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Optronics 12V LED RV Dome Light - Single - 6-3/8" Long x 4-3/16" Wide - White Housing

Optronics 12V LED RV Dome Light - Single - 6-3/8" Long x 4-3/16" Wide - White Housing

Item # RVILL33
Our Price: $10.11
RV Interior Lights
Shipping Weight: 0.25 lbs
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Use integrated switch or wire to a light switch to turn this single dome light on and off. Perfect for brightening up your RV kitchen when doing dishes or your enclosed trailer when loading gear. LEDs last longer and burn brighter than incandescents. Great Prices for the best rv interior lights from Optronics. Optronics 12V LED RV Dome Light - Single - 6-3/8" Long x 4-3/16" Wide - White Housing part number RVILL33 can be ordered online at or call 1-800-940-8924 for expert service.
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Optronics RV Interior Lights - RVILL33

  • Dome Light
  • LED Light
  • Surface Mount
  • Switch
  • 12V
  • 6-3/8L x 4-3/16W Inch
  • White
  • Optronics
  • Warm White

Use integrated switch or wire to a light switch to turn this single dome light on and off. Perfect for brightening up your RV kitchen when doing dishes or your enclosed trailer when loading gear. LEDs last longer and burn brighter than incandescents.


  • Single dome light is perfect underneath a kitchen cabinet or above a shower in your RV
  • Included energy-efficient, warm white LEDs last longer and burn brighter than incandescent bulbs
  • Integrated toggle switch lets you turn the light on and off
    • Can also be wired to an interior, dimmable light switch
  • Clear plastic lens is less likely to shatter than a glass lens
    • Textured pattern helps disperse bright light throughout your RV
  • Durable, white polycarbonate plastic construction
  • Easy, bolt-on installation onto the surface of your ceiling or wall - hardware not included
    • 2-Wire design - white for ground and black for power


  • Overall dimensions: 6-3/8" long x 4-3/16" wide x 1-13/16" deep
  • Mounting hole spacing (center to center):
    • Up and down: 2-3/4"
    • Side by side: 2-9/16"
  • Voltage: 12V DC
  • Power draw at 12.8V: 0.3 amps
  • Light output:
    • Raw lumens: 460 lumens
    • Effective lumens: 407 lumens
  • Color temperature: 3,150 Kelvin
  • Number of LEDs: 9
  • Lifetime warranty on LEDs

Optronics Dome Light Dimensional Diagram

Need extra light over your camper kitchen sink for when you do the dishes? Or perhaps you need to upgrade the dim, old lights in your enclosed car hauler? This dome light has warm white LEDs that give you brighter light underneath a kitchen cabinet, in a walkway, above a shower stall, or inside a small hunting cabin.

Optronics Dome LEDs

LEDs are more energy efficient, last longer, and burn brighter than lights with incandescent bulbs. You won't have to worry about replacing bulbs that have brittle filaments. And because LEDs draw minimal power, the light won't drain your battery, overload your circuits, or produce too much heat.

Raw Lumens vs. Effective Lumens

Lumens are utilized to measure the actual amount of light that you can see and use from a light source. If you need a super bright light for a workspace, you will want to go with a light that has a higher lumen count. If you want a softer glow in an RV living space, you should go with a light that has a lower lumen count.

Light sources typically have 2 different kinds of lumens: raw and effective. Raw lumens represent the natural amount of light that a manufacturer says their light fixtures can produce. Effective lumens, on the other hand, represent the usable brightness of the entire light assembly, including the drive method or any lenses or reflectors.

Surface-Mount, Bolt-On Installation is Easy

Optronics Dome Light Installed

This surface-mount dome light is incredibly easy to install as an upgrade or direct replacement of your existing light. To access the bolt holes, pull the lens up and away from the housing. Do not use any tools to remove the lens, as it will crack. Then, using hardware (not included), bolt the housing onto the ceiling, wall, or cabinet before re-installing the lens. The light has a 2-wire design that hooks up to ground (white wire) and power (black wire). Once you're finished, you can then turn the light on and off using the integrated toggle switch in the center of the light. And if you want to be able to control the brightness of the light, you can connect it to an LED-compatible dimmer switch (not included).

