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Light Guide LED Trailer Tail Light - Stop, Tail, Turn - Submersible - Oval - Red Lens
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Light Guide LED Trailer Tail Light - Stop, Tail, Turn - Submersible - Oval - Red Lens

Item # STL602RB
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STL602RB - Oval Optronics Tail Lights
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6-1/2" Oval. Waterproof trailer light with 12 diodes provides stop, turn signal, and tail light functions. Smooth X-shape crosses the face of the light. Recessed mount with grommet (sold separately). Accepts standard 3-prong plug. Great Prices for the best trailer lights from Optronics. Light Guide LED Trailer Tail Light - Stop, Tail, Turn - Submersible - Oval - Red Lens part number STL602RB can be ordered online at or call 1-800-940-8924 for expert service.
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  • Reviews (28)
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  • Videos (3)
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Optronics Trailer Lights - STL602RB

  • Tail Lights
  • Oval
  • LED Light
  • Red
  • 6-1/2L x 2W Inch
  • Recessed Mount
  • Stop/Turn/Tail
  • Submersible Lights
  • Optronics

6-1/2" Oval. Waterproof trailer light with 12 diodes provides stop, turn signal, and tail light functions. Smooth X-shape crosses the face of the light. Recessed mount with grommet (sold separately). Accepts standard 3-prong plug.


  • Oval LED trailer light provides stop, turn, and tail light functions
  • Light Guide Series features a smooth X-shape across the face of the light
  • Sonically sealed, waterproof housing and lens unit is submersible
  • Durable surface-mount technology (SMT) construction of LED circuit board
    • Better withstands shock and vibration
    • Allows improved heat distribution and thinner construction
  • LEDs make great replacements for incandescent lights
    • Last 50 times longer
    • More efficient - provide brighter light with less power output
    • No bulbs to replace - no brittle filaments
  • Durable polycarbonate housing and lens
  • Red lens over white LEDs
  • Compatible with 12V DC systems
  • Recessed mount with grommet (sold separately)
  • Accepts standard 3-prong plug
  • DOT compliant
    • Meets FMVSS 108 and CMVSS 108 requirements for automotive lighting


  • Dimensions: 6-1/2" wide x 2-1/4" tall x 1-3/4" deep
  • Diodes: 12
  • Power draw 12.8V:
    • Stop/turn: 0.421 amps
    • Tail light: 0.114 amps
  • Lifetime warranty on LEDs

Optronics STL602 Light Guide LED Trailer Tail Light Diagram

Sonically Sealed, Waterproof Trailer Light

The waterproof construction of this light makes it ideal for use on trailers that may be submerged, like a boat trailer. The housing and lens are sonically sealed together to create a single unit, which means that water will not get into the light and damage the diodes or circuit board.

PL-3 Wiring Connection

Optronics PL-3 Connection

This Light Guide light has a standard 3-prong plug as pictured above. A 3-prong pigtail (A45PB or A47PB - sold separately) is required to connect this light to your vehicle or trailer. You will also need a rubber grommet (A70GB - sold separately) to install your tail light. An optional mounting bracket is also available (BK70BB - sold separately) to make it easier to mount the light on your trailer.

Recessed-Mount Light

Recessed mount light

Recessed-mount trailer lights install underneath a housing or a grommet, which is often sold separately. These lights will extend into the mounting surface and require that a hole be cut into your trailer.

STL602RB Optronics Light Guide Oval LED Trailer Tail Light - 12 Diodes - Red Lens

California residents: click here

Video of Light Guide LED Trailer Tail Light - Stop, Tail, Turn - Submersible - Oval - Red Lens

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

Video Transcript for Optronics Light Guide LED Oval Trailer Light Installation

Speaker 1: Today we're gonna take a look at and show you how to install both the Optronics Light Guide LED Backup Light, part number BUL602CB, and the Optronics Light Guide LED Trailer Taillight, this has the red lens, it's part number is STL602RB.Now here's what our lights are gonna look like when we have them on. We kinda turned out the lights here just to give you an idea of how they've gonna look. Now when you use these as a pair, they meet the requirements for the backup lights. So they're gonna be compliant in that aspect, you're not gonna have to worry about having any additional lights anywhere. There's a total of 12 diodes. You can see we've got the eight here on the outside and then they're gonna have four more internally there.

