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If you just need a dependable light that works every time, this rectangular incandescent clearance and side marker light keeps things straightforward. At 3-3/16" long by 1" tall, it mounts easily with 2-3/4" center-to-center holes. The single-wire design grounds through the mounting hardware, so wiring is simple—just connect power to the black lead and bolt it down to clean metal. It runs on 12V DC and draws only 0.4 amps at 12.8V, giving you consistent brightness without extra power demand.
Road grime, vibration, and bumps can wear out weak lights fast. This one uses a tough ABS housing and an amber snap-on lens that protects the replaceable 194 bulb inside. The solid housing resists cracks, while the lens pops off easily if you ever need to swap the bulb. It’s built for long service without needing special tools or complicated maintenance.
When you’re marking the edges of your trailer, you want focused light that meets regulations. This P2-rated light throws a 90-degree beam pattern—45 degrees to either side of centerline—so other drivers see it clearly from straight on. It can serve as either a clearance light or a side marker light when properly mounted, keeping your setup compliant and visible in low-light conditions.
Swapping an old cracked or burned-out light is easy here because this unit works as an exact replacement for several major part numbers such as Uni Bond #ML1020A, Truck Lite #26306Y, Grote #46883, Peterson #107WA, and Bargman #40-39-002. You can bolt it right into place without drilling new holes or changing your wiring layout—just plug in, mount up, and you’re done.
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Today we have Optronics Mini Trailer Clearance Light, part number MC11AB. This is a surface mount light that attaches with mounting holes that are 3 inches on center. Both the lens and the bulb are user replaceable. On the back of the light, we have our wire lead, that will be our power source and this mounting hole doubles as our electrical ground. Now we will hook it up to our power supply so you can see how the light works. We will take our ground connection and clip it to the mounting hole with the metal contact, and we will hook our power contact to our wire lead. Now we will turn off our overhead lights, so you can see how bright the light is. And that does it for Optronics Mini Trailer Clearance Side Marker Light, part number MC11AB.
Ratings & Reviews
Charles P.
9/11/2015
Theyre still on the utility trailer that I installed them on, working fine, and I am satisfied with the quality and function of the lights
Dave B.
4/11/2015
Work great, easy install for a great price.
Lew
11/23/2022
Great
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Ftfj
2/23/2025
Given as a refreshment gift for my elderly uncle’s trailer, it has mostly remained unused throughout the year, except for one instance when a tree branch was removed after a storm. The lights have kept their original appearance, and while the old trailer still sits dormant, the yard looks only slightly cluttered—helped by these affordable lights. Overall, a great product for the price!