RVILL33 Optronics 12 Volt LED RV Pancake Light - Surface Mount - 9 LEDs - White Housing

Compares to Camco CAM41331

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Customer Satisfaction Score:

Customer Reviews

Optronics 12V LED RV Dome Light - Single - 6-3/8" Long x 4-3/16" Wide - White Housing - RVILL33

Average Customer Rating:  4.8 out of 5 stars   (497 Customer Reviews)

Use integrated switch or wire to a light switch to turn this single dome light on and off. Perfect for brightening up your RV kitchen when doing dishes or your enclosed trailer when loading gear. LEDs last longer and burn brighter than incandescents.


Bought for replacing light fixture that had hot burning bulb in rv, was a perfect fit, easy to install,more light output than bulb fixture, and runs very cool temp.Have had for 1 year now and no problems. Verry happy with these lights,good price and fast shipping.


work nice, have gone though most of my older camper and cargo trailer with this model and double version, I like the warmer white ones not as much of a blueish light, much brighter than traditional dome light bulbs.

sometimes the flicker a little when running off vehicle, but probably slight voltage fluctuation, also I've found they don't work with some switching mode power supplies but will work fine off batteries/clean DC


Like the many satisfied reviewers above, I love these new LED light fixtures. I installed nine of them in an afternoon, including a trip to the hardware store to pick up some wire nuts. My Springdale trailer had crimped wire connectors which I cut off. Here are a few pictures of the results.

Steve I.


The LED light fixtures are great. The light output is bright and easy on the eyes. I spent three weeks boondocking in the desert last year and my batteries lasted a very long time. Well worth the the reasonable cost and easy installation. Friends have commented on the lights and well be covering to LEDs also.


I used these lights under the cabinets that are above my break (mini kitchenette) and under the cabinets mounted above the work stations area of my office trailer. They are a great addition to the overhead lighting fixtures (dual version of this same light). Couldn't be happier with my decision to use this fixture.

Donald V.


After using these lights for a year, I Couldnt be happier with them. They provide just the right amount of light for my work stations.


I have bought several items from etrailer and their products have been good and did what they said. So far very happy with them....In two pics you can see the old factory lights in comparison to the news ones and the new ones do not git hot like factory ones

Lonnie P.


very well and have ordered other ones


We bought two of these lights and installed one in each part our small rv closet, which was pretty dark before. They are perfect: they brighten the space nicely and the yellow LEDs look really warm. We had to read on how to slide the clear cover off in order to install, but it was no big deal. The fixtures are light but seem sturdy. The etrailer website was well-organized and one of the only sites with real pictures, so we felt comfortable that this light would be exactly what we wanted.


I purchased 7 double lights and 2 single lights last week and my wife and I installed them in our RV. They are so much brighter and cooler operating than our other lights, we love them. We would recommend these lights to anyone that needed new lights, Thanks etrailer. We replaced our old lights because they were a hot burning light and the plugs in the old lights were turning dark or black because of the heat of the bulbs.


As I age the lighting in my trailer becomes less bright. I decided to go with LED lighting . when I went online to research your company popped and checking you selections were exactly what I was looking for. I bought two of the double lens and was very pleased with the results. The lights actually fit the hole pattern of the old ones so didn't have to drill new holes in the ceiling. I bought 6 more, 2 of the single lens and 4 more doubles. very bright in my RV now. Thank you for your great service.


Great job!! Getting orders out and deli vered


I was surprised that I got my last order so promptly. Once again it was an easy job replacing 4 more old fixtures with etrailer's RVILL33. The difference in lighting is truly welcome at our trailer.

A photo of one of the old fixtures, and one of the new fixtures.


After hearing good things about LED lighting for 12v systems I decided to give it a try. Cost for me is an issue so I purchased this one and so far I am not disappointed. I have gone ahead and ordered another one.