I like that little, kinda that X that you see there. That's unique, you don't see that in a whole lot of lights. So overall it's gonna give us a nice bright light, but it's also gonna be unique in appearance.Now overall, the new LED lights have a lot of advantages to them. They last much, much longer than typical incandescents. We don't have to worry about getting in there, changing the bulbs on them.

Also they give a cleaner and brighter light as compared to what we used to see out of them. And they're not gonna draw as much power. Now these are gonna work out really well whether you're using them on a truck like we are, or on a trailer. They're fully submersible, they're sonically sealed all the way around that back cover so you won't have to worry about any water or moisture getting towards the inside of the light. I think that's really important in trailers, maybe not so much in trucks, hopefully the back end of your truck isn't gonna be submerged in water.

But if it is, I guess we don't have to worry about it.Now the polycarbonate lens is gonna be really good at resisting cracks so it'll kinda absorb that and also resist scratching. So for a long time to come your lights should look really, really nice. Additionally they use surface mount technology inside. It's kind of a newer circuitry. This is gonna run a little bit cooler, it's better at dissipating the heat, but also it's gonna absorb more bumps or kinda the harshness that we'll see going down the road as our truck's bouncing around or our trailer's bouncing around.

So they should remain very, very dependable.Now overall our light is gonna be six and half inches long. It's gonna be two and three eighths of an inch wide. And then from the surface of the light to the back it's about an inch and three quarter.Now as far as this light goes, it's gonna share all of the same features that our reverse light has. So we've got the surface mount technology, polycarbonate lens, be extremely efficient, bright, and long lasting LEDs. So overall both of them are gonna be almost identical. The difference is of course in the functions that they provide. This one giving us our running lights, taillights, and brakes. This one giving us our reverse lights. They're gonna share the same dimensions as well.Now when in taillight mode, you'll see we're gonna have the illuminated X. That's a really unique design. I like that, very similar to the reverse light has kind of an X shape in it. Now we're gonna hit the brakes, hit our blinker and we'll see how the additional diodes light up to give us that brightness that we need. There you can see those outer diodes lighting up indicating a change in direction. And those will be the same lights that come on when we hit our brakes.Now one thing to keep in mind, the reverse lights are both sold separately. You're gonna need one for each side to be compliant. And the same for our tail, stop, and turn. You're gonna need one for each side. The grommet is also something you'll need to pick up if you don't already have one.Now for our installation we're gonna be putting these on a flatbed. These lights are extremely common, both the reverse and turn and taillights in these applications anymore. I think you're gonna see more and more people doing a replacement like this, but also gonna work out really well for your six inch trailer lights that need replacement kinda on the back. You'll see them used kinda universally in both places. If you take a look here at the passenger side you can see we've already got these installed. Got our rubber grommet here that we're using. Our reverse is here, close to the middle. Stop, turn, and taillight gonna be closer to the outside there, also on a rubber grommet.So we're gonna go through the process and show you how to do it. We're doing these together because we're gonna ground the plugs, in which go in the back of the light, we're gonna ground those together as they go over to the actual frame. So we just have one good big ground point. We're gonna start with our two wire pigtail. This is gonna go to our reverse light segment. You can see as I took the olds out I marked them there. We know this is our reverse so we can pull that off.Now we're gonna use butt connectors to make our connections here. So we're gonna trim that off and strip it back. And we use part number DW05743, it's a heat shrink butt connector. I like using heat shrinks especially when we're on the outside of the vehicle because then we really don't have to worry about any moisture getting in there causing corrosion or holding dirt in there causing corrosion, which is eventually gonna lead to our light shorting out. I'm gonna trim off a little bit of the red wire on our pigtail here, but I do like to leave a little bit of extra. That's just gonna give you a little bit of wiggle room on the wiring if you ever need to make changes down the road or if light fails, maybe you hit it with a board you're loading up. Break the lens, you need to replace it. This'll give us a little bit to work with. That's just gonna go on the other side. Gonna crimp that down.Then we'll use a heat source to shrink it. Now for your heat source you can use a heat gun, you can use a mini torch, or generally what I do if I don't have too many to do is just use a lighter. The