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Double Bullseye Trailer Clearance, Side Marker Light, Two-Bulb - Amber

Double Bullseye Trailer Clearance, Side Marker Light, Two-Bulb - Amber

Item # MC42AB
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Double Bullseye Trailer Clearance, Side Marker Light, Two-Bulb - Amber Surface Mount MC42AB
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In Use/Installed

4-1/16" L x 2-1/8" W x 1-1/8" D; Corrosion resistant; replaceable lens and bulbs; surface mount on 3" centers; 1-wire; 2-bulb incandescent Lowest Prices for the best trailer lights from Optronics. Double Bullseye Trailer Clearance, Side Marker Light, Two-Bulb - Amber part number MC42AB can be ordered online at etrailer.com or call 800-298-8924 for expert service.
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  • Reviews (166)
  • Q & A (10)
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Optronics Trailer Lights - MC42AB

  • Clearance Lights
  • Rectangle
  • Incandescent Light
  • Amber
  • Surface Mount
  • 4L x 2W Inch
  • Optronics
  • Non-Submersible Lights
  • Rear Clearance
  • Side Marker

4-1/16" L x 2-1/8" W x 1-1/8" D; Corrosion resistant; replaceable lens and bulbs; surface mount on 3" centers; 1-wire; 2-bulb incandescent


Double-Bullseye Trailer Clearance and Side Marker Light, Two-Bulb - Amber

This double bullseye light can be used as a clearance or marker light. The dual-bulb, amber light measures 4-1/16" long x 2-1/8" wide x 1-1/8" deep. The molded plastic housing and durable lens provide all-weather protection against corrosion. The two-bulb design greatly increases the light output. The light features a replaceable, snap-on lens on a black plastic base and easy-to-replace bulbs. The light mounts on standard 3" centers. The light contains a single lead wire for power and is grounded through the mounting hardware.

  • Amber light functions as clearance, side marker light
  • Weather and corrosion resistant
  • Dual bulbs increase light output
  • Single-wire design grounds through mounting hardware
  • Surface mounts on 3" centers
  • Dimensions: 4-1/16" L x 2-1/8" W x 1-1/8" D
  • Replaceable lens and bulb

Manufacturer Cross Reference
Light will work as an exact replacement for:
Uni Bond # ML2040A
Wesbar # 3440/3444
Truck Lite # 26302Y
Grote # 46793
Peterson # 138A

Manufacturer Specifications

Dual bulb, bullseye marker or clearance light with black base. Two-bulb design optimizes light output. Features snap-on, replaceable lens and easy to change replaceable bulbs. All-weather, molded plastic housing and durable lens protect against corrosion. Mounts on industry standard 3" centers. Grounds through mounting hardware.

dimensions of light


MC42AB Amber Double Bullseye Marker, Clearance Light by Optronics, Inc.

Alternate part number: MC-42AB





Video of Double Bullseye Trailer Clearance, Side Marker Light, Two-Bulb - Amber

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




Video Transcript for Optronics Double Bulls-Eye Trailer Clearance Light Installation

Speaker 1: Today we're going to take a look at and show you how to install the Optronics Double Bullseye Trailer Clearance and Side Marker Light. The part number is MC42AB.Now here you can see the light installed. You can see that double bullseye design meets requirements for both clearance and side marker lights when mounted on a 45-degree angle. It also, unlike some of the other clearance lights that are are available, has a dual-bulb setup. This gives you a lot more light than you're going to get out of the single-bulb setup. It's a really nice attractive look.

It is an incandescent light. That means it's going to draw power, and those filaments in there, over time they might break. So you might be in here changing bulbs out.A lot of times, nowadays, we're seeing guys that are switching away from an incandescent light and getting into the LED lights. They're a cleaner brighter light. LED lights also require less energy than what you get with incandescent lights such as this, so you won't be drawing as much through the wiring system on your vehicle or trailer.Now, this is designed with 3" centers for our mounting location, so it's going to work out with all standard size clearance lights.

The lens on the light is also replaceable. So if for some reason this we're to get hit maybe with a rock or something, you get a crack in it, instead of replacing everything, you can simply replace that lens.Now, to begin the installation, of course, you need the old light to be removed. You'll take the new base, and see this is a single-wire design. You see we've got one wire that comes out of the back of it. That needs to go to the power, that sends power to the light.

The other wire that we have here is our ground wire. Since this is a fiberglass portion of the trailer, we don't any ground through that. You can see inside here these metal strips. That's generally where you're going to get your ground, so as you put your screw through it into the metal of your trailer, it provides that.We're going to show you how to make it work with whether this one-wire light, with a two-wire, or with a single-wire, whatever you've got there. Basically we'll strip the wire on the back of the light and then both the wires we have here.

