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3-Light Truck and Trailer Identification Light Bar with White Base - Red

3-Light Truck and Trailer Identification Light Bar with White Base - Red

Item # MC77RB
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Shipping Weight: 0.58 lbs
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15-9/16" L x 1-3/16" W x 1-5/16" D; Three separate lights on the base; lights have replaceable lenses and bulbs; surface mount on 6-1/8" centers; 1-wire; total of 3 incandescent bulbs Lowest Prices for the best trailer lights from Optronics. 3-Light Truck and Trailer Identification Light Bar with White Base - Red part number MC77RB can be ordered online at or call 1-833-496-1390 for expert service.
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  • Reviews (37)
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Optronics Trailer Lights - MC77RB

  • Clearance Lights
  • ID Bar
  • Incandescent Light
  • Red
  • 15L x 1-1/2W Inch
  • Surface Mount
  • Rear Clearance
  • Non-Submersible Lights
  • Optronics

15-9/16" L x 1-3/16" W x 1-5/16" D; Three separate lights on the base; lights have replaceable lenses and bulbs; surface mount on 6-1/8" centers; 1-wire; total of 3 incandescent bulbs


  • Red light strip functions as identification light bar for trailers more than 80" wide
  • Light bar has three replaceable MC68RB lights attached to base
    • Each separate light features a replaceable lens and easy-to-replace bulb (A193)
  • White metal housing is sturdy and durable to withstand the environment
  • Surface mounts on 6-1/8" centers
  • Single-wire design includes lead wire and grounds through mounting hardware
  • Dimensions: 15-9/16" L x 1-3/16" W x 1-5/16" D
  • Power draw at 12.8 volts: 1.0 amp

A three-light identification light bar for trailer applications more than 80" wide. This red three light bar measures 15-9/16" long x 1-3/16" wide x 1-5/16" deep. Light bar contains three separate, replaceable MC68RB lights on a white base. Each light features a replaceable, snap-on lens and easy-to-replace bulb. The sturdy, white metal housing provides protection against all environmental conditions. This light mounts on 6-1/8" centers. The light contains a single lead wire for power and is grounded through the mounting hardware.

Manufacturer Cross Reference
Light will work as an exact replacement for:
Uni Bond # LB1030R
Peterson # 136-3R

Manufacturer Specifications

ID light bar with three replaceable red lights, part #A68RB, and lead wire for trailers more than 80" wide. Features snap on, replaceable lens and easy to change replaceable bulb. Single-wire design grounds through mounting hardware. Mounts on 6-1/8" centers. Features rugged, all environmental metal housing.

dimensions of light

MC77RB Optronics Three Light Identification Light Bar - Red

Alternate part number: MC-77RB

California residents: click here

Video of 3-Light Truck and Trailer Identification Light Bar with White Base - Red

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

Video Transcript for Optronics Trailer Lights - Clearance Lights - MC77RB Review

Here we have Optronics 3 Light Truck and Trailer Identification Light Bar with white base, part number MC77RB. Each separate light has a user replaceable lens and bulb. Its designed to surface mount on your truck or trailer using mounting holes that are 7 inches on center. This light bar is used to identify trucks and trailers that are over 80 inches wide. It's a single wire design meaning it will ground through the mounting hardware you use on the metal backing bracket, and we'll get our power through this single power wire lead.

Next we are going to hook up a power supply so you can see what the light looks like once its lit up. We'll connect our ground to the mounting bracket, and connect the loose power wire lead to a power supply. Next we'll turn off the overhead lights so you can see how bright the light is. And that's it Optronics 3 Light Truck and Trailer Identification Light Bar with white base, part number MC77RB.

Customer Reviews

3-Light Truck and Trailer Identification Light Bar with White Base - Red - MC77RB

Average Customer Rating:  4.8 out of 5 stars   (37 Customer Reviews)

15-9/16" L x 1-3/16" W x 1-5/16" D; Three separate lights on the base; lights have replaceable lenses and bulbs; surface mount on 6-1/8" centers; 1-wire; total of 3 incandescent bulbs


Found the exact replacement for my 2010 Andersen 6X10 Utility trailer rear position lights. Quick delivery and very resonable priced. Worked perfectly.