key is not to over heat it. You don't wanna melt it or anything, you just want it to shrink. And as you do that if you notice it looks like the wire's magnified now and then there's just a little bit of clear gel that comes out of the end there. Indicates that you got a good connection made. That's what you're looking for.Now to house the light we're gonna use a rubber grommet. So we need to place that in and we just press firmly all the way around the outside until it seats in there. If you look on the back, you got this little lip and we wanna make sure that lip goes behind our mounting surface. Kinda spreads itself out there as we do that. Then we'll take our light. I like to start in one end of it. And the light has this lip right here. As we place that in that's gonna get ahold and that'll keep everything in place securely. Right, just like that. That's gonna give it a little bit of wiggle room so if we do bump it it'll flex a little bit. I kinda like that.And then for our plug here, that's gonna plug into the back of the light. And with the two wire you're just gonna have two prongs. Then we just wanna line it up. Our wire is gonna face the open side. You can see we've got that kinda three walls on each side. Just get that lined up, push down, and you want that to go all the way down to where it's resting on top. Just like that. There's a little bit of grease in there on the back side of the light already, so you really don't have to worry about dielectric grease.Now for our ground, I'm gonna take that, I'm gonna mount it right over here. But I wanna tie my taillight into that same ground. We'll show you how to do that here in just a second. That way we're just drilling one hole, putting in one self tapping screw.We're gonna be using the three wire pigtail for this. White is gonna be our ground, red needs to go to your stop, turn signal. And then the black is gonna go to your running light signal. Now we're gonna use the same butt connectors that we used for our light here for the turn and the brake signal. So we'll just get that placed on our stripped wire. Now for my running light signal, yours is probably gonna be the same way. I've got one single wire that comes out, but it can't just end here at the running light. I'm also doing the side market light here on the back corner and on the front corner, so I wanna be able to extend that. So what we're gonna do, strip this one back a little bit further. I'm gonna twist it up really well and this time I'm gonna use part number DW05744, it's just a slightly larger heat shrink butt connector. With that doubled over we can slide that up and in. Get that crimped down.We're gonna strip back both sides of this and join them together. Let's get that one stripped. I'll strip this one. Let's put them right side by side. We're gonna twist those together. Then we can take the larger heat shrink, slide that down over both of those. Then not only will we get power to our plug, but it'll have a continuation so we can get those other lights hooked up. Now this is basically gonna be in lieu of your quick splice connectors, the ones you'll put on there and kinda clamp down. Generally those are gonna cut and damage the wire. I really dislike using them so I always go with heat shrink so we can shrink that down the same way. Now we're gonna connect our red wire to the turn and brake signal. Doing basically the same thing, just with that slightly smaller butt connector.Now we're just gonna pop that light in the same way we did our reverse light there. We can get that plug plugged in. I like how they're nice and secure. They fit in there really well. Those plugs, I don't think you'll ever have to worry about them coming out unless you actually remove them.Now we've got your ground wires here. Let's kinda get this up and out of the way for now. We'll take care of that in a minute. What I'm gonna do is draw them over. We're gonna go right over here. So right about there, let's splice them together. To do that we're gonna cut. And I'm gonna save this longer ring terminal end. Strip both of these back. Then we'll twist those up and basically we're gonna connect these the same way we did that running light extension. We'll use one butt connector, go in, gonna crimp down. Then the other side will be our pigtail coming out. This one we're stripping back about twice as far. Turn it, flex it, place it in.Now we're gonna decide where we want our ground. I'm gonna loop that up kinda like that. So about right there. I'm just gonna drill it out and then we'll use a self tapping screw. Just like that. And that'll have our ground established. Then with our other wires here, you can tape these up, make them look nice. Basically do whatever you wanna do with them. Just keep them up and secure. You don't want these hanging down. If we left these hanging down here they'd likely get hung on something. So get them taped up and get them secured up.We'll test it out and make sure it's working properly. Of course we need to turn on the running lights, make sure our red light's working. Do our blinker. And do our brakes. Now let's also check out our reverse signal there. Make sure it's coming on as well.And that'll do it for our look at the Optronics Light Guide LED Backup Light and Trailer taillight with red lens.