If you've got one wire, just strip the one.Now we're going to slide on one of our butt connectors. This is a heat shrink type. I really like using these on any application I do just because they're going to give you superior corrosion resistance. You're not going to have to worry about moisture and dirt getting in there causing corrosion and eventually causing failure. That's going to be connected directly to the wire that sends our clearance or side marker light signal.We can use a heat source to get our butt connectors shrunk down. You want to gently heat this. You don't want to overheat it, kind of rotate it as you go. It's going to shrink down on that wire, and then when it shrinks all the way down it almost looks like the wire magnifies, and then you'll a little bit of clear gel that comes out of the end of it. That's going to indicate that you've got a good connection. Just do that on both sides. Now, for the single-wire setup, you're ready to mount that right back in position once you shrink this down.For a dual-wire setup, we're going to pull one of our bulb. We're going to wire right through the back there, then we'll strip it off. I'm going to add on a small 1/4" ring terminal. Now we'll use our attachment hardware from before. We want to run that through the ring terminal, see just like that. Get it re-secured to our trailer. That's going to give this the ground that we need. Put that bulb back in we took out on these side. Just firmly push your lens on. We'll be ready to test it out.Now for your test, you'll simply want to connect it to the back of your vehicle and turn on your running lights or use a trailer tester like we are today. That'll complete our look at the Optronics Double Bullseye Trailer Clearance and Side Marker Light, part number MC42AB.


Customer Reviews

Double Bullseye Trailer Clearance, Side Marker Light, Two-Bulb - Amber - MC42AB

Average Customer Rating:  4.9 out of 5 stars   (166 Customer Reviews)

4-1/16" L x 2-1/8" W x 1-1/8" D; Corrosion resistant; replaceable lens and bulbs; surface mount on 3" centers; 1-wire; 2-bulb incandescent

- MC42AB
by:

Fast service. Just the perfect replacement light for my trailer. 733855



- MC42AB
by:

Good high visibility side marker lights at a great price. 644243



- MC42AB
by:

Lights were exactly what I was looking for... Fast delivery, good price, worth the money spent...Great quality lights..(trailer lights) 595929



- MC42AB
by:

Items are as pictures show which doesn't always happen when ordering from other companies. I am very satisfied and will order more from them 592355



- MC42AB
by:

everything was great with this transati on 582916



- MC42AB
by:

I was fixing up a vintage Shasta trailer that needed new lights and your products were just what I needed. Thank you very much for the great service. 582215



- MC42AB
by:

good products & fast service I'll always check your site first when I need something. 575623



- MC42AB
by:

Very happy with all products 570965



- MC42AB
by:

Bought these before. Work great and always in stock! 568773



- MC42AB
by:

Cheaply made, but the cost reflects tha t. 539310



- MC42AB
by:

so far everything is as said,Great! 519580



- MC42AB
by:

Fast shipping nice lights. 500518



- MC42AB
by:

Great experience fast shipping great price great product extremely happy I would recommend these to anyone 446447



- MC42AB
by:

As described. Nicely built. Good value 444591



- MC42AB
by:

nice but no rubber back 430960



- MC42AB
by:

GREAT REPLACEMENT LIGHTS. WELL MADE 2 BULB LAMP. 430004



- MC42AB
by:

Replaced 40 year old clearance lights with this item. Working great after one year. Very well pleased. 381091



- MC42AB
by:

These lights last longer than your trailer will. 368872



- MC42AB
by:

Quality lighting used on my 1978 Mack Sleeper restoration. GREAT quality and pricing. Looks just like oem 365482



- MC42AB
by:

Trailer Clearance Lights #MC42RB, easily installed, nice lights. There could be a little more space (maybe 1/8" in depth) on the backside so the wire could be positioned through an existing hole in the trailer and the light assy would sit completely flat against the trailer. Seems to be good value for the money and they are cheap. 355579


Comments
Still working great after a year, good value.
Wayne B - 03/13/2018

35831

- MC42AB
by:

Thanks again etrailer for a job well done. great clearance lights, fast delivery. Third time ordering from etrailer and my experience as been perfect every time. 347156



- MC42AB
by:

Great quality, Great service Curt L 343620



- MC42AB
by:

Quality products, fast service, great prices, friendly people. "Best of the Best" Curt L 343619



- MC42AB
by:

Fast shipping, product was good. Easy mount. I am working on a gooseneck trailer trying to get it wired up. Still a work in progress, but these will help tremendously. 326172


Comments
The lights are working fine, no problems at all. Very pleased.
John N - 12/19/2017

32088

- MC42AB
by:

Nothing but RAVE reviews for eTrailer.com Parts were exactly as ordered, great price, fit perfectly. Couldn't be more elated with the fast service too! 305769


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Info for this part was:

Video Edited:
Patrick B
Video Edited:
Chris R
Expert Research:
Jameson C
Expert Research:
Rachael H
Updated by:
Laura H
Updated by:
Brian T
Installed by:
Randy B
Video by:
Zach D

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