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TecNiq Contoured Eight Function Box Style Tail Light - Drivers Side
TecNiq

TecNiq Contoured Eight Function Box Style Tail Light - Drivers Side

Part Number: TN42XR
In Stock
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$24.67
Retail:$41.22
You Save: 40%
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You're loaded up after dark and rolling out. This light handles the signaling and keeps your plate visible. It's wired in, sealed tight, and built to take the rough roads, water, and bumps along the way. Great Prices for the best trailer lights from TecNiq. TecNiq Contoured Eight Function Box Style Tail Light - Drivers Side part number TN42XR can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
  • All Info
  • Reviews (10)
  • Q & A (0)
  • Videos (1)
  • Photos

TecNiq Trailer Lights - TN42XR

  • Tail Lights
  • Rectangle
  • LED Light
  • Red
  • 7-1/2L x 3-1/2W Inch
  • Surface Mount
  • Submersible Lights
  • Rear Clearance
  • Rear Reflector
  • Side Marker
  • Side Reflector
  • Stop
  • Tail
  • Turn
  • TecNiq

You're loaded up after dark and rolling out. This light handles the signaling and keeps your plate visible. It's wired in, sealed tight, and built to take the rough roads, water, and bumps along the way.


Highlights

  • Eight Functions in One: Covers everything you expect from a full rear trailer light, plus a few extras.
  • Plated and Legal: Built-in license light on the driver side keeps your plate visible and compliant.
  • Sealed for Marine Use: Waterproof, dustproof housing is fully submersible and IP68 rated.
  • Long-Term LED Performance: Bright, efficient LEDs rated for 100,000 hours of use.
  • Ready for Rough Roads: Hard plastic housing and lens resist cracks, chips, and impact damage.
  • DOT Compliant Design: Meets FMVSS 108 for both narrow and wide vehicle applications.

Specs

Dimensions:

  • Overall dimensions: 7-1/2" long x 3-1/2" tall x 3" deep

Light Output:

  • Functions: stop, tail, turn, side marker, side reflex, rear clearance, rear reflex, license
  • LED lifespan: 100,000 hours
  • LED color: red (with white license light)

Power Specs:

  • Voltage: 9 - 14V DC
  • Amperage: 0.15 - 0.21 amps (left), 0.03 - 0.04 amps (right), 0.09 - 0.12 amps (brake)

Wiring & Install:

  • Fits standard grommet mount
  • Compatible with PL-3 or weathertight connectors

Construction & Color:

  • Housing: molded plastic
  • Lens: impact-resistant polycarbonate
  • Color: red lens with clear license light

Certifications:

  • IP68 rated
  • DOT compliant
  • Meets FMVSS 108

Note:

Driver-side light only. Passenger-side light (TN62XR) and wiring sold separately.



T81-RRLT-1 Red 9LED White 2LED Red Lens 8 Function 7.5IN Contoured Box Style STT W/License and Tri-Pole Conn

Installation Details TN42XR Installation instructions


California residents: click here


Video of TecNiq Contoured Eight Function Box Style Tail Light - Drivers Side

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




Video Transcript for Review of TecNiq Trailer Lights - Drivers Side Contoured 8 Function Box Style Tail Light - TN42XR

Hi everybody, Andy here with etrailer.com. Let's take a real quick look at this TecNiq driver's side contour eight function box style taillight. So this is gonna cover everything that you expect from a full rear trailer taillight. As you can see, I do have this plugged into my power supply already and I have the taillight function currently on, but I'm gonna go ahead and turn my studio lights off here and walk through the other functions. So taillight, brake light, and then turn signal. And then I'm just gonna back out here real quick just so you can see what this looks like from a distance.

And I'm gonna go ahead and hit that brake light again and then back to taillight and then blinker. And then I'm gonna turn my studio lights on here and go over the rest of the light here. So we do have a reflection here on the side and this can also act as a side marker light 'cause you can still see that. And then this also can act as a rear clearance light, a rear reflection here, a reflector rather that you can see here on the bottom. And then of course we have our license plate light.

It's gonna shine down on your license plate obviously below. So stop, tail, turn, side marker, side reflector, and then acts as a rear clearance, rear reflector, license plate light. So it's pretty much, it has quite a bit of functionality to it. And so this is sealed for marine use. So it's waterproof, it's dust proof, it's going to be fully submersible.

