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Opti-Brite LED RV Dome Light w/ Switch - 810 Lumens - Surface Mount - Clear Lens

Opti-Brite LED RV Dome Light w/ Switch - 810 Lumens - Surface Mount - Clear Lens

Item # ILL22CB
Our Price: $21.52
You Save: 42%
RV Exterior Lights
Shipping Weight: 0.21 lbs
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4-1/2" x 2-7/8" x 1". Low-profile dome light illuminates an RV's interior with bright white light. Toggle switch controls power. Durable polycarbonate lens and housing. Surface mount - hardware not included. 2-Wire design. Great Prices for the best rv exterior lights from Optronics. Opti-Brite LED RV Dome Light w/ Switch - 810 Lumens - Surface Mount - Clear Lens part number ILL22CB can be ordered online at or call 1-800-940-8924 for expert service.
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  • Reviews (145)
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Optronics RV Exterior Lights - ILL22CB

  • Utility Light
  • LED Light
  • 12V
  • White
  • 4-1/2L x 2-1/2W Inch
  • Recessed Mount
  • Optronics

4-1/2" x 2-7/8" x 1". Low-profile dome light illuminates an RV's interior with bright white light. Toggle switch controls power. Durable polycarbonate lens and housing. Surface mount - hardware not included. 2-Wire design.


  • Low-profile, rectangular dome light provides bright white light for your trailer's interior
  • Built-in toggle switch controls on/off function
  • Durable surface-mount technology (SMT) construction of LED circuit board
    • Better withstands shock and vibration
    • Allows for improved heat distribution
  • LEDs make great replacements for incandescent lights
    • Lasts 50 times longer
    • More efficient - provides brighter light with less power output
    • No bulbs to replace - no brittle filaments
  • Clear polycarbonate lens with white LEDS
  • Sonically sealed, waterproof housing and lens
  • Compatible with 12V DC systems
  • Surface mount - hardware not included
  • 2-Wire pigtail - includes power lead and ground wire


  • Light output:
    • Effective lumen output: 810 lumens
    • Raw lumen output: 1,044 lumens
  • Diodes: 18
  • Dimensions: 4-1/2" long x 2-7/8" tall x 1" thick
  • Wiring length: 6"
  • Power draw at 12.8V: 0.7 amps
  • Lifetime warranty on LEDs

Optronics ILL22 Series LED Dome Light Diagram

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 internal components.

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 1,044 raw lumen capacity and produces 810 effective lumens.

ILL22CB Optronics Opti Brite LED Motorhome Dome Light w/ Toggle Switch - Waterproof - 18 Diodes - 1,044 Raw Lumens - Rectangle - Clear Lens

California residents: click here

Customer Reviews

Opti-Brite LED RV Dome Light w/ Switch - 810 Lumens - Surface Mount - Clear Lens - ILL22CB

Average Customer Rating:  4.8 out of 5 stars   (145 Customer Reviews)

4-1/2" x 2-7/8" x 1". Low-profile dome light illuminates an RV's interior with bright white light. Toggle switch controls power. Durable polycarbonate lens and housing. Surface mount - hardware not included. 2-Wire design.


Added one inside my cargo and one on the outside of my cargo trailer, I love them! The put out more light than I expected! Very crisp light that you can see anything in!



These are performing great! No problems a year out!


These lights are awesome, I installed three in a 22’ school band trailer, see the pictures. The kids could actually see in th trailer packing up after an away game.


Aloha! I am glad I found your product via internet search for lights. I
wanted to replace the battery powered interior light in my camper shell. I am tired of dead and leaking batteries which finally killed my light fixture. A little work to run a hot wire from the battery area along the frame into the truck bed, but worth it. I am using heavy duty Velcro loop portions to hold the wires to the camper shell liner: works very well. The light is very bright and really lights up the bed as well as the rear of the truck. I will definitely enjoy it.

Bob O.


I am using it as the interior light of my camper shell. It works great forthat, very bright and wide dispersal of light. I was happy to find such alight even it was meant for another use. Very nice equipment at a goodprice.


Have four of them in my camper-van and love them!! Of note: When mounting them, position them so that they are either above your head or behind you so they do not shine directly in your eyes for the most effective experience, as they are very bright. Quality, bright product at a reasonable price.



Excellent product!!! Have several of them. They are very bright dont take up much space are well constructed, and have not failed. Strongly recommend.


We installed about 12 of these in our remote rustic off grid backwoods cabin. They work great and only use a small amount of 12v power, .7 amps I think. They are very bright and have a built in switch. We use them inside and on our covered porch. They seem to be very well made. The light is very bright, but not blue-white like some LEDs. I highly recommend them and etrailer. In the cabin photo, there are 6 lights on, two on the porch and 4 inside the cabin.



