able to see the bulb there from the side. It's just a single bulb design, and at the back we'll have our two prongs that we can connect to our wiring and get hooked up.With our plug in place, that'll give us our lighting functions. Our light function.
Turn the studio lights out so you can see just how bright that is, even in low-light. So not blindingly bright, just enough to make us visible at night. And this light is going to be P2 rated, so basically that means that from the front, we'll be able to see it until about a 45 degree angle. And then the light starts getting dimmer as far as visibility.So if you want this to be a side marker and a clearance light, you'll need to have two. One on either corner of your trailer.The wiring prongs are sold separately.
You can find those here at etrailer.com. This one from Peterson is going to be part number B431-49. And you can also get a grommet that's a recessed mount, which will look like this. And this part number's going to be 142-18. That just is going to add a little bit of extra shock absorption for our light.
It kind of cleans up the look. We'll still have plenty of room for our wires to come through. But overall just sort of completes the look of our housing.Again, this is sold separately. You can find it here at etrailer.com. Now with the grommet in place, our light will be about three and three quarter inches wide.
But the light on its own will be just two and a half inches in diameter once I get it peeled out of here.So you can see there, two and a half inches in diameter. And then seven eighths of an inch deep. That's going from the inaudible 00:02:48 of the light to the back where those terminals stick out.Again, it is an incandescent bulb. This is going to be all DOT compliant, P2 rated, and it's made in the USA.And that's going to do it for our look at the Peterson trailer clearance marker light.
Customer Satisfaction Score:
99% were satisfied with this product
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Ratings & Reviews
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
Nice bright and clear nice price use as clearance lights on my boat trailer
Exact replacement on 1998 United Expressline 7x14 box trailer. Also replaced license plate light with holder.
I ordered these lights for my boat trailer. The description of these lights were very detailed and made me confident they were exactly what I needed. I recieved the lights in a timely manner and they were exactly what I needed .
I needed a replacement running light for my open trailer. I had hit the corner light with my lawn mower and broke the lens and body! After a quick search I found etrailer.com had exactly what I was looking for. The same exact light that was over five years old! I only needed one but ordered three, one to replace the broken one and two spares, just in case. I received my lights in a matter of two days and couldn't believe the low price. I was extremely pleased that I was able to find the EXACT light I was replacing at etrailer.com and recommend etrailer.com to anyone needing lighting solutions.
This is an EXTREMELY difficult light to find. I called by boat trailer manufacturer (EZ Loader) and they said that Wesbar made these wedge lights since the early 1990s and 2 years ago they had stopped making them? This light is a PERFECT replacement to that Wesbar wedge light that has been discontinued. E Trailer is an AWESOME company. This is my 5th order and I cant say enough good things about this company. Extremely helpful folks - fast shipping and superior products. REALLY pleased.
Always excellent customer service and fast shipping
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!!
These lights were exactly like the lights I had to replace on my boat trailer. I was able to easily select what I needed, and they shipped the same day. Installation was simple. I did have to use a mounting screw larger than the ones provided only because the existing screw holes were larger than the provided screws. I which I would have known about them sooner.
Fit perfectly. Exact fit.
GREAT product - FAST shipping!
Great product and fast shipping
All went well. Thanks and good luck.
This light was exactly like the other lights on my horse trailer and matched perfectly. Thank you.
Replacement for 2015 Itasca Ellipse Front clearance lights.
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