bing tracking image
  1. Trailer Lights
  2. Optronics
  3. Clearance Lights
  4. Light Bar
  5. LED Light
  6. Red
UltraThin ID Light Bar for Trailers over 80" Wide - Submersible - 3 Diodes - Red Lens
Optronics

UltraThin ID Light Bar for Trailers over 80" Wide - Submersible - 3 Diodes - Red Lens

Part Number: MCL70RB
In Stock
$24.20
Trailer Lights
zoom in icon
slider vertical icon
zoom out icon
Comment field cannot be left empty.
Name field cannot be left empty.
By submitting this form, you understand and agree to our Terms of Sale, Website Terms of Use and Privacy Policy.

Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.

Error submitting comment. Please try again momentarily.

Product Images

Customer Photos

Videos

15" Long x 1-3/8" tall x 5/8" deep. Waterproof identification light bar is designed for trailers wider than 80". Durable polycarbonate lens and housing. Surface mount to trailer. 2-Wire design. P2 rated. Great Prices for the best trailer lights from Optronics. UltraThin ID Light Bar for Trailers over 80" Wide - Submersible - 3 Diodes - Red Lens part number MCL70RB can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
  • All Info
  • Reviews (145)
  • Q & A (0)
  • Photos

Optronics Trailer Lights - MCL70RB

Highlights

  • Reliable In Any Weather: Sonically sealed, waterproof housing keeps water out and LEDs protected.
  • Slim Fit Anywhere: Ultrathin 15" x 1-3/8" x 5/8" design mounts easily in tight spaces.
  • One Bar, Three LEDs: P2-rated ID light provides bright, efficient rear identification for wide trailers.
  • Fewer Replacements Needed: Long-life LEDs draw just 0.038 amps at 12.8V and have no bulbs to change.
  • Easy 2-Wire Hookup: Power and ground lead simplify surface-mount installation.
  • Road Legal: DOT compliant for trailers over 80" wide so you stay compliant on the road.

Features to know about

Low Visibility at Night: Bright, Efficient LED Lighting

If you’ve been running older incandescent lights, this UltraThin ID Light Bar is a big upgrade. It uses three red LEDs that are brighter and more efficient while drawing only 0.038 amps at 12.8V. The light bar is 15" long x 1-3/8" tall x 5/8" deep, giving plenty of coverage across the rear. It’s P2 rated for strong, forward visibility that keeps your trailer visible to others in dark or low-light conditions.

Tight Mounting Spaces: Slim, Surface-Mount Design

When space is limited, the ultrathin design makes installation simple. At just 5/8" deep, it fits neatly without sticking out or catching on anything. The mounting holes are spaced 14-1/8" center to center for a clean fit on most setups. It surface mounts directly to the trailer and uses a straightforward 2-wire design—one power lead and one ground—so wiring is quick and tidy.

Harsh Conditions and Water Exposure: Fully Sealed and Submersible

Moisture and road spray are no problem for this light bar. The red polycarbonate lens and housing are sonically sealed into one waterproof unit that’s completely submersible. It keeps water away from the diodes and circuit board, making it a dependable choice for trailers that see wet roads or full submersion during use.

Frequent Bulb Failures: Long-Lasting LED Durability

This light bar eliminates the hassle of replacing fragile bulbs or dealing with corroded sockets. The solid-state LEDs last up to 50 times longer than incandescent lights and don’t rely on filaments that can break from vibration or impact. You get a reliable light that stays bright for years with practically no maintenance needed.

Visibility Compliance for Wide Trailers: DOT-Compliant ID Bar

For trailers wider than 80", this identification light bar meets DOT requirements for rear clearance lighting. The three-diode setup creates a clear, even red signal so your trailer stays compliant and visible wherever you haul.

Specs

Dimensions

  • Overall dimensions: 15" long x 1-3/8" tall x 5/8" thick
  • Distance between mounting holes (center on center): 14-1/8"

Dimensional diagram of Optronics UltraThin ID Light Bar MCL70RB showing 15-inch length, 1-3/8-inch height, and 14-1/8-inch mounting hole spacing for trailer installation.

