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When you need a dependable light to guide you while reversing or backing up, this rectangular incandescent backup light gets the job done. It uses a 28-watt 1141 bulb behind a clear pillow-optics lens that pushes out strong, even illumination. The design helps maximize light output, so you can clearly see what’s behind you and signal others when you’re moving in reverse. It runs on 12V DC systems and gives that classic incandescent glow that’s bright and easy to spot.
If you want a quick and straightforward install, this light keeps it simple. It surface-mounts flat against the trailer using standard hardware—no special brackets or deep cutouts needed. The single-wire setup grounds through the mounting hardware, so there’s no extra ground wire to worry about. The 4-9/16" x 2-1/2" size fits cleanly in tight spaces, and the included screws secure the lens firmly in place.
Built for solid performance, the polycarbonate housing and lens stand up well to everyday use. The clear screw-on lens protects the bulb while letting full light through for visibility. And when it’s time to change the bulb, just remove the screws on the lens—no need to replace the whole light. It’s a simple, rugged setup designed to last through years of towing and backing in all kinds of conditions.
If you’re replacing an older rectangular backup light, this one lines up perfectly with popular models. The mounting holes measure 3-1/2" horizontally and 1-1/2" vertically (center to center), matching standard setups used on many trailers and utility bodies. It directly replaces Optronics # BU31CB and Grote # 62291, so you can swap it in without extra drilling or rewiring.
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Today we'll be taking a look at the Petersen trailer backup light. This is going to be an incandescent, rectangular style light with a clear lens to help you get your trailer backed up into a parking space or just to illuminate the area behind you. It's going to be a surface mount lights. That basically means that our ground connection is made by this metal plate making contact with our trailer or the screws making contact. Now these screws come with it and that's to attach the lens to the light housing. As far as mounting hardware, you'd use these four holes along the perimeter, but it does not come with any hardware for that, so you will have to pick up something on your own, whether that's nuts and bolts or some type of other self-tapping screw.
If we loosen the two screws holding the lens in place, we'll be able to get a look at the inside there. If the bulb ever burns out, this is how you would need to replace it.So we can just thread those two screws out and then we can see the inside. So we'll have our bulb there. You just twist and pull that out, maybe an eighth of a turn. There's just a little catch there to keep that in place.
And then put our lens back over, line it up there inside the housing and then thread this back down. You might notice this little grommet I have here. That also comes with the light and that provides a little bit of protection for the back of the light against your trailer. It's kind of a fiber composite material, sort of a thick paper almost. Kind of feels like very heavy duty construction paper, so it's not going to provide any kind of water resistance I wouldn't think.
But it does give a little bit of shock absorption for the back of your light. Just kind of gives it a little bit of protection there.If you we're to put it on the inside, it sort of fits, but then that makes it so the screws won't attach down to that plate. It doesn't have enough length to get a bite on that plate. So it does need to be on the outside of the light like this. It's compatible with 12 volt DC systems.
We just have our single wire to actually connect, and I'm going to hook this up to my power source here so you can get an idea of how bright it's going to be. So I'm just running my power to that wire and then my ground to one of those screws. And you can see as soon as I make contact with that, the light comes on. So if those screws make contact with your trailer, that creates the ground, even if the plate itself doesn't make contact. Turn out the light in the studio, so you can get a better idea of how it will look in a low light situation. So pretty bright light. Got that about two feet above the table there. Still pretty bright.It's kind of a yellowish light. The bulb type inside there is a 1141 or 1-1-4-1. Turn my power off and let's go over some measurements. Also going to set this grommet aside. So lengthwise, you're looking at about four . Flip this over. Four and nine sixteenths inches or just over four and a half inches there. Going the other way, width is about two and five eighths or just over two and a half inches. The height is about one and three quarters. The distance from the mounting holes on that back plate, center to center, long ways, it's about three and a half inches. So those two bottom holes. inaudible 00:04:12 you can see a little bit better. And then going the other way, it's about one and a half.Overall pretty simple light to install. It's going to provide a nice bright light. That bulb does provide 28 watts of power, and this is going to be an exact replacement for the Optronics number BU31CB and the Grote 62291. Comes with a one year limited warranty from Peterson and it is made in the USA. That's going to do it for our look at the Peterson trailer backup light.
Ratings & Reviews
just what i was looking for. got put in and it works great backing up boat trailer in the dark this is a great light.
Over the years I've made several purchases of hard to find parts. E- Trailer has always been able to pull me out of pickle. AMAZING!
Etrailer.com has a vast variety of items for many of your outdoor vehicle needs. They carry the necessary parts I needed to repair my RV. Their staff are ready to assist you and to answer any concerns you may have. I had a positive experience using etrailer.com and recommend them as a trustworthy supplier.
Significantly higher quality than what is available on Amazon.
I purchased this product to replace original equipment that became rusted after 6 months of camping in an Oceanside RV park. I am back at the same park this year and the new lights have been working well and show no signs of rust. This is a 5 star product.
I’m very happy with the tail lights from E trailer well made and will buy from them again!
Worked great
The part was exactly what I needed. Delivery was faster than expected. I had no difficulty replace the old ones. I can always depend on etrailer to have what I need. I've ordered several times and they have never failed me.
Very nice high quality exact replacement for my box van. Easy to order and came quickly. Fit so well, it was a 5 minute change out, but the van looks years newer.
You sent me what I ordered. It came on time and it works good thank you
Excellent service!!!
Fit perfectly!
Light is perfect, the rubber seal is the issue. Had to get another brand of seal for it to get light into the hole and stay otherwise one side would go in and other side you could not push light in. It should have popped in place like my old one.
The lights fit my 2000 sundowner horse trailer perfectly.
This product was exactly as described and fit perfectly.
Very nice. I mounted these on the back of my trailer and they are very bright. They make it so much easier to back the trailer at night.
Exactly what I needed
While this light is fully functional and will work, the description could use some additional information for those that are looking for a fully "surface mount" light. The hole that the wires go through is not flush so you will either need to have it in a cutout or you will need to delete the plastic around the hole so it will allow for a surface mount. Also the screw holes on the light are not flat with the light and will prohibit a flush mount to the surface of your vehicle. I'm hoping they are water tight enough but I will see after a season of use.
great job! thanks!
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Sierra K.
1/18/2022
I know that some people seal these lights with silicone for extra water protection.