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Mini Clearance/Side Marker Light w/ Grommet - Submersible - Red LED - Red Lens - 0.180" Bullet
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TecNiq

Mini Clearance/Side Marker Light w/ Grommet - Submersible - Red LED - Red Lens - 0.180" Bullet

Part Number: TN38MR
In Stock
$6.92
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etrailer Installation
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Stay visible when towing your boat trailer at night with this submersible, 1" diameter LED light. This red light can function as a rear side marker or clearance light. PC rated. 9" Long pigtail has 0.180" bullet connectors. Great Prices for the best trailer lights from TecNiq. Mini Clearance/Side Marker Light w/ Grommet - Submersible - Red LED - Red Lens - 0.180" Bullet part number TN38MR can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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  • Reviews (263)
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TecNiq Trailer Lights - TN38MR

Highlights

  • Reliable In Any Weather: IP68 submersible design keeps water and dust out for lasting performance.
  • One Light, Two Functions: PC-rated 180° beam works as both clearance and side marker light.
  • Compact Yet Tough: 1" round, sealed polycarbonate housing resists UV and impact damage.
  • Built to Last: Premium LED rated for up to 100,000 hours with urethane-sealed circuit board.
  • Simple Power Hookup: 9" pigtail with 0.180" bullet connectors fits standard trailer wiring.
  • Road Legal: Meets or exceeds FMVSS 108 standards for trailer lighting compliance.
Made in USA

Features to know about

Brighter and Longer-Lasting: Red LED That Stays Reliable

Swapping out old bulbs for LEDs makes a big difference in brightness and reliability. This 1" diameter red light uses a premium LED rated for up to 100,000 hours of operation, so you won’t be changing bulbs anytime soon. It runs on 9V – 14V DC with only 0.06 – 0.08 amps of draw, giving you strong visibility with very low power use. The LED is also vibration resistant, which helps it hold up through rough roads and repeated use.

Peace of Mind Around Water: Fully Sealed and Submersible

If your trailer ever sees water, this light is built to handle it. The lens and housing are sealed together into one solid unit so moisture can’t sneak in. TecSeal urethane potting protects the circuit board far better than common epoxy potting, keeping out water and dust completely. With an IP68 rating, it’s both waterproof and submersible—ideal for trailers that get dunked at the ramp or face heavy rain.

Better Visibility from More Angles: PC-Rated 180-Degree Beam

Safety isn’t just about brightness—it’s about being seen from every angle. This PC-rated light throws a 180-degree arc of red light, clearly visible from the front or side. That wide coverage means it can act as both a side marker and a clearance light when mounted properly, so you get full visibility without needing two separate fixtures.

Built Tough for Long-Term Use: Polycarbonate Lens and Military-Grade Construction

This small round light doesn’t just look good—it’s built to last. The housing uses automotive-grade polycarbonate that resists UV damage, impacts, and wear. Inside, the circuit board is military-grade for long-term durability and consistent performance over years of use. It meets or exceeds FMVSS 108 standards for lighting performance.

Simple Fit and Hookup: Compact Recessed Mount with Bullet Connectors

Installing this light is straightforward. It fits into a standard 3/4" diameter cutout using the included grommet, so it sits cleanly and securely. A 9" pigtail with 0.180" bullet connectors plugs directly into your trailer’s matching connectors—no rewiring or special tools needed. Compact at just 1" diameter by 7/8" thick, it tucks neatly into tight spaces while giving off plenty of light where you need it most.

Specs

Dimensions

  • Overall dimensions: 1" diameter x 7/8" thick
  • Dimensions without grommet: 3/4" diameter x 7/8" thick

Dimensional diagram of TecNiq Mini Clearance and Side Marker LED Light showing diameter and thickness measurements for recessed mount installation.


Electrical

  • Input voltage: 9V - 14V
  • Power draw: 0.06 - 0.08 amps

Lighting

  • Diodes: 1
  • Wire length: 9"
  • IP rating: 68

Diagram illustrating the 180-degree light spread pattern of a PC-rated trailer side marker and clearance light.

  • PC-rated light coverage: Produces a 90-degree angle of light on either side of its centerline for a total of 180 degrees of coverage.

Warranty

  • Limited lifetime warranty: Applies to this product.

S34-RR9B-1 TecNiq Red Mini LED Side Marker - Clearance Light - PC Rated - Red Lens - 9" Wire - 0.180" Bullet





Video of Mini Clearance/Side Marker Light w/ Grommet - Submersible - Red LED - Red Lens - 0.180" Bullet
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Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for Feature Breakdown: Mini Clearance/Side Marker Light w/ Grommet

Hi everybody. Andy here with etrailer.com. Let's take a look at this Submersible Red LED Mini Clearance or Side Marker Trailer Light. With this little one inch round, waterproof LED mini trailer light, you're going to be able to haul safer by alerting other drivers of your trailer's position and direction of travel. As you can see, I already have this connected to power. You can see just how bright it is with my bright studio lights on.