  • Overall dimensions: 15" long x 1-3/8" tall x 5/8" thick
  • Distance between mounting holes (center on center): 14-1/8"

Electrical

  • Power draw at 12.8V: 0.038 amps

Lighting

  • Diodes: 3

Warranty

  • Lifetime warranty on LEDs

MCL70RB Optronics UltraThin Identification Light Bar for Trailers over 80" Wide - Submersible - 3 Diodes - Red Lens

Alternate part number: MCL-70RB





Customer Satisfaction Score:

Ratings & Reviews

4.8

145 reviews
Review sort icon
15" Long x 1-3/8" tall x 5/8" deep. Waterproof identification light bar is designed for trailers wider than 80". Durable polycarbonate lens and housing. Surface mount to trailer. 2-Wire design. P2 rated.

by:

Cheapest LED light out there. Great quality and even better service!



by:

Great quality product for extra visibility on my enclosed trailer



by:

Fast shipping works great



by:

very nice looking / its nicer than the one that cam with the trailer that I broke.



by:

Easy to install, quite bright. Was the best solution for my tilt bed trailer.



by:

Great product quality.....Right on time. This is my second order from Etrailer.com> They will be getting my business in the future.



by:

Great people to deal with and quick shi pping.



by:

Product was described as is. Knew what I was getting. Fast service getting to me in Alaska and didn't charge an arm and a leg for shipping!



by:

I used this on the rear of my car trailer. Worked great and brighter than the stock ones. However, I smashed it backing into a tree. This one worked so well I’ll probably just buy it again.



by:

Arrived on time well packaged with no damage and was what was advertized. Mounted easily on my trailer, the LED's are brighter than the 3 marker lamps it replaced. A Good product at a reasonable price.



by:

Your suspension parts and the wiring components exceeded my expectations. Just as pictured and very good quality. I'll be back again and again You're easy to do business with and the shipping is very prompt. Good job, folks!



by:

like the slim design. Seems like the marker lights on flatbed trailer are always getting broken and the slimmer design helps protect them some.



by:

Needed this for a flatbed trailer I bought that needed to be brought up to standards for it's size. Bought many things from etrailer.com. Good prices, good quality, good information.



by:

I was disappointed that I didn't catch that despite being 14 inches long, it only has 3 working LEDs.
The help and service provided by this company was stellar. They helped me get exactly the same size light as came out of the motorhome in only a few minutes.
Use them!



by:

excellant online shopping , shipping was fast

David profile picture

David

3/22/2016

tks , it works great



by:

Awesome looking light. These units are slightly shorter than the stop/turn/tail with reflector. It would be nice if they matched or if there was shorter stop/turn/tail with reflector to match it, but only 1/4 inch difference not too bad. Also, the LED circuit board is open on the back side of the light. I will be filling it with silicone or dielectric grease before mounting and then caulking around the mount to make it water tight.



by:

Great parts fast and a toy for our buddy !



by:

Happy with purchase. Appropriately bright. I ran the white wire inside the trailer chassis and grounded it; I could have just as easily run it to one of the self-drilling light bar mounting screws. Like another reviewer, I flexible-caulked around the light bar.



by:

Great product, fast service.



by:

I have bought several items over the past few years from etrailer and get great customer service and good products always. The prices are good and the time it takes to get the product is pretty fast.

Pat M. profile picture

Pat M.

10/27/2017

the products that i purchased work just as i expected them to and your company is great to work with



by:

Great product, very bright and high end material usage.



by:

Quick delivery
The right part was shipped

This is why I return to etrailer
Thank you.



by:

I use these as step lights on my 5th wheel RV. They are exposed to the elements and mounted behind the tires and have never failed.

Gary profile picture

Gary

12/13/2024

Still working as advertised.



by:

Great service, great fit and works as described. Videos and staff are very helpful.



by:

Appears to be an exact duplicate of the OEM light on my 2017 Ranger Trail trailer. Aligned perfectly. (Check your mounting hole measurement b4 ordering). Time will tell as to it's waterproofing, but for the cost... if I get 37 months out of it, it will have outlasted Ranger's OEM light that cost $xx+ to replace

Michael M. profile picture

Michael M.

5/12/2023

After 12 months, I havent had any issues and it is working as expected.


