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If you like the clean, timeless look of chrome but still want a dependable light, this rectangular 3-3/4" x 2-1/4" Peterson clearance or side marker light fits the bill. The chrome-plated ABS housing gives it that polished finish while holding up well to everyday use. Behind the red lens sits a premium 194 incandescent bulb that delivers up to 15,000 hours of light, drawing just 0.25 amps at 12V. It’s built for those who prefer the warm glow of a traditional bulb paired with solid construction.
No need to fight with complicated wiring setups. This light mounts flush using the included stainless steel screws and only needs a 1-1/4" diameter socket hole. The twist-in socket has a straightforward 2-wire design—one lead for power and one for ground—making it easy to connect and secure. It’s a clean, no-fuss install that looks neat once in place.
Durability matters when your lights face weather, road grime, and vibration. The chrome-plated ABS housing resists cracking and corrosion, keeping the red lens bright and intact over time. It’s DOT compliant and carries a P2 rating, producing a 90-degree beam spread (45 degrees on each side of centerline) that meets clearance or side marker standards.
When it’s time to replace older lights, this unit drops right into place without extra drilling or adapters. It’s an exact match for Optronics #MC71RS and Grote #47052, so you can refresh your setup with confidence knowing it fits perfectly and lines up with existing holes spaced 2-11/16" center to center.
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 Petersen clearance or side marker trailer light with the red lens and the chrome plated base. Now this is an incandescent trailer light that will function as a clearance or side marker light when properly mounted. The premium bulb provides up to 15,000 hours of light, and it's all in this durable chrome plated ABS housing. Has the red lens that's over the incandescent bulb, and this light is compatible with 12 volt DC systems. It is a flush mount design to the trailer, with the included stainless steel screws, and it requires about a one and a quarter inch diameter socket hole for a flush mount installation. It is a twist in socket.
You can see twisting it, you can remove it, and here's your bulb, and then to put it back in, you just turn it and twist it into place. It does contain two black wires, a lead and a ground wire, and it doesn't matter which is which. It's not polarity sensitive, so you can pick either connection to either wire.It is a DOT Department of Transportation compliant light, P2 rated. It is made in the USA. A few dimensions on this.
Overall length on the light including the base is right at three and three quarter inches. Height on it is two and a quarter inches tall, and the total depth on it from the very end of the socket here to the face is going to be right at two and one sixteenth inches. Distance between the mounting holes where the screws are is going to be two and eleven sixteenths inches, and the bulb type that it uses is either a 194 or a 193 bulb. Power draw for this light at 12 volts is 0.25 amps, and last thing I want to do is we're going to hook this up to some 12 volt power just to show you how bright it is. And as I mentioned, they're both black wires, so it doesn't matter which wire is power and which one's the ground.
We got it all hooked up.Go ahead and turn the power on, and you can see the light comes on. I'll go ahead and turn off the overhead lights, and there's your clearance or side marker tail trailer light. Go ahead and turn back on the overhead light. Disconnect our wires. But that should do it for the review on the Peterson clearance or side marker trailer light with the red lens and the chrome plated base..
Customer Satisfaction Score:
97% were satisfied with this product
3% of customers were not satisfied
Ratings & Reviews
Great product, easy installation, great price.
Nice product overall. Screw holes didn’t line up perfectly, so it took an extra minute to install. I strongly recommend this vendor.
A good fit for my broken old part. When trailers get old it can sometimes be hard to get a proper replacement part.
Correct product and delivered in a timely fashion.
Light is exactly as described, service from etrailer.com was outstanding - order shipped same day, and I received it very quickly.
One year later the trailer lights are still working like new.
I have ordered several time at etrailer and every time has been like I'm the first customer on their list. My order was always shipped and delivered in short time and in good condition. No issues at all. I highly recommend etrailer to everyone.
Like the looks of them, have not installed them yet
The trailer lights were exactly what I was looking for. Price was pretty average and online buying was easy. They shipped and arrived extremely fast and that to me shows this companies pride in customer service. I highly recommend Etrailer.com
I have ordered a variety of repair parts from etrailer on a couple of different occasions. They seem to have a very good selection of parts that I can easily identify as the correct replacement part. They have had parts that the large RV stores in town did not have available. They get the shipment out FAST and correct. Everything I order is of great quality. They are now my first choice source.
It was as described.
Perfect item shipped and received quickly. Not as big an order as usual, but handled as if as important as big order.
Like the fact that bulb was incandescent to match rest of 1991 BlueBird Wanderlodge lighting. An LED bulb just would not have matched other lights.
Thanks again,
Bill
I ordered 5 of these clearance lights, with two, separate orders. My second order was placed over the phone with Kevin, at etrailer. He was very helpful and ordering was done easily. Both orders delivered quickly. Great experience.
Used as replacement on our 1996 Circle J horse trailer. I ordered the identical Peterson light that was on the trailer from the factory hoping for a simple swap. These lights seemed to have been redesigned. The originals on the trailer had separate mounting holes so I ended up having to modify each light to mount using the existing holes. I also had to make the center hole for the fixture larger on the trailer. Not a deal breaker but ended up taking a lot longer than I was anticipating.
i bought a 2003 Ford F550 with a contractor bed. One of the original Peterson lights was damaged. I bought the Peterson marker light and a reflective lens and put them together to match the original 2003 light perfectly. I also installed the matching Peterson reflectors to pass Delawarew inspection. Except for the damaged one, all the other Peterson lights are still working on the truck, but I bought a spare for each color just in case, Since the original lights are almost 20 years old.
Matches the other 5. Looks and works great. It’s the furthest to the right in the photo.
Exactly what I needed to replace the lights on my motorcycle. Fast delivery.
Had to do some modifications for attaching to the trailer
It does what it is supposed to do, shine.
They look just like the picture
This will replace corroded marker lights on a Phaeton IV Excalibur classic car that is in restoration. Photos to be sent in a few months.
Great product, boat trailer looks awesome now!!!
As others have said, the design has changed a bit. The "old" style mounted the bezel via a couple of holes beneath the lens. The "new" style mounts the bezel and lens through the same holes. Not a huge deal, but one to be aware of. Otherwise they are the same thing dimensionally and the lens are the same.
Fits aftermarket Harbor style bumper on 1999 Dodge Ram PERFECT
Designed different that the original. Have to enlarge the hole for mounting,which was a pain in the rear. These also have a ground wire where the orginal did not. Had to get creative to ground the fixture since I did not have access to the back.
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Gwendolyn Y.
1/22/2026
WOW, That's a pretty awesome ride, Dale! I also shared this with my dad because I know he will think its pretty cool too.