This 2-1/2" round amber light uses a premium incandescent bulb that delivers up to 15,000 hours of consistent illumination. It works as both a clearance and side marker light when properly installed, giving dependable visibility on the road. Running on a standard 12V DC system, it’s an easy way to get bright, steady light without complex wiring or adapters.
Water and corrosion can ruin lights fast, but not here. The housing and lens are sealed together to keep moisture out, making this light waterproof and ideal for use where submersion or heavy splash is common. The sealed circuit design keeps everything protected so it keeps shining strong, even after repeated exposure to water.
Visibility from every angle makes towing safer. This PC-rated light puts out a 90-degree beam to either side of center for a total of 180 degrees of coverage. That means it’s visible from the front and side at once, serving as both a clearance and a side marker light when mounted correctly. The wide pattern helps others see your trailer sooner in low light or at night.
Installation stays simple thanks to its recessed mount setup. It fits into a grommet (142-18 – sold separately) and accepts an industry-standard 2-prong plug (142-49 – sold separately). If you’re replacing an existing round light, you can reuse the same hole; if it’s a new install, just cut the opening or use a mounting bracket. Either way, it goes in clean and secure without extra drilling or custom brackets.

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Today, we're going to be taking a look at the Peterson Trailer Clearance Light. This is going to be a nice round lens, amber light to help you stay visible out on the road, and also stay compliant with all DOT laws. We'll have our two prongs to the back, so that we can get that mounted up to any of our wiring harnesses that look the same. It's a standard size, so there's a lot of different little wiring harnesses that'll work with this. Just plug that into the back. It does come with some dielectric grease on there, so you might notice there's some sticky stuff.
That's just to help keep that connection. It helps to keep those prongs from any kind of corrosion, so it's a more water tight seal, and also keeps them from rusting out. Now, we'll disconnect our wires, have white to ground, black to power, then we can show you what this bulb looks like when it's lit up.Flipping on my power source here. You can see our single bulb will light up. It is an incandescent bulb, and doesn't really look like that lens can be taken off, so as far as maintenance, pretty much just as you see it there, you might be able to pry that cover off, but probably would be better off just to replace the whole light if that bulb ever does burn out on you.
I'm going to turn the lights out in the studio so you can get a better idea of how bright that is in low light situations. So, even with just that single bulb, it's still fairly bright, so that'll provide a warning to other drivers to see where the perimeter of our trailer is. I'll turn off my power. Disconnect the plug at the back here. And let's go over some measurements.
It measures about 2 1/2 inches in diameter, that's going from this more flared out edge at the bottom or the back of the light depending on how you want to look at it, and then it stands about 3/4 inch tall. Overall, really nice, easy to use light that should get you back out, and on the road. And that's going to do it for our look at the Peterson Trailer Clearance Light.
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