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Optronics LED Trailer Utility Light - Submersible - 10 Diodes - Oval - Clear Lens
Optronics

Optronics LED Trailer Utility Light - Submersible - 10 Diodes - Oval - Clear Lens

Part Number: BUL78CB
In Stock
$21.18
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7-9/16" x 3-5/16" Oval. Waterproof LED utility light provides bright light to illuminate an area. Durable polycarbonate housing and lens. Surface mount with built-in flange - no panel cutout required. 2-Wire design. Great Prices for the best work lights from Optronics. Optronics LED Trailer Utility Light - Submersible - 10 Diodes - Oval - Clear Lens part number BUL78CB can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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Optronics Work Lights - BUL78CB

  • LED Light
  • Exterior Lights
  • Interior Lights
  • Surface Mount
  • Oval
  • Utility Lights
  • White
  • Optronics

7-9/16" x 3-5/16" Oval. Waterproof LED utility light provides bright light to illuminate an area. Durable polycarbonate housing and lens. Surface mount with built-in flange - no panel cutout required. 2-Wire design.


Features:

  • LED utility light provides bright light to illuminate an exterior or interior area
    • Not certified for backup light function
  • Sonically sealed, waterproof housing and lens unit is submersible
  • LEDs make great replacements for incandescent lights
    • Last 50 times longer
    • More efficient - provide brighter light with less power output
    • No bulbs to replace - no brittle filaments
  • Durable polycarbonate housing and lens
  • Clear lens over white LEDs
  • Compatible with 12V DC systems
  • Surface mount with built-in flange - no panel cutout required
  • 2-Wire design includes power lead and ground wire


Specs:

  • Dimensions: 7-9/16" Long x 3-5/16" wide x 3/4" deep
  • Light output:
    • Effective lumen output: 490 lumens
    • Raw lumen output: 700 lumens
  • Diodes: 10
  • Power draw at 12.8V: 0.054 amps
  • Lifetime warranty on LEDs


Manufacturer Cross Reference

  • This light functions as an exact replacement for:
    • Wesbar EZ


Optronics BUL78 Series LED Utility Light Dimensions

Sonically Sealed, Waterproof Trailer Light

The waterproof construction of this light makes it ideal for use on trailers that may be submerged, like a boat trailer. The housing and lens are sonically sealed together to create a single unit, which means that water will not get into the light and damage the diodes or circuit board.


Raw Lumens vs. Effective Lumens

Lumens are used to measure the amount of usable light that is put out by a light source. Raw lumens represent the number of lumens that the manufacturer claims the LEDs are capable of producing. It does not include the light's drive method or the amount of light lost from the lens or reflector. Effective lumens take these factors into account and represent the number of lumens that are actually produced by the complete light assembly, not just the amount of light that the diodes are capable of producing. This light has a 700 raw lumen capacity and produces 490 effective lumens.



BUL78CB Optronics LED Trailer Utility Light - Submersible - 10 Diodes - 490 Lumens - Oval - Clear Lens - 2-Wire

Alternate part number: BUL-78CB




California residents: click here


Customer Satisfaction Score:

Ratings & Reviews

4.7

348 reviews
7-9/16" x 3-5/16" Oval. Waterproof LED utility light provides bright light to illuminate an area. Durable polycarbonate housing and lens. Surface mount with built-in flange - no panel cutout required. 2-Wire design.

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See what our Experts say about this Optronics Work Lights