But let me go ahead and turn my studio lights off here real quick, just to give you a better idea of what this is going to look like in darkness and can just see the light on my table here. Let me zoom out real quick just so you can see it at a distance. So this light's going to function as both a clearance and rear side marker light when properly mounted. This one red LED underneath a red lens is rated for up to 100,000 hours of operation. It is energy efficient, long lasting and vibration resistant.

Now this is a PC rated light, meaning it produces a 90 degree angle of light on either side of its center line for a total of 180 degrees of coverage. The beam pattern can be clearly seen when you are standing directly in front of the light as well as when you are standing on either side of the light. Rather than buying side marker and clearance lights separately, you can mount this single PC rated light at a 45 degree angle on the rear corner of your trailer to act as both. This sealed waterproof light includes a durable, polycarbonate housing and UV resistant lens. The circuit board is of a military grade construction and the urethane potting offers a better protection than common epoxy potting.

This has an IP rating of 68. This is 12 volt DC compatible. As you can see, it's a two wire pigtail with a 0.180 male bullet ends. And I measured the wire earlier before our time together, and from the end of the plug all the way behind the light here, we're sitting at about 11 and a half inches of length. So this is a recessed mount insulation with an included grommet and insulation does require a three quarter of an inch diameter cutout.

Let me pull out my ruler here real quick and just give you the measurement of the overall thickness. As you can see, we're sitting right at seven eights of an inch. And if you are looking for additional measurements that I did not cover with you today, on this product page, we do have a diagram with some other measurements that you might find helpful. And this is going to meet or exceed FMVSS 108 standards and this does have a limited lifetime warranty. Well, that's going to wrap up our real quick look today. I do hope that it was helpful for you. Again, my name is Andy. Thank you for joining me.

Customer Satisfaction Score:

Ratings & Reviews

4.7

263 reviews
5 Stars
(219)
4 Stars
(32)
3 Stars
(4)
2 Stars
(4)
1 Star
(4)
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by:
Exactly what I needed and a perfect fit. eTrailer had them shipped and delivered within a few days, which was great! As always, great product selection and service!
by:
Perfect fit to replace one that was damaged on our trailer.
by:
Very nice lights
by:
Great quality product and fast shipping
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These clearance lights are an exact replacement for those on my Wells Cargo trailer, whose grommets had rotted from exposure to the sun. Etrailer's list of their product's specifications made it easy for me to order the correct part. Shipment was immediate. I'm a happy repeat etrailer customer!
by:
Matched the bulbs in my shoreland’r trailer perfectly, the plugs were a different size. I just heat shrink soldered the new one on. Probably a better connection anyway. No problem
Mike L. profile picture
Etrailer Expert

Mike L.

4/30/2026

We're glad to hear that, good job!

by:
Plug and play just like OEM! Great product and price!
by:
Excellent product I will recommend to friend , excellent communication with buyer
Thank you guys !
Nick S. profile picture
Etrailer Expert

Nick S.

12/1/2025

That is great to hear! I am glad the process was easy and I hope the install was as well. It looks great on your vehicle!

by:
Product itself is great. I'm not familiar with trailer wiring, so if there is a standard wire gauge that is typically used that's on me for not knowing it, but it would be nice if it were included in the product description. Aside from that, I am extremely satisfied with my item.
Mike L. profile picture
Etrailer Expert

Mike L.

2/18/2026

The pigtail wires are 16-gauge which is typical. Hope that helps!!

by:
More info on size of marker lights. Was replace 3/4 lights on a Tritons snowmobile trailer with clam shell on it. They work just not as bright as old lights.
by:
Great clearance lights for my new ebike rack!!
by:
These lights were exactly what I needed and replaced some broken ones on a trailer fender. Good quality and were as advertised.
by:
Great replacement light however the wiring is reversed from the lamps on my unit.
by:
They are great just what i was looking for super Brite and easy install
by:
a fun little project, I put new tail lights on my trailer and found out I had one bad wire , so I pulled new wires and added these onto my Roller guides , look really nice!
by:
When I first installed it, it seemed to be dull but it was because I didn’t have a good ground.
by:
The RV clearance light are much better than original ones. They are brighter and set closer to the surface. I replaced 2, 1 red and 1 amber and they fit perfectly. Wire color code was different, but just touch wires together and if it lights connect it.
by:
Great service and light exceeded my expectations
by:
Excellent thank you
by:
Great lights.
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Info for this part was:

Employee Lindsey S
Written by:
Lindsey S
Employee Wilson B
Updated by:
Wilson B
Employee Justice A
Updated by:
Justice A
Employee Ryan G
Installed by:
Ryan G
Employee Andy C
Installed by:
Andy C
Employee Joshua U
Video by:
Joshua U

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