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When you’re hauling a wide trailer, having a clear and compliant ID light bar is a must. This Peterson Mini Identification Trailer Light Bar uses three 194 incandescent bulbs under a red lens to mark the rear of trailers over 80" wide. It’s DOT compliant and built for 12V DC systems, giving you the bright, steady illumination needed for safe nighttime visibility and compliance with lighting requirements.
Rough conditions can take a toll on trailer lights, but this one’s designed to handle it. The powder-coated white steel base resists corrosion and keeps the lights secure. The housing’s solid construction means you get reliable performance over time without worrying about rust or flaking paint from road spray or weather exposure.
Installing this light bar is quick and straightforward. The surface-mount setup lays flat against your trailer, and the single-wire design grounds through the mounting hardware—no extra wires to manage. With 16-1/8" between mounting holes (center to center), it bolts right into place for a clean, factory-style fit.
When it’s time to service the lights, you don’t have to replace the whole bar. Each of the three Peterson 107R lights is replaceable (part number 422600 – sold separately), so swapping out a bulb is simple and affordable. That keeps your trailer legal and visible without extra hassle or cost.
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Today we're taking a look at a Peterson Identification Light Bar for trailers. Now this unit contains three red lights as you can see right here on the base. It does come with a bulb for each one so it comes with 3 193 incandescent bulbs that are replaceable. To replace them all you need to do is take a flat blade screwdriver, place it here in the clip, extend the clip out, and that will allow you to actually remove the lens from the base. And then you can remove each light as needed, so if it ever burns out you just take it and it removes right there from the base. You can place in your new one, again, type 193, that's the number printed on the actual bulb, and it just fits back into the housing.
So it's really nice, it's really easy to do, very easy to make your replacement when and if needed. And then the lens just simply pops back into place, that's all there is to it, really nice easy design when it comes to replacing those bulbs.But again it comes with 3 red lights each one does come with a 193 incandescent bulb, so those are included. Those sit on a white steel base, it has that nice white coating on it to resist rust and corrosion, mounts directly to the surface of your trailer so you have these mounting tabs on the end, one over here and one right here. It's a one wire design so this is your power wire and then it grounds through the mounting hardware. It is department of transportation compliant.
I did take a measurement of the overall length, so edge to edge gave us a measurement of 16 and 1/2 inches long. And then measuring edge to edge go in this direction it's about 1 and 1/16 inches, and the overall depth that's from the outermost point of the lens to the back of it, right here, back of the unit is about 1 and 7/16 of an inch to an inch and a 1/2. And then our mount holes on this unit are separated on center by 16 and 1/8 inches.We're going to go and hook it up to power that way you can see what it looks like with some power running to it. We'll also turn off our overhead lights so you can see in a low light setting. So you can see here that it sends out a nice consistent signal, again, this contains three incandescent bulbs and it has the red lens on it, so that's three red lights.
And this unit functions as an identification light bar for your trailer. That's going to do it for today's look at the Peterson Identification Light Bar for trailers.
Ratings & Reviews
Needs all my needs. Plus can replace individual lamps if just one breaks.
Easy to wire and easy to install. Have held up great (1yr so far).
GREAT SERVICE AND FAST
It is the right one and fits
Tha nks
Looks good exact replacement
Closest match to what is being replaced. Not yet installed.
Jack
3/27/2023
Excellent. Bought a 30-year-old livestock trailer and replaced all the lights and added battery backup for the electric brakes. Did not want to convert to LED. As good as new.
Heather A.
4/4/2023
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The products that I bought are functioning perfectly. No complaints.
Thank you.
Elio. T.
2/19/2021
Still working. No complaints
Perfect replacement for our 1996 Circle J horse trailer.
Everything was great.
Exact replacement for the one on my 23 yr old horse trailer.
Direct replacement for the broken set on my enclosed trailer.
The ordering process was easy and the product was exactly as described, it replaced the OE part exactly.
etrailer.com keep us legal and safe with big selection, great prices, and quick shipping.
Don't hesitate if you need something and call them if you can't find it - these are good peoples!
The product was as advertised.
Great quality
Everything was fine
This was an exact replacement for the light bar on my wife's horse trailer. It looks nice and was easy to install. The problem that I have with it is that I wish it were made stronger. The metal is thin and flexes quite a bit. Also, the material holding the light covers in place is plastic and the old light bar had to be replaced because the plastic got old and brittle and fell apart. I would spend more money for one that was built tougher.
The light bar was a direct replacement,fast delivery and at a good price
Outfitted old trailer with new lights and brackets. Delivery was right on time and everything worked great
This light bar was the perfect price and replacement for the light bat that was ageda dn lense flaps broken.
The postal service faild me and etrailer saved me by reordering it and changed the shipping so i would get it ...Thank you
Leonard
3/19/2025
The light are working great still but i may need to reorder after catching one with the blade of my tractor
The exact part that I need and it was the exact part I ordered.
Works great !
Exact replacement. Perfect.
The Peterson trailer marker light bar is excellent quality and easily installed with drilling two holes and using self tapping metal screws (not included. I had attempted to replace the bar light covers on the previous rear marker ligh bar, (not from Peterson) but although it was only a couple of years old and the Peterson covers fit, the plastic snap in tabs were so stiff and brittle that they snapped off easily. That’s something you might consider. I could have super glued everything together and remounted the old one but the new light bar was economical and more cosmetic so I just replaced the whole setup. Altogether a cheaper and more time efficient solution. Thanks to Peterson for the excellent repair parts.ETrailer was my best resource for the parts and the parts were economical. Communication was excellent. The parts were well packaged for shipping and shipped quickly. I was contacted by email right after the delivery to verify everything went well. Thanks to ETrailer for a smooth and easy transaction plus delivery.
Christopher H.
8/25/2026
Thanks for sharing Rex and we really appreciate the photo and video! Glad this replacement saved you some time.
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David
10/9/2025
Perfect