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When your trailer takes a beating from rocks or debris, this light holds up. The heavy-duty steel housing shields the bulb and lens from impact and corrosion, keeping it working even after miles of use. It’s made for demanding conditions where fragile plastic housings just don’t last.
Wiring doesn’t need to be complicated. The single-wire design on this light makes setup easy—it grounds through the mounting hardware. That means fewer connections to worry about and a cleaner installation that works with standard 12V DC systems.
Visibility matters, especially at night or in low light. This PC-rated light throws a 90-degree beam to each side of its centerline, giving a full 180 degrees of coverage. When mounted properly, it works as both a clearance and side marker light so you can be seen from the front or side.
Road spray or rain can ruin a poorly sealed light. This one comes with a gasket that creates a weathertight seal when surface-mounted to the trailer. Water stays out, and the incandescent bulb keeps shining bright trip after trip.
No tools needed when it’s time for service. The snap-on acrylic lens pops off easily so you can replace the 194 wedge-base bulb without fuss. Quick fixes mean less downtime and more time on the road.


Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Today on This Old Trailer, we are going to install part number MC82AB from Optronics. This is their armored clearance light. This is the new one that we are going to install and this is the old one we are going to replace. It is a pretty similar design but they are two different manufacturers. This one has seen better days so we are going to replace it. The first thing you need to do is unscrew the plastic cover here. Then you have the base behind it. One has already broken off and this one will probably break when we take it off. Yep, just like that. Now you want your surface completely flat. So here is the remainder of one of the screws that was holding it in place. So we will have to grind that off. Now basically at this point, we are just going to go ahead and just mount the light to the bracket that is already on the trailer. We are just going to do this to mark our holes. We are just going to install it temporarily. Now we will take it back off. We have our mounting holes drilled out. Loosen it up. Alright we will just go ahead and take it off. 1:01
The next thing we want to do is make room for our wire. That means we will have to drill another hole out. We are going to mark from the center of this hole over to the center of the wire coming through the light. And that is around, maybe just over, an inch. Let us go ahead and mark it over about 1 inch. We will mark our hole. Come back with a 1/4 inch or so drill bit for our access hole. Now let us go ahead and reinstall out light. Now take a moment to kind of pull on the wire a little bit. If you can move the little fixture inside, it means your wire is not pinched or anything. Go ahead and cinch it down and then all we have to do is go ahead and connect our wire to our known running wire circuit. And you can use any type of attachment you want. You can solder it, tape it or, in this case, we are going to use a quick splice. Alright, with that that will finish our install of part number MC82AB from Optronics.
Customer Satisfaction Score:
99% were satisfied with this product
1% of customers were not satisfied
Ratings & Reviews

Ken H.
10/2/2023
It’s working out great for me, no problem at all
Info for this part was:
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Cesar B.
7/14/2021
The light is still working fine after 1+ years, few times I accidently bumped the light the metal does a great job of protecting the lens.