25
25

See what our Experts say about this Optronics Trailer Lights

  • Replacement Clearance Lights for Gooseneck Brand Trailer
    The UltraThin ID Light Bar for Trailers over 80" Wide - Submersible - 3 Diodes - Red Lens # MCL70RB is 15" Long x 1-3/8" tall x 5/8" deep. This is probably the most similar option but there isn't an amber options for this one. The 3-Light Truck and Trailer Identification Light Bar with White Base - Amber # MC99AB is 16-3/4" long x 1-3/8" tall x 1-7/16" deep will match the Identification Light Bar for Trucks and Trailers - Incandescent - White Steel Base - Red Lens # MC99RB.
    view full answer...
    Image 1 for Image 2 for
  • Comparing Optronics Aero Pro and Glolight Trailer Tail Lights
    There would be a noticeable difference if you had both the Aero Pro light # STL37RB and the Glolight, # STL117RB right next to each other. You would notice that the Glolight seams to actually sort of glow rather than just light up. This is due to the top and bottom bars that light up solid. Both lights are going to be plenty bright. Light # STL37RB has 23 diodes which will be very bright as you can see in the picture submitted by reviewer Becky P. She is using tail lights # STL37RB and...
    view full answer...
    Image 1 for
  • Fender and Trailer Light Recommendations for a 7 x 10 foot Utility Trailer
    After looking at all the lights you referenced you should be good for trailer lights on your 7 by 10 foot utility trailer. You might check your local DOT though just to be sure as regulations can vary by area. Single Axle Trailer Fender - 16 Gauge Steel - 13inch to 14inch Wheels # HP69VR Over 80inch Wide, Square LED Trailer Tail Light, 7-Function, 18 Diode, Right Hand # STL2RB Over 80inch Wide, Square LED Trailer Tail Light with License Plate Light, 8-Function, 23 Diode, LH # STL3RB LED...
    view full answer...
    Image 1 for
  • Replacing Lights and Trailer Connector on Boat Trailer Over 80 Inches Wide
    Although there isn't a specific kit available that addresses all your needs, you can use a light kit designed for an over 80 inch trailer like # TL16RK and modify it so it will work. You'd need some extra wire, # 16-3B-1, an ID light bar for the middle of the rear beam that would tie into the running light circuit, part # MCL70RB, a molded trailer connector, part # H20046 and a junction box, part # 38656. The install would be pretty straightforward. The molded connector would run to the...
    view full answer...
  • Replacement LED Trailer Tail Light Measuring 15 by 1-3/8 Inches with 14-1/8 Inch Mounting Holes
    We actually have two red LED lights that are 15 inches long and 1-3/8 inches wide that have a 14-1/8 inch hole spacing. Parts # MCL70RB and # MCL70RBF2. They will both fit into your chrome base, # A69CB.
    view full answer...
  • Parts needed to Wire a Boat Trailer With Led Lights and a 4-Way Towed with a 2008 Toyota Tacoma
    To use the Optronics Trailer Lights, item # STL22CCRB, on your boat trailer you will need several parts. I will list them below. 2 each Optronics Trailer Lights, item # STL22CCRB 2 each Rubber Grommet for 6-1/2 inch Oval Trailer Tail Lights, item # A70GB 2 each Right Angle 3-Wire Pigtail for Sealed Trailer Stop, Turn and Tail Lights, item # A47PB 2 each Mount Bracket for 6-1/2 inch Oval Trailer Tail Light - Stainless Steel, item # 337LB1SS 1 each 35 ft. Wishbone 4-Way Trailer Wiring Harness...
    view full answer...
  • Replacement Clearance Light that Has 14 inches Between Bolt Holes
    Hey Mario, we have the Optronics clearance light # MCL70RB that is very close to the dimensions you mentioned. It has mounting holes that are 14-1/8 inches apart and it is 1-3/8 inches wide. Feel free to email me back with the pictures you have if this isn't what you had in mind.
    view full answer...
  • Correct Converter To Add Third Brake Light To a Trailer
    In order to separate the stop light circuit on your trailer for use with a third brake light you will need to use the Pacer Performance 3rd Brake Light Logic Module part # PP20-702, not the Tow Ready Tail Light Isolating Diode System with 4-Pole Connector part # TR118821. Then for a third brake light, I like the UltraThin ID Light Bar for Trailers part # MCL70RB but have attached other options for you as well.
    view full answer...
  • Is the Thinline LED Trailer Tail Light Available As a Clearance Light
    The Thinline LED Trailer Tail Light part # STL64RB has three functions; stop, turn, and tail. If you are looking for a similar style of light with the clearance function capability then you can use the UltraThin ID Light Bar part # MCL70RB. If this is not what you are looking for please just let me know and I would be glad to see if we have other options for you.
    view full answer...

Do you have a question about this Trailer Light?


Info for this part was:

Employee Tyler C
Written by:
Tyler C
Employee Jeff D
Installed by:
Jeff D
Employee Cole B
Installed by:
Cole B
Employee Jameson C
Expert Research:
Jameson C
Employee Wilson B
Updated by:
Wilson B
Employee Brian T
Updated by:
Brian T
Employee Noah M
Updated by:
Noah M

At etrailer we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.


Product Experts Available Now!
Call 1-800-940-8924