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Fusion LED Hardwired Trailer Light - Stop, Tail, Turn, Backup - Round - Red/Clear Lens - 14 Diodes
Optronics

Fusion LED Hardwired Trailer Light - Stop, Tail, Turn, Backup - Round - Red/Clear Lens - 14 Diodes

Part Number: OPT74NR
In Stock
$20.59
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4" Round. All-in-one waterproof trailer light serves 4 functions: brake, tail, turn, and backup light. Hardwired and ready to install. Red lens set inside clear lens. Recessed mount with built-in grommet to cushion against vibration. 14 Diodes. Great Prices for the best trailer lights from Optronics. Fusion LED Hardwired Trailer Light - Stop, Tail, Turn, Backup - Round - Red/Clear Lens - 14 Diodes part number OPT74NR can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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  • Reviews (46)
  • Q & A (0)
  • Videos (2)
  • Photos

Optronics Trailer Lights - OPT74NR

Highlights

  • One Light, 4 Functions: Provides stop, tail, turn, and backup lights in one 4-5/16" round unit.
  • Reliable In Any Weather: Sonically sealed, waterproof housing is fully submersible.
  • Fewer Replacements Needed: 14 LEDs last up to 50 times longer than incandescent bulbs.
  • Smooth, Bright Output: Red outer band and clear center lens give clear brake and backup visibility.
  • Takes Vibration in Stride: SMT circuit board and recessed grommet mount absorb shock and heat.
  • Road Legal: Meets DOT and FMVSS 108 standards for compliant trailer lighting.

Features to know about

Brighter, Longer-Lasting, and Efficient: Fusion LED Light with 14 Diodes

Tired of dim bulbs or frequent replacements? This 4-5/16" round Fusion LED trailer light uses 14 diodes to deliver a bright, clean beam for tail, stop, turn, and backup functions. The LEDs last up to 50 times longer than traditional incandescent bulbs and use less power while giving off a sharper light. You’ll get consistent brightness without worrying about burnt-out filaments or wasted energy.

One Light That Does It All: Stop, Tail, Turn, and Backup in One Unit

Managing multiple lights for different signals can be a hassle. This all-in-one design handles brake, tail, turn signal, and backup lighting in a single sealed unit. The red outer band lights up for tail and turn signals, while the center white LEDs handle backup duty. It’s hardwired and ready to install, cutting down on extra parts and wiring clutter.

Built to Handle Wet Roads: Sonically Sealed and Submersible

If your trailer ever sees rain or water crossings, this light is ready for it. The housing and lens are sonically sealed into one waterproof piece, making it fully submersible. That means no leaks, corrosion, or water damage to the LEDs inside. Whether it’s heavy rain or boat ramp launches, the polycarbonate construction keeps the circuit dry and protected.

Smooth Mounting and Reliable Fit: Recessed Design with Built-In Grommet

Rough roads can shake lights loose or cause vibration damage. This recessed-mount unit includes a built-in black grommet that cushions against vibration for a secure fit. At just 7/8" deep with an 8" wire lead, it installs neatly and stays put. The durable polycarbonate housing adds impact resistance too.

Safe and Compliant Lighting: DOT and FMVSS 108 Approved

Keeping things road-legal is simple with this light. It meets DOT and FMVSS 108 requirements for automotive lighting so you know it’s built to proper standards for visibility and safety. Once it’s installed, you’re covered on compliance without any guesswork.

Specs

Electrical Specifications

  • Wire configuration: Black wire: tail; Red wire: stop/turn; Brown wire: backup; White wire: ground
  • Voltage: 12V

Dimensions

  • Overall dimensions: 4-5/16" diameter x 7/8" deep
  • Wire length: 8"

Lighting

  • Diodes: 14

Warranty

  • Lifetime warranty on LEDs

STL304MGHB Optronics Fusion Hardwired 4" Round Combination LED Trailer Taillight - Red/Clear Lens - Weathertight Plug - Black Grommet





Video of Fusion LED Hardwired Trailer Light - Stop, Tail, Turn, Backup - Round - Red/Clear Lens - 14 Diodes
Video Thumbnail Video Player Dialog

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for Checking Out the Fusion LED Hardwired Trailer Light

Hello, everybody. This is Jeff at etrailer.com. Today, we take a look at this Optronics round, FUSION LED, hardwired stop, tail, turn, and backup trailer light with the red and the clear lens. Now, this round trailer tail light has a nice smooth, red exterior, and it serves four functions. Now, we do have this hooked up to some 12-volt power just to show you those functions. So what I'm gonna do first is go ahead and turn on the 12-volt power, and you get your tail light function as your first one here.

We'll go ahead and turn off the overhead light. There's your tail light function. Now, when you do apply your brakes, you will notice that those light up a lot brighter to let people know you're applying your brakes. And then if you're going to make a turn, you just hit your turn signal, and you can see that they light up brighter but also flash. And the last thing, I wanted to show you the backup light, which is gonna be this center bar right in here.

Let me go ahead and hook that up, so we can show you. Okay, and now when you go into reverse, if you watch that center bar, you'll see that you'll get the four white LEDs in that center bar. That gives you the reverse backup light. So when you go into reverse, people will be able to see that you're backing up. Now, this light is 14 LEDs, basically four white ones right there in the center, and then if you notice the 10 red ones all the way around on the outer band.

Turn back on our power, or turn back on our overhead lights. Turn off our power. Now, this light is a sonically-sealed, waterproof housing and lens unit, which makes it submersible. It does use the durable SMT technology, which is surface mount technology. That's the construction of the LED circuit board inside here.

