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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
Great product and price.
Was what i need they have everything you may need GREAT COMPANY
It was exactly the product I was looking for and it came on schedule.
Perfect... nice and bright
these guys got it figured out. always lots of parts and good service.
charles dumont
Fits! Great tracking.
Ordered these as a replacement. Delivered on time and in great condition.
Product was shipped quickly and fit the needs for my trailer. Excellent Service!
I HAVE YOUR PRODUCT MC11AB. ONCE I GOT THEM MOUNTED THEY LOOK GREAT. THEY SHOW UP GOOD A NIGHT TIME. MAKE MY TRAILER MORE NOTICEABLE IN DAY TIME WHEN I AM TURNING. I WILL RECOMMEND THEM TO ANY ONE.
these products were sent in a timely manner and were exactly what we needed. Great customer service.
Same as on on trailer. Got as a spare. No question it will be correct same as came off. Oem part.
Great service -- thanks for your diligence. One problem (it's okay) I had no way of knowing that bulbs would be included and I ordered 4 extra bulbs (I figured I could salvage 4 more out of the broken lenses I had). I think your description should include that the unit had a bulb.
Exact replacement part. Excellent price. Very quick delivery.
High quality marker lights. Easy to install. Wedge bulb base makes it easy to upgrade to LEDs.
Good little clearance light. Even better service from etrailer.com
for the price it works well the best thing is e-trailer shipping, always delivered earlier than expected and very well packaged. Thank you all.
As described, prompt shipping. These could be a little heartier in terms of plastic strength against chips and cracks but I think that's par for the course
good product. hard to find the older style incandescent clearance lights anymore since almost everyone is going led now. plan on replacing some non working clearance lights on my trailer.
We purchased a # of Clearance Lights thru etrailer for a Project. Excellent Folks to deal with, Good pricing, Good Products. What more do You need out of a Company ? Best, PawPaw C
Easy to install and work. Side markers on my Car trailer.
Dave B.
4/11/2015
Work great, easy install for a great price.
No issues. Work just fine. Get what you pay for.
I bought these to repair some lights that had broken on my small utility trailer. They fit perfectly and work. What else can you ask for? I ordered some extra bulbs and more red and amber lights like this so in case more lights break or burn out, I will be ready for it. Thanks for your prompt delivery. Charles
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
These were actually used as temporary signals for my 67 chevelle. And they work fantastic. Pretty bright too.
Much easier than other types of marker lights because of the fact there is no ground wire, just power. It made the installation process so much quicker. Great product.
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!
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Lew
11/23/2022
Great