Customer Reviews

Light Guide LED Trailer Tail Light - Stop, Tail, Turn - Submersible - Oval - Red Lens - STL602RB

Average Customer Rating:  4.9 out of 5 stars   (28 Customer Reviews)

6-1/2" Oval. Waterproof trailer light with 12 diodes provides stop, turn signal, and tail light functions. Smooth X-shape crosses the face of the light. Recessed mount with grommet (sold separately). Accepts standard 3-prong plug.


These LED brake/tail lights are an easy swap out to replace older incandescent lights. Just remove the old and plug in the new! I really like the "X" pattern that displays as running lights, and the surrounding LEDs light up nice and bright.


I've always liked optronic lights. This is definitely an attention-getter with the X. Very bright easy to install. This is on a Hallmark 5x10 trailer


Just for background on me old retired dude lovin life. Now for my experiences with etrailer: before my purchase of the lights I had made previous purchases and every aspect of dealing with this company has been an excellent experience. Ok old Dudes get sidetracked occasionally. The trailer light have been on my boat for little over a week 2 or 3 trips to launch and all is good lights are totally sealed (and only an idiot would want to try to open it). I think these lights really stand out in the night even before braking. I really like the X worked into the light another way of standing out to all follower excellent product with safety worked into every aspect of it.


Love the look, one year later they still work great


Super excellent staff! I preordered this awesome looking light, and they called to make sure I knew it wouldn't be shipped for a month at least. I knew, but was still pleasantly surprised by the call! Awesome. And the lights showed up early!


Used these to replace older trailer lights. Work great, very good quality.

John T.


Lights still work just like new. Great product.


PRO's: Easy to install; virtually a drop in replacement (Although they were not the exact same as the sealed old-condensent bulb type I had to on my pull-trailer before.) Bright! (Price, on-sale was fair but again, easily off-set by the ease of using the etrailer site!)
Con's: None to state.


The lights are good and standard size, but they seem to have a slightly off plug receptical. I ordered 6 of them and all seemed to be the same. I had to bend my connectors with a pliers a little bit to get them plugged in.


Very bright
I like the X pattern


Easy to install, waterproof, nice & bri ght


Been a year now and these have been great. Being on a boat trailer in and out of the water several times, they have yet to get water in them.



Been Great!! Nice to have a cool looking light that when dunked in the water to launch my boat they dont fill with water. I hope to get a few years out of these.


It works, but I needed a transformer and a rectifier to use it for the light in my refrigerator.


Works as it’s designed. Very low profile and seals well


just what I wanted, looks good


Very sharp. The trim lines are beautiful. The lights are fantastic. And like everything else in my life, it tasted awesome with gravy!!


Product is everything etrailer claimed in specifications and as usual excellent video. Good Value, very happy with the product.


Very happy with the light. And the prompt service! Thanks


Works great!!


Great lights. Nice and bright!


Just as advertised.






Show More Reviews

See what our Experts say about this Optronics Trailer Lights

  • Good Looking LED Taillight Kit for Truck with Flat Bed
    For what you are looking for I think our best looking option is the Light Guide LED Trailer Tail Light # STL602RB which is an LED taillight setup with a unique design that would look great on your flat bed setup. It's not smoked, but we had a chance to install it on a flat bed like yours and we found it worked and looked great. See install video. For a grommet to install it you'd want the # 40-06-020 and then for a wiring harness # A45PB.
    view full answer...
  • Recommended Lights for CM Trucks 1510304 Flatbed
    Based on my research the CM Trucks 1510304 uses the standard size oval lights on the flatbed. For stop, tail, turn lights you can use the # STL602RB. For reverse lights we have the # BUL602CB, or if you want a backup and tail function the # BUL602CRB. You will also want the PVC Grommet # a70gb and 3-Wire Pigtail for Optronics Trailer Lights # A45PB for installation.
    view full answer...

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Info for this part was:

Employee Jameson C
Expert Research:
Jameson C
Employee Cole B
Installed by:
Cole B
Employee Randy B
Installed by:
Randy B
Employee Amy B
Written by:
Amy B
Employee Chris R
Video Edited:
Chris R
Employee Zach D
Video Edited:
Zach D
Employee Wilson B
Updated by:
Wilson B
Employee Brian T
Updated by:
Brian T

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