Still looks great and Works perfectly
Peter - 07/28/2021


Was just what I ordered delivered on time will order more items from e trailers


Absolutely love this light bar! Very bright and professional looking. I really appreciate that you made it affordable, shipped so fast, and provided excellent customer service. I am so happy with how it came out & just having one wire made it easy to install! Thank you! A++++


This company is the best! I will definitely order from them again.

Great! Good products!
Joseph - 11/08/2021


Lights work great, but it does not have a ground wire. Assembly grounds through mounting bracket. Light will not work if mounted to plastic or wood.

The light can still be mounted to wood or plastic surfaces with the addition of a ground wire. Take a wire and crimp an eye ring terminal on either end. One will be attached to the trailer frame, the other should make contact with the hardware and grounding points on the light. You can Y or T the wire if needed to make additional ground contacts on the light. Remember a ground requires clean, metal to metal contact. Paint or rust can interfere.
-- Etrailer Expert Patrick B - 05/27/2014


Just got the lights in the mail. Ordering online was simple. We received our order in just a few days. Thank you for such a quick turn around. We will be installing them this afternoon.


I purchased the 3-Light Truck and Trailer Identification Light Bar with White Base - Red for my camper. Easy to order, great price, received quickly, easy to install, quality construction, just what I needed. Super service, I couldn't be more pleased or impressed with your company. A true pleasure doing business with you!


I received what I ordered in a reasonable amount of time.


I recently had the pleasure of doing business with you. You have great products at reasonable prices and reasonable shipping charges. I had the distinct pleasure of dealing with customer service rep Katie D. Katie was one of the best internet reps I have ever dealt with. She was polite, professional, patient and very knowledgeable of your products. She was able to provide expert advise and if she didn't know the answer to my question she contacted your supplier and got me the information I needed. I will bookmark your site and hope to have the pleasure of doing business with you again. Please pass this on to Katie. Thanks for a great shopping experience.


Every thing showed up in great condition and in a timely manner. I have not installed the lights yet


Was exactly as the description described. Fit back perfectly with the light that came on the trailer when I bought it. Great product will use again!


Absoulutly perfect experiance ... I will use your company again and will for sure advise other of the quality of products and quality of the experiance ..!!!


All is perfect no complaints ... will use you folks again for sure
-- comment by: Gary - 02/06/2014

Thanks for coming back and updating us!

-- Etrailer Expert Patrick B - 2/10/2014


Haven't had the opportunity to use all the parts ordered(doing 2 trailers at one time)but so far I am very pleased not only with the quality of the parts but also the timely fashion in which I received them. Thank you and I will be ordering again.


All my trailer lights were delivered on time and seem to be of good quality, I would recommend buying here. I am a repeat costumer and will be back! Thank you etrailer!


Absolutely perfect buying experience. I've purchased this item before for e-trailer as in the past the purchase and steps of communication throughout the purchase are very well done by this company. Actually improved since my last purchase about 6 months ago where status as to where the order is was texted and emailed to me without having to look anything up .... came in two days just as advertised


Everything from etrailer is always as described and great prices and quick shipping!


The light bar is really good quality with plenty of wiring to make the connections needed. I have already installed the light and it worked great. Great price, great service, and excellent quality!


This is an amazing!


Light bar was identical to the one that came on my Big Tex flatbed trailer. The price was right and it was properly packaged.


Great company to work with, products as listed, great customer support through the process including having to change my order!


Quality products, reasonable price, and very efficient delivery. Thumbs up!


Easy install works perfect!


lights are great !! customer service beyond expectations,,, need i say more ??

Doug - 05/13/2019


All great products and fast shipping


Nothing fancy just a simple efficient piece of hardware. Great price, great service and prompt delivery.

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