  • Comparing Various LED Lights for Use with a Powered Wheelchair
    The Great White LED Utility Light, part # PE63FV, that you referenced is a 16-diode LED light that is compatible with 12V and 24V outputs and has a 2-wire pigtail. The Light Guide LED Backup Light for Truck/Trailer, part # BUL602CB, is a 12-diode LED light that has a PL-2 connection type. The Optronics LED Trailer Utility Light, part # BUL78C3MB, is a 10-diode LED light that is compatible with 12V systems and accepts industry standard 2-prong or 3-prong plugs. The other Optronics...
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  • Can Reverse Light on Trailer Also be Powered with Switch In Truck
    You can do this but you'd need to use a diode installed on the circuit so that the switched power won't backfeed onto the vehicle reverse lights. So what you can do is wire both the reverse light circuit and the switched power source to the input side of the # RM-790 and then the output side to the circuit and you'll accomplish what you are looking for.
    view full answer...
  • How Would Reverse Light Install on a Boat Trailer
    You would need to have a reverse light circuit ran to your trailer to power reverse lights. If you have a 5-way flat or 7-way trailer connector currently then that circuit is already present. If you have a 4-way harness then you would need to install the part # 20036 on your tow vehicle to allow you to have that circuit. The # BUL78CB is a white light that would work well for this. For more info on trailer wiring and where to find the reverse light circuit on common trailer connectors...
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  • What is the Brightness Output of the Optronics 6-1/2 Inch LED Trailer Lights
    Optronics uses candelas to rate the brightness of their lights instead of lumens and the output of the Optronics 6-1/2 inch Oval LED Back Up light, # BUL52CB, is 175 candela. At a distance of 1 foot, the candela output is equal to the output in lumens. This light has the highest candela output of any of our 6-1/2 inch oval LED lights. The LED 10 diode light, # BUL72CB, has an output of 123 candela and the LED 10 super diode light, # BUL78CB, has an output of 125 candela. Another thing...
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  • Utility Trailer Upgrades: Toolbox, LED Taillights, and Spare Tire Holder
    The Dee Zee Specialty tool box # DZ6535P should work as a tongue tool box for your trailer dimensions. The overall dimensions of this tool box are: 35 inches long by 14 inches wide by 13 inches tall. Please check these measurements with your trailer and make sure that the full square portion of the tool box will not interfere with the turning/backing radius of your trailer. This toolbox has a capacity of 3.6 cubic feet. When you relocate the cargo that you are carrying in the tool boxes...
    view full answer...
    Image 1 for Image 2 for Image 3 for
  • Recommended Optronics Assembly for Adding Backup Lights to Sprinter
    I recommend going with the Optronics LED Backup Light # BUL10CB, as it will provide you with a clear, bright LED and it is DOT approved to be used as a backup lamp. The Optronics Sealed Oval LED Light # BUL78CB that you also mentioned is a nice utility light, but it is not actually DOT approved to be used as a backup lamp on a vehicle. To install the light assemblies, you can use the 2-Wire Pigtail # A45CB. The white wire will be attached to a bare metal surface of the frame for ground,...
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  • How Does Trailer with 7-Way Wire to Reverse Lights
    Since you have a 7-way you have the reverse light circuit pin already present so you'd need just to wire from the center pin of the 7-way to reverse lights like the # BUL78CB.
    view full answer...
  • Will the Optronics Snap-on Reflector Ring # A78RXB Fit STL78 and BUL78 Trailer Lights
    I spoke with my contact at Optronics and verified that the Snap-on Reflector Ring, # A78RXB, will fit the BUL78 and STL78 series LED trailer lights. The configurations of the lights are the exact same. The only difference is one is a backup light (BUL78) and one is a stop, turn and tail light (STL78). It is not customary to put a red reflector ring around a clear light, but there is no reason why you could not do that. Keep in mind, the # BUL78CB is a utility light, so it will have a...
    view full answer...
  • What is the Power Draw For Sealed, 6-1/2 Inch Oval LED Trailer Utility Light, # BUL78CB
    The Sealed, 6-1/2 Inch Oval LED Trailer Utility Light, # BUL78CB, as a whole, draws 0.080 amps at 12.8 volts. To determine watts, you would take amps and multiply by volts to get 1.024 watts consumed. You may also be interested in Chrome Accent Ring, # A78CB, to provide a little dress up and some extra protection.
    view full answer...
  • Troubleshooting Utility Trailer Lights not Working When Hitched to Tow Vehicle
    If your trailer lights are not working when you are hitched to your tow vehicle but are otherwise fine you have a ground problem most likely. Check your grounds to make sure your they are attached to bare metal surfaces and free of any paint, dirt or corrosion. It is also possible that you have a problem with a bare wire touching the frame somewhere on your trailer so check your wiring thoroughly to make sure there are no broken wires. I have also added a link to a wiring troubleshooting...
    view full answer...
  • Is the Sealed, 6-1/2" Oval LED Trailer Utility Light # BUL78CB SAE Rated
    The Sealed, 6-1/2" Oval LED Trailer Utility Light # BUL78CB is intended to be used as a utility light and is not rated or certified to be used as a reverse light or anything else DOT related. This would be a great light to light up the interior of an enclosed trailer or if you needed to light up an area on the exterior of your trailer at night. As far as DOT or SAE is concerned it has no specific ratings since it's not designed for taillight signal use. I attached a review video for this...
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  • Recommended Lights for 28 Foot Gooseneck Horse Trailer
    The LED Trailer Tail Light - Stop, Tail, Turn, Backup - Submersible - 14 Diodes - Oval - Pigtail # STL68RB will help give you backup lights, with 4 bright white LED's. Since you stated that your main goal is to gain backup lights, the Sealed 6-1/2" Oval LED Trailer Utility Light, Flange Mount, 10 Super Diode - Clear # BUL78CB has 10 bright LED lights that will give you a much better light for backing up, so I recommend leaving your current lights and adding these brighter lights. They...