Very bright and easy installation. Highly recommended.


Hi, I purchased 5 of your wonderful LED lights: 1LL22CB and LOVE LOVE LOVE them. I took some photos. If you like, you are welcome to put on your website for this light. These were all taken in the complete dark. No other lights around. When I was contemplating buying them, I wondered what they would look like on the outside of the trailer. WOW, they give off so much light. we also put one in our small tack room and it's wonderful. Just thought I'd send them for you to see or use. May God continue to bless your company. Your staff is really nice too. I've spoken with two different people and both were very pleasant and professional. I will be sending people your way!


Excellent little lamp for lighting the dark interior of a woodshed that I recently built. I did not want to run 110 volts out to this shed and hunted for an LED unit that I could power with an extra 12 volt battery. This fills the bill much better than expected. I am delighted with this product and have ordered an additional one for another project.


These lights are awesome! I've probably bought over two dozen of these lights so far but just now writing a review. These pack a lot of light for such a small and lite weight unit. I recently put 8 in my 18' enclosed trailer and probably could have used half as many but I wanted to super brite in there.


Installed the 810 lumens light in the hatch area of my Subaru SUV. Really lights up the area when the hatch is opened


Prompt service


Great Lights for a horse trailer


These lights have been mounted under the hood for a year and they function perfectly. They are subjected to a lot of heat, so I know they hold up well under normal operating conditions.


I was looking for a battery operated light to install in a woodshed that I recently built. I wasn’t satisfied with any of the products seen on the common websites and I thought of where I have had really good experiences with other items.

I checked on their RV offering and quickly found this lamp. It was received quickly and appears to be of outstanding manufacturing quality. I installed this lamp over the weekend and powered it with a small motorcycle style 12 volt battery.

I am exceptionally pleased with the result in my woodshed. The light is bright and of the “cool” variety which is exactly what I wanted. I was so pleased that I have purchased a second lamp and will likely purchase more in the Spring when sailing season resumes.



Terrific! It lights up my woodshed and uses almost no electricity to do it. I bought another unit for another task.


Product was as described. Easy to purchase, fast delivery and easy install. Always love etrailer's product review videos. I just installed disc brakes on my 5th wheel and wanted light where the pump is to check fluid levels in the actuator. Light is super bright. Worth the purchase

Robert N.


Still working great. Easy to install and bright lighting. I actually have 2 lights. The switch on it makes it easy to access. Worth the purchase.


I'm very happy with these lights (ILL22CB). We bought several of them to light the inside of our backwoods cabin. These2-wire 12 volt lights are very bright; just what we wanted. I would guess they provide about the same light as a "normal" 60 watt bulb. The light is very white; I guess it would be called "cool white". These would work very well to light the inside of a trailer. They seem to be very well made. Note that you do need to wire them correctly with the white wire to ground/negative and the black wire to positive; they will not light if the polarity is reversed. The etrailer video was very helpful.



A year later and all our lights are still working great. I think we have about 8 of them in our cabin. The work great in our backyard woods 12v cabin and Im sure they would work great in a cargo trailer.


I went t hook up and it doesn’t work. I have 12 volt power on one wire and a ground. And still does not light up when flipping the switch. Then I hooked it up directly to the battery and flipped the switch and it did not light. Please send me one that works


Year later still bright as ever I have them in my 18 wheeler and in various locations hooked up to my solar system.



Perfect! I live down 50 miles of rock road and the vibration in my 18 wheeler still havent killed them. Bright as day one.


I put these lights in a trailer I was rewiring. One in the tack compartment. One on outside above tack compartment and two in horse compartment. I checked them and in less than 6 months none of them worked. I know that they were wired correctly because they worked when first installed.

Etrailer Expert

Mike L.


Its pretty rare although not completely unheard of for three lamps to fail at the same time. Id recommend using a circuit tester or multi-meter on the circuit feeding the lamps to ensure they are getting power. Id suspect a bad fuse or breaker is probably causing the issue.


Used this light on the inside storage box on a canoe trailer. Very bright and doe not hardly use any power at all, but unfortunately it stopped working about two months ago.

Etrailer Expert

Jenny N.


I will have our customer service team reach out to you. The light has a limited lifetime warranty on the LEDs.


Awesome. Way WAY brighter than my old truck shell dome light. Love it.


perfect replacement


I installed the lights in me 28 ft race car trailer and the amount of light each if the four produce is well suffucent to ellinate and dark spots in the trailer !! Well pleased !!





We needed something that could light the interior of the concession trailer while the generator was not running. So we installed this light inside to run off the trailer lights hook up. Provides plenty of light for clean up. Perfect fit for my application. Easy install.


Great experience dealing withe trailer. Reasonable prices and greT shipping. The lights were exceptional and provide far more light than I thought they would. Can't wait to do business with these folks again.