And this is also, I believe the rating on this is IP68, and this is gonna be ready for rough roads. It's hard plastic housing with the lens. So it's gonna do a great job I believe, of resisting cracks, chips, and impact damage. Let me pull out a ruler here, give you some measurements so you have a good idea of the size. So looking at the overall length, we're sitting right at seven and a half inches.

The overall height about three and a half inches. And the depth, pretty close to three inches it looks like. So this is gonna fit your standard grommet mount. It's DOT compliant, and it's gonna meet the Federal Motor Vehicle Safety Standards 108 for both narrow and wide vehicle applications. And so again, this is gonna be for the driver's side, but if you're also looking for the passenger side, on your screen, I am including the model number there for that. You can just take that model number and pop it in the search field of our website and that will take you to the passenger side light. You can add that to your order as well. I think that's gonna wrap up our 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

3.9

9 reviews
You're loaded up after dark and rolling out. This light handles the signaling and keeps your plate visible. It's wired in, sealed tight, and built to take the rough roads, water, and bumps along the way.

by:



by:

Ready to install. Works as it should.



by:

I received the taillight in a timely manner. It fit on the trailer like the old one. Great service.



by:

Customer service was great. Haven’t installed the light yet, but appears to be good quality.



by:

The lights look really good, however, I can only install the passenger side as the driver side does not include any wires. A pigtail needs to be ordered extra for the driver's side. IF you scroll all the way down on the item page, it states it under the "NOTES". Make sure you order the $[XX] pigtail if you want to wire up the light (driver's side). I spoke with TecNiq and mentioned that it would be a good idea to include the pigtail and adjust the price, or put the "NOTE" right on top where it can be seen.

PArt #A47PB
Right Angle 3-Wire Pigtail for Optronics Trailer Lights - 3-Prong PL-3 Plug - 10" Lead



by:

Fits great on my trailer and almost looks like the original Wesbar light. Does not come with pigtail wiring harness or mounting bolts. They should update the description with that information. I used my old hardware and pigtail.



by:

The drivers side does not come with the Pigtail. A 3-prong pigtail# A47PB is sold separately. Its unfortunate the web description isn't clear about this.
I also found the pigtails don't clip in as tight as my old Wesbar lights of the same design. There doesnt seem to be a lot of options if you want the same style of lights for your ez laoder trailer.



by:

I ordered both driver and passenger side tail lights. It only came with one wire harness. They told me oh well sorry about that!!

Nick S. profile picture
Etrailer Expert

Nick S.

9/8/2025

I am sorry to hear about the initial experience with your order. I will have someone from our customer service team reach out and get this resolved for you.



by:


9
9

See what our Experts say about this TecNiq Trailer Lights

  • Is There A Replacement Lens Available For A Wesbar 105825?
    Hi Jim! The Wesbar Wrap Around Lenses were discontinued quite a while ago, so unfortunately, we do not have any left in stock. I did a lot of searching around the web, but I was unable to find anywhere that still carries them. You may be able to find one at a local trailer supply store, but I would definitely call before venturing out to see. Gas is expensive these days! The best thing we can offer would be a full replacement. I included two options that would be the most similar to your...
    view full answer...
  • Can TecNiq Contoured Taillight Replace Wesbar # 281595
    Hey Tien, yes the TecNiq # TN42XR is same size as the Wesbar 281595 and would easily install in place of one.
    view full answer...
  • Are Mounting Holes On Wesbar 271595 Tail Light The Same As The TecNiq TN42XR And TN62XR?
    Hello John, thanks for reaching out. Yes, the mounting holes on the TecNiq Contoured Seven Function Box Style Tail Light # TN42XR (driver side) and # TN62XR (passenger side) are exactly the same as the Wesbar 271595 tail light. They are 2" apart on center. I believe this TecNiq light was created with those Wesbar wraparound lights in mind because they were super popular back in the day and for a long time nobody else made a suitable replacement. What kind of trailer are they going on?
    view full answer...

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Info for this part was:

Employee Lindsey S
Updated by:
Lindsey S
Employee Wilson B
Updated by:
Wilson B
Employee Kim H
Updated by:
Kim H
Employee Jameson C
Expert Research:
Jameson C
Employee Andy C
Installed by:
Andy C
Employee Sabrina W
Edited by:
Sabrina W
Employee Kara L
Written by:
Kara L

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