Optronics Backup Light for Trucks or Trailers - Submersible - Incandescent - Oval - Clear Lens

Optronics Backup Light for Trucks