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  • DOT Approved Trailer LED Reverse Light and an LED Interior Trailer Light
    Optronics light # BUL78CB is a utility light so it is not DOT approved to be used as anything other than that. For the interior of the trailer it will work fine, it doesn't have to be DOT approved since it isn't a tail, marker, reverse, brake, or turn signal light. It is about as tough as any other trailer light that you would find but I would not expose it to repeated impact from cargo. the lens or flange would eventually crack. If you are looking for a DOT approved reverse light with...
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  • Trailer Lighting Needed for Loading a Boat onto a Trailer In the Dark
    The Optronics Transit LED Backup Light, part # BUL90CB would be a brighter light than the Optronics Sealed, Oval LED Trailer Utility Light, part # BUL78CB. It would work great for a lighting up the area behind your boat trailer for loading a boat in the dark. The # BUL90CB is also a submersible light which means it has a sealed, waterproof housing and lens. This will be be a good feature since you are using this light on the back of a boat trailer that will be backing down a boat ramp....
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  • Is a Rubber Grommet Needed to Install Optronics Oval 10-LED Trailer Utility Light # BUL78CB
    The Optronics Oval 10-LED Trailer Utility Light, part # BUL78CB, is made with a built-in mounting flange for surface-mount installation where there is no cut-out for the fixture. This item includes both ground and positive wire leads that exit from the rear of the housing. This product does not require a rubber mounting grommet as do some similar products from Optronics, although we do offer a snap-on chrome-finish accent ring for it, part # A78CB. For example, their # BUL72CB is a similar...
    view full answer...
  • Why is the Optronics LED Clear Oval Trailer Utility Light # BUL72CB Not Certified as a Backup Light
    The Sealed, 6-1/2 inch Oval LED Trailer Utility Light, Flange Mount, 10 Super Diode - Clear, item # BUL78CB, does not meet DOT FMVSS 108 requirements, for backup lights so it cannot be sold as a backup light. That does not mean that the light cannot be used in that situation for applications where a DOT requirement does not need to be met. In short, the Trailer Utility Light, item # BUL78CB, can be used as a backup light, but if your trailer needs to meet DOT requirements you will need...
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  • White Reverse Light Similar to Truck Lite Model 66
    Probably the closest light we have to the TRUCK LITE MODEL 66 you mentioned is the part # BUL78CB which is an LED surface mount light very similar in size and install.
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  • Brightness of the Sealed, 6-1/2" Oval LED Trailer Utility Light # BUL78CB
    The Sealed, 6-1/2" Oval LED Trailer Utility Light # BUL78CB that you referenced is very bright. This light produces 175 candela which should be brighter than DOT back up lights. I attached a review video for more info. There are no DOT standards that dictate that a reverse light has to be at least a certain brightness so it's hard to say for certain if this light would be brighter than any DOT reverse light. But considering how bright this light is I would imagine it is much brighter than...
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  • Comparing Optronics LED Lights Candela Output
    My contact at Optronics was able to give me a brightness comparison between their LED lights # BUL78CB and # ILL31CB. Although both use 10 LEDs, the BUL78CB uses super diodes that deliver a lot more actual light output. Optronics was able to give me the candela specification for each light. This scale differs from lumens but it still gives you a good comparison basis. A common candle emits light with a luminous intensity of roughly one candela. Light # ILL31CB offers 44 candela output...
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  • Gauge of Wire Leads for Optronics LED # BUL78CB Trailer Utility Light
    The wire leads for the Optronics # BUL78CB are 18 gauge, so you'd want to use the appropriate gauge wire. We don't carry bulk 18 gauge wire, but 16 gauge like part # 16-1-1 and heat shrink butt connectors like # DW05744-5 would work well for you. The connector will be a little big for the 18 gauge wire, but all you'd need to do is strip back an extra 1/4 inch of the insulation and double the copper back upon itself to add some thickness.
    view full answer...
  • Availability of Reverse Light Similar in Shape and Size to MCL48CAB
    For a similar light that is white that would work well as a reverse light you would want the part # BUL78CB. There isn't a white version of the # MCL48CAB. The # BUL78CB is a similar flange mount light that measures 7-1/2L x 3-1/4W Inch. I attached a review video for the light for you to check out as well.
    view full answer...
    Image 1 for
  • Stop, Turn, Running and Reverse Lamp Compatible with Optronics A78RXB Snap-On Reflector Ring
    The # A78RXB snap on reflector ring you mentioned is only compatible with Optronics STL78 series taillights like the # STL78RB , none of which has the provision for a reverse lamp. Your best bet would be to use a # STL78RB stop/turn/taillight and a separate reverse lamp like # BUL78CB which is a surface mount lamp like the # STL78RB.
    view full answer...
  • Optronics Oval LED Trailer Light Recommendation for a 53 ft Enclosed Trailer
    The Sealed, 6-1/2 inch Oval LED Trailer Utility Light # BUL78CB that you referenced would be an excellent choice to provide lighting on a trailer to help with night time loading. Since it is an LED light it would not put an excessive load on your trailer wiring either. Check out the review video I attached for this light also. If you wanted to dress up the appearance of the light you could get a Chrome Accent Ring # A78CB also.
    view full answer...
  • Light Bar for Reverse Lights That Will Work on Back of 2018 Chevy Silverado 1500
    There may be a solution for you, though each of the back-up lights we have available are for trailers and are going to be recess or surface mount, so if your topper is at an angle the lights will be as well. So if you want to really light things up you could use a license plate mounting bracket and light bar. The License Plate Frame Mount for Putco 10" Luminix LED Light Bar # P2281 and Luminix Off-Road Light Bar # P10010. This will not work as a back-up light but you can use Wireless...
    view full answer...


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