Erickson always has very good products.


The lights were average and were very easy to install. I would have liked a bright white LED. Overall they are very nice.


I placed one of these lights on the side walls in my 8' x 5' box trailer last summer ('16) and each is still burning bright. I'm happy to report that the interior of my trailer continues to be very well lit.


I ordered the led replacement lights for my camper.I must say the wed site is easy to use,delivery time was awesome, and install was extremely quick and easy.The new lights made a huge difference in my camper and I highly recommend the product.


Great lights and easy install it’s really nice to every overhead light has a on/off switch


Installed light on my wife's Honda PCX 125 for underseat storage area. The light is bright, compact and lightweight with a low price.


Great replacement for original incandescent units.


The lights provide nice lighting for the dinette and galley area of my 1969 Gold Star trailer I restored. The lenses are a bit tricky to remove in order to screw the base onto the underside of the cabinets, but I was able to do so without breaking them.


Nice looking light. Easy to install and bright as expected . Great upgrade for my teardrop camper. Lens is a tight fit so take care when sliding it off light body.


Ompressed.LED light bulbs built into the fixtures which means no light bulb replacement needed.


The lights themselves are nice, but, due to the difference in size from my original square/rectangle style, indentations in the ceiling are visible from the old ones without making custom trim plates to cover. I ended up switching to another brand that very closely held the old shape and size to avoid the custom trim.


Let me start out by saying I love these etrailer lights, and the drain on the batteries is negligible. Like other reviewers, I have to agree the lenses on the lights were a bit difficult to remove. I was afraid of breaking them but realized they are quite tough. By using my squeekie-clean palms of my hands and sliding back, the lenses came off easily. The lights, while much lighter in weight than the factory lights, are very high quality. The lights were very easy to mount, the diffusers spread the light evenly, and the light they put out compared to the incandescent is amazing... almost double. With all the lights on in my trailer there are no dark spots anywhere, yet there is no harsh glare even when sitting on the couch with the overhead and wall lights on. I replaces 8 of 10 lights in the trailer leaving only a couple of lights we never use. I highly recommend these lights.

Paul D.


A year in to the lights and they still out perform any other product out there. No more worrying about battery drain or weather we will have enough light to read small print. I have recommended them to friends and they are also very impressed.


I ordered this light to replace the bathroom ceiling light in my motorhome. My mistake was that the old light was wider than this one. I kept this light and gave it to a friend Then I ordered the light that looks like two of these lights in one housing, which I installed yesterday. That double sized product is "Optronics LED RV Interior Light with Switch - 18 Diodes - Surface Mount - White Housing
Item # RVILL34". The great thing about these lights is that the whole fixture with LEDs included costs quite a bit less than buying an LED panel that replaes just an incandescent bulb. In my case, I could not find a bulb replacement (incandescent to LED) that would fit the socket of the incandescent bulb. The LED array of this product is brighter and cheaper to operate. It was easy to find the product on the etrailer web site, the price was right, and shipping was reasonably fast even though I am in Seattle and the product shipped from the midwest by UPS + USPS .

Gerald S.


It still works great. We like the lower use of precious RV electricity.


After a year of use, it's still in good shape and working well.