Bob S.


Still very happy with lights. Will probably be ordering more soon

Show More Reviews

See what our Experts say about this Optronics RV Exterior Lights

  • Which Optronics Utility Light is Brighter Between the # ILL24CB and the # ILL22CB
    The Optronics # ILL24CB is going to be brighter than the Optronics # ILL22CB. In the videos and photos they are of the lights installed on different trailers and mounting locations so yes, it is very hard to tell. The # ILL22CB is also being demonstrated in an all white trailer with the interior of the installation bay's lights on, which white carries light so this could explain why it appears brighter. We are limited to installation videos on customer requests so while they are not...
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  • Dimensions of the LED Rectangular Interior/Exterior Light # ILL22CB
    I went and pulled a LED Rectangular Interior/Exterior Light # ILL22CB from our warehouse and found the dimensions to be 4-1/2 inches by 2-1/2 inches. Check out picture I attached that shows these dimensions.
    view full answer...
    Image 1 for
  • Dimensions of the LED Rectangular Interior/Exterior Light # ILL22CB
    I went and pulled a LED Rectangular Interior/Exterior Light # ILL22CB from our warehouse and found the dimensions to be 4-1/2 inches by 2-1/2 inches. Check out picture I attached that shows these dimensions.
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  • Replacement External Lights for RV
    We offer a wide range of interior and exterior lighting products for RVs and motorhomes that can be accessed using the linked page. Just click on the type of light you need, and your preferred bulb type, color etc. For instance, for a rectangular utility light that will work fine indoors or out you can use the LED light # ILL22CB which features simple 2-wire connection and an on/off switch. Please feel free to tell me about the type of light you need if you cannot find a suitable item...
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  • How Many Amps Does the Optronics LED Rectangular Interior and Exterior Light, # ILL22CB Draw
    The Optronics LED Rectangular Interior and Exterior Light, # ILL22CB that you referenced draws .7 amps at 12 volts. To determine how many of these lights you could put on one circuit you would need to know the max draw for the circuit you plan to install the lights onto. You would then take that number and divide by .7.
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  • What is Thickness of LED Rectangular Interior/Exterior Light Item # ILL22CB
    The thickness of the LED Rectangular Interior/Exterior Light Item # ILL22CB that you referenced is 1 inch.
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  • Diameter of the Mount Holes on the Opti-Brite LED RV Dome Light part # ILL22CB?
    The mounting holes on the Opti-Brite LED RV Dome Light w/ Switch part # ILL22CB are just over 5/32" in diameter. I have also included a photo below showing the overall dimensions as well as the mounting hole spacing for your reference. To get a better look at the installation process or to get an idea of the brightness check out the video below.
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  • Can the Wires be Routed Through the Side of the Opti-Brite LED RV Dome Light Base
    The Opti-Brite LED RV Dome Light part # ILL22CB is a surface mount light therefore designed to be attached directly to the mating surface with the wires run out the back. This requires drilling a hole in the mating surface, center of the light so the wires can pass through. I can't recommend notching the light to pass the wire through the side of the base as this could allow water to get inside and would void the warranty of the light. Unfortunately, none of our surface mount lights allow...
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  • Wire Functioning of Optronics LED Light
    I pulled up your order and found that you have the Optronics LED Light # ILL22CB. On this light the black is the lead and the white is the ground. See the attached video.
    view full answer...
  • Dimensions of Optronics LED Rectangular Interior and Exterior Light # ILL22CB
    The Optronics LED Rectangular Interior and Exterior Light, # ILL22CB, measures approximately 4.5 inches x 2.75 inches x 1 inch with an effective output of 810 lumens. I have attached an info sheet for you. I spoke with my contact at Optronics and they do not have a similar light available with a lumen range of 250 - 350. My recommendation would be to install the # ILL22CB and a rheostat. A rheostat adjusts the resistance, which reduces the amount of circuit that gets to the light and in...
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  • Does the Bargman Porch / Utility Light # 3478518 Use a Bulb or LED's
    The Bargman # 3478518 uses an incandescent bulb. We don't have an LED version that's exactly the same, but the # ILL22CB is roughly the same size, measuring 4-1/2 by 2-1/2 inches.
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  • Recommended Exterior Light Brighter than Porch Light # RVPL7CB
    To replace the RV Porch and Utility Light - Oval - Incandescent # RVPL7CB with something brighter, I recommend the LED Rectangular Interior/Exterior Light # ILL22CB. I've attached a video of this product to help you compare the light output to the # RVPL7CB you currently have.
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  • Interior Trailer LED Light with a Switch
    We do have a similar light that is LED. Take a look at the LED rectangular light # ILL22CB. It uses LEDs instead of incandescent bulbs and it is one of only a few lights that has a switch built in. The other options would require a separate switch.