This'll let it better withstand shock and vibration and allows for improved heat distribution. Now, we mentioned these are LEDs, and LEDs will make great replacements for incandescent lights. 'Cause number one, they'll last 50 times longer. And they're more efficient 'cause they'll provide brighter light with less power output. And the main thing is no bulbs to replace, no brittle filaments that are gonna break. And you do get a lifetime warranty on the LEDs. We mentioned the red lens right here, and then you have the white lens in the middle. So the red lens has the red LEDs for the tail light, stop, and turn functions. And the center clear lens has white LEDs for the backup light. Now, to install this, it is a recessed-mount, grommet-mount design. Does use a rubber grommet to install this. Now, that is not included. We do sell that rubber grommet separately on our website. It's part number A45GB. This light is hardwired and ready to install. The length on the wire is about eight inches. And the wire configuration will start with the black. That's your tail light function. White is your ground. Red is gonna be your stop and turn function. And then the brown is your backup light. This is DOT, Department of Transportation, compliant. Does meet the Federal Vehicle Motor Safety Standards 108 requirements for automotive lighting. We mentioned it is a 12-volt light. Last thing is just give you dimensions on it. The diameter of this light, 4 1/4 inches. And the depth of it, right at 7/8 of an inch deep. But that should do it for the review on this Optronics round, FUSION LED, hardwired stop, tail, turn, and backup trailer light with the red and the clear lens.

Ratings & Reviews

4.9

46 reviews
Review sort icon
4" Round. All-in-one waterproof trailer light serves 4 functions: brake, tail, turn, and backup light. Hardwired and ready to install. Red lens set inside clear lens. Recessed mount with built-in grommet to cushion against vibration. 14 Diodes.

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Need for later



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Bright light for tail, brake/stop, and back up are an excellent upgrade to the trailer.



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Good products exceptional service



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Great Lights, Diodes all remaining bright, Would Highly recommend



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Awesome tail lights! Bright for brake lights and bright for reverse lights backing up



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This product is the missing link of the trailer market. There is no equivalent.

Shipping to Canada was fast and hassle free.

I strongly recommend the product and the seller.



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Awesome tails much nicer updated look on my service truck



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I bought a similar product on eBay and this one is much brighter, well worth the extra money!



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One of the best trailer light kits I've ever had. Perfect fit for my trailer. Being able to have back-up lights now is a game changer and long overdue.
Very well made and I have no reservations that these lights will last a long time. I like the fact that they aren't overly bright while in running mode. Don't want to give an impression that brake lights are on until they are. When they are applied and ON there is no mistaking. Wonderful lights. Affordable and well made.



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Good all-in-one lights replaced my old old incandescent lights. Really visible. Works great. Plastic housing seems like it could be susceptible to damage.



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These work great and fixed the problem with my truck and its trailer management system. I was having issues with a cheaper set I ordered from another site. My truck's fancy trailer management system would think there was a fault and cut power to the trailer lights. I replaced the lights with these and so far so good. Thank you!



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Lights worked perfectly and it was very easy to I stalled.



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You always have what I’m looking for. Good product, and got it quickly



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Great product. Easy to install. Definitely recommend this product.



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Great quality light. Replaced old incandescent lights with these LED lights on my boat trailer. They are much brighter.



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Wires not identified you have to go to website to confirm which wires are what. Other lights I have purchased were tagged



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Had to wing it since the wires weren't all the same color, but it appears this was the exact part I needed!



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Great product. Was shipped out fast and great communication.



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Great price, good quality. Worked great to rig up my RV receiver hitch toolbox with lights.



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Exactly what I was looking for & super fast response along with shipping



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Great upgrade in brightness for my 2019 Keystone Cougar. Wiring was accurate. Always the only issue for me is clean caulking...but that's a me issue



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Added this to our Arcimoto that we converted to a flatbed. The electronics is driven by Pulse Width Modulation coding in an MRS Module and we don’t have the code. So we had to buy these with less draw (due to less LEDs). They work perfectly. The backups work perfectly (which it had none but the wiring was there). Probably the best lit Arcimoto in the world :) High quality. Fit in the grommet and bracket from another set of lights that had too much draw - so that shows these are very standard size. Pics show no backup, then backup. They are bright!



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These are a perfect replacement for the old lights on my Aliner. Had them wired up in not time. The only thing that presented a problem is that they mount flush. This means that the wires have to line up with wiring holes on a camper. With an Aliner there is one hole for each side, but they are offset to the right. My solution for this is to make risers with cutaways for the wires to run in to the offset holes. I'm using plastic cutting board material to make the risers.



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Quick shipping and everything arrived in great condition. These are going to look great on the back of my 2005 Jeep TJ



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Love the super crisp color temperature and brightness and the reverse light. I've used a ton of Optronics products over the years and have never had one fail. I think these might be my favorite trailer lights yet!


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See what our Experts say about this Optronics Trailer Lights

  • Do You Have a Replacement Tail Light for Winnebago Part Number 152070-01-000?
    While we do not have an exact replacement for the Winnebago tail light 152070-01-000 you may be able to fit the Fusion LED Hardwired Trailer Light # OPT74NR. This is a 4" round light with the similar red an white lens allowing it to act as a tail light, brake light and reverse light similar to your current light. As I see your light fits into a recess you will need to check the dimensions to determine if this light will fit in the opening. If it does not fit please let me know the measurement...
    view full answer...

Info for this part was:

Employee Lindsey S
Edited by:
Lindsey S
Employee Jeff D
Installed by:
Jeff D
Employee Dustin K
Video Edited:
Dustin K
Employee Justice A
Written by:
Justice A

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