Show More Reviews

See what our Experts say about this Optronics RV Interior Lights

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    We have a large selection of dome light fixtures that will work nicely for your travel trailer, such as the Optronics LED RV Interior Light with Switch # RVILL33. This is a bright, surface-mount LED light with an on/off switch and a white, snap-on lens. It features a 2-wire design (power and ground) and measures 6-3/8 inches long, 4-3/16 inches tall, and 1-13/16 inches deep. I have attached a short video demonstration on this particular light that you can check out. I have also included...
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  • Do 12 Volt Lights that Get Added to Trailer Interior Need to be Grounded
    The 12 volt lights that you plan to install will need to be grounded in order to function. You can do this by attaching the ground wire of the lights to the frame of the trailer or you can run them back to the negative post of the battery. Either way though they have to be grounded to function properly.
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  • Measurement of Mounting Holes for Optronics LED RV Interior Dome Light with Switch RVILL33
    The Optronics LED RV Interior Dome Light with Switch, # RVILL33 has a distance between mounting holes as follows. Length wise, 2-9/16" between each row with sorter row having 1-3/4" center-to-center and the longer row, 2-3/4" center-to-center. Please note the linked product review video where these measurements are shown, starting about the 2:20 mark.
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  • What is the Kelvin Light Rating of the Optronics LED RV Interior Light # RVILL33
    I reached out to my contact at Optronics who said that the Optronics LED RV Interior Light # RVILL33 that you referenced has a Kelvin rating of 3050-3250K. As far as surge protection goes, it has a ground wire so a little influx should be okay, but if you are talking about a bigger surge then it may be an issue as with anything else connected to that circuit.
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  • Replacement RV Interior Lights and Light Replacement Parts
    Usually a light's actual part number is found on the base portion rather than the lens. I could not find any lights or light parts using the code you provided, Z4-738-WC. But we do have lots of replacement light as well as replacement lens parts. I included two links for you; one to complete interior lights and one to replacement parts for interior lights. If you cannot find a lens to match your original you may be able to find a whole new light assembly that will fit. If you do end up...
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  • Is Resistor Needed to Install Optronics LED RV Interior Lamp
    The Optronics LED RV Interior lamp you mentioned, part # RVILL33 can indeed be installed directly to 12 volt power. The lamp has two wires, the black wire connects to a 12 volt power source, the white to ground. No resistor is necessary. Optronics offers a lifetime warranty on the LED's.
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  • Replacement RV Interior Light for Optronics LED RV Interior Light with Switch
    The Optronics LED RV Interior Light with Switch - 9 Diode - Surface Mount - White Housing # RVILL33 does not have a replacement lens available. The pricepoint makes the entire unit a very affordable replacement part.
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  • How To Remove Lens of Optronics LED RV Interior Light # RVILL33 to Access Mounting Holes
    To remove the lens of the Optronics # RVILL33 lamp, you simply push the lens away from the switch as you can see in the photo I've provided and in the video. Once the lens is removed, you can easily access the mounting holes.
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  • RV Interior Dome Light Replacement Similar to Optronics RVILL33
    We have the similar Gustafson RV light part # 277-000337 which would give you the style of light you are wanting but in a more reliable setup.
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  • Trailer Interior LED Dome Light with Built-In Switch
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  • Questions For Electrical on Dodge Van Rewire
    May I first suggest looking over some of our help articles that I have linked. In addition, for solar, I suggest the Go Power Weekender ISW RV Solar Charging System - 190 Watt Solar Panel - 1,500 Watt Inverter, # 34282183 as a good starting point. The Optronics LED RV Interior Dome Light with Switch, # RVILL33, that you ask about has a power draw of only 12.8V and 0.3 amps. Producing an effective lumen output of 407. I suggest you consider the Go Power RV Converter and Smart Battery...
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  • How to Wire the Optronics LED Light to a 1999 Winnebago Minnie
    The Optronics LED RV Interior Light, # RVILL33, has a two wire connection. The black wire is for 12 volt power and the white wire is to ground. To figure out which wire goes where on you RV, I recommend using a circuit tester like # PTW2993 to test your RV's wires to see which has power and which is the ground. This will help if your RV wiring is a different color than the light. I would test even if your wires are black and white just to make sure you have the correct wire.
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  • Replacement Interior Trailer Light for 2000 Venture Tent Trailer
    The Replacement Lens for Arcon Euro Style LED Dome Light part # AR18017 is the replacement lens for Arcon Euro-style LED dome light part # AR51268 (which is no longer available) so I am not sure if it will fit your Bargman light unless it is the same dimensions and shape. I was not able to find any information based off of the number you gave me on your current Bargman lens. If you could provide me with the dimensions and a photo of your existing lens it will make it easier to narrow down...
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  • Quick Splice Connectors for Installing Optronics LED RV Interior Dome Light # RVILL33
    The quick splice connectors part # SWC502905-1 would cover your wiring needs for the # RVILL33 as this is designed to fit wire gauges between 14 and 18 which would be standard for the wiring of this light.
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  • Recommended Replacement LED Dome Light for Winnebago
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  • Recommended Replacement Interior RV LED Light for Above Kitchen Sink
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  • Options for Adding Interior Lighting to Enclosed Cargo Trailer
    For your enclosed trailer application I have several suggestions for adding interior lighting that you can control directly via a switch. Since your current 4-pole trailer wiring does NOT include a 12V auxiliary power feed that could power inside lights separate from the trailer's exterior lights, I suggest adding a separate 12V battery to the trailer interior and installing one or more LED-type lights that are bright yet highly efficient. In order to power interior trailer lights from...
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  • Options for Amber Trailer Exterior Lights
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  • Replacement Interior Lights for Camper Trailer
    Typically, if the socket is burnt or damaged then it would be best to replace the entire lighting fixture as most of the sockets will not be replaceable nor do we offer any replacement sockets. I have attached a list of our interior lights for you. If you can send a photo with some dimensions I would be happy to help match something up for you but if not I really like the Optronics LED RV Interior Light part # RVILL33 because it has a 9 LED diodes with an on/off switch. It puts out 460...
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  • LED Lights and Dimmer Switch Compatibility
    The Optronics LED RV Interior Light with Switch - 9 Diode - Surface Mount # RVILL33 is a dimmable LED Light when used with a compatible dimmer switch. We don't carry the dimmer switch, but according to my contact it will be compatible. They said the switch will dictate how well it dims. Many other lights like the LED Interior Trailer Dome Light - 39 Diode - White Housing # ILL39CB can also be dimmed using a dimmer switch, but there are a few lights that are not dimmable. The LED lights...
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  • Can LED's Be Replaced Or Does The Whole Light Fixture Have To Be Replaced
    It really just depends on if the light has bulb style LED light bulb or if it's hardwired into the casing. If it's a simple bulb like part # DI86VR you could pull it out and replace it. The # DI86VR is designed to replace 194, 906, and 921 bulbs. If the LED panel is hardwired like the Optronics 12V LED RV Dome Light # RVILL33 you were looking at then you'd have to replace the entire light.
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  • Recommended Interior and Exterior LED Lighting for Enclosed Box Trailer
    We've got the lighting items you need for your high school band's instrument trailer. I strongly recommend you opt for LED-type lights, rather than standard incandescent bulb lights. There are several advantages to using LED lights. LEDs use only about 1/10th the power required by incandescent lights. Their efficiency also means less waste heat, which can matter a lot in warm weather when the sun has already heated up the trailer interior. They also do not change color with age the way...
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  • Optronics LED Interior Lights That Function on Dimmer Switch
    The Optronics LED Trailer License Plate Light # LPL11CB that you referenced WILL work on a dimmer; my contact at Optronics was kind enough to test it. This light operates down to 5.4V at which power input it is fairly dim. Optronics LED Interior Light # RVILL33 is also a dimmable LED Light when used with a 12V dimmer switch (which we don't carry) and so is # ILL39CB.
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Info for this part was:

Employee Mike L
Expert Research:
Mike L
Employee Jameson C
Expert Research:
Jameson C
Employee Laura H
Written by:
Laura H
Employee Dustin K
Video Edited:
Dustin K
Employee Chris R
Video Edited:
Chris R
Employee Cole B
Installed by:
Cole B
Employee Hayden R
Installed by:
Hayden R
Employee Mary K
Updated by:
Mary K
Employee Wilson B
Updated by:
Wilson B
Employee Brian T
Updated by:
Brian T
Employee Jacob H
Test Fit:
Jacob H
Employee Thomas T
Video by:
Thomas T

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