    view full answer...
  • Recommended Lighted Switch for Multiple LED Trailer Lights
    The LED Rectangular Interior/Exterior Light # ILL22CB can be run in a single string off a master switch like you stated. I've attached a video to help as the installation shows that there is a clearance light as well on this same circuit. Because these lights are LED and have a low power draw, you can run them in series or parallel. For a lighted switch, I recommend the Derale Lighted On/Off Switch for Electric Fans # D16740. I've attached a video to assist.
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  • Degree of Arc and Lumen Output of Optronics Galaxy Dome Light # 24004-7171
    I spoke with my Optronics representative, who told me that this particular lamp would be classified as an area lamp. It's meant to function as a dome light in a vehicle, providing general lighting for a small area. Optronics was unable to provide the lumen or Candela output of the lamp. The bulb can swivel about 15 degrees from center. The lamp is meant to flush mount to a surface, so to install it on the inside of your liftgate, you'd need to cut a hole for the lamp to sit in, which might...
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  • Recommended Exterior Trailer Lighting for Food Trailer
    There are certain requirements for lighting when towing, so you will have to run your lights in a way that doesn't interfere with the state laws. I'd recommend running your lights off a separate plug or battery to make that easy. To add to the functionality and/or look of your food trailer, any exterior light for RV or Trailers will work. I can give you a couple of options/styles to consider. I like LED lights because they are bright, require no maintenance, and draw less power. ...
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  • Wire Size to Use with Wiring in Opti-Brite LED RV Dome Light w/ Switch # ILL22CB
    The Opti-Brite LED RV Dome Light w/ Switch # ILL22CB only draws .7 of an amp when active so basically even the thinnest wire you'd find to use with this would easily be enough. This is due to fact LED lights draw such a small amount compared to standard bulbs. So realistically you could go super thing but super thin wire is harder to deal with so I'd go with 16 gauge as it's thick enough to be easy to work with but not overkill. We sell 16 gauge wire by the foot with part number 16-1-1.
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  • Installed LED Light But Other Lights Dim When LED is Turn On
    Sounds like it might be a wiring issue. Check to make sure your ground connection on the # ILL22CB is connected to a clean and bare metal. Also check to see if the power wire is connected securely and the wire is not touching any metal section of the trailer. LED lights draw less power to operate over the traditional incandescent bulbs. If the lights are dimming when this light is turned on, then somewhere there must be a wiring short that is causing the power drain. As for a LED light...
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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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  • Replacement Fixture for Clearance Light with Clear Lens
    The Rectangular LED Trailer Clearance and Side Marker Light with Reflex Reflector # MCL32AB is 4" wide x 2" tall x 1" deep. The closest option we have is the LED Rectangular Interior/Exterior Light # ILL22CB that is 4-1/2 inches by 2-1/2 inches and has an integrated switch or # ILL22CHB without the switch. The only blue/white option we have is the LED Trailer Utility or Hitch Light - 151 Lumens - White and Blue LEDs - Clear Lens # UCL09CBB. There are some restrictions on trailer lighting,...
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  • Recommendations for an Interior Trailer LED Dome Light
    There is a similar LED version that you can use. It is # RVILL34. I have linked a video review of this light for you.We actually have several LED interior lights you might like. I have included a link to them for you.
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  • Hopkins 12-Volt Power Inverter Adapter for 7-Way, RV Trailer Connector Hopkins Wiring Code: HM111
    The Hopkins 12-Volt Power Inverter Adapter for 7-Way, # HM11147650, is designed to wire a power inverter that will take the DC power from your vehicle's battery and turn it into AC power. You could use the plug to wire in a set of LED lights, like # ILL22CB. However, this will leave you with an extra plug connected to your trailer. If you already have a 7-way connector and plug on your vehicle and trailer, then you could run power off the 12-volt power line of the truck to operate your...
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  • Can Small Lights Appliances be Ran Off of Battery Installed in Trailer
    Depending on how long you are camping and how many accessories you need to run and for how long will dictate how big of a battery power source you would need to use. For what you are doing most people use a standard car battery in their trailer to power some small LED lights. LED lights hardly draw anything so they would be the way to go. For interior you would want the part # RVILL34. For an interior/exterior light that is also LED you would want the # ILL22CB. The part # 37185 can be...
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Info for this part was:

Employee Tricia G
Written by:
Tricia G
Employee Jameson C
Expert Research:
Jameson C
Employee Adam R
Expert Research:
Adam R
Employee Joshua S
Video Edited:
Joshua S
Employee Kathleen M
Video by:
Kathleen M
Employee Cole B
Installed by:
Cole B
Employee Brian T
Updated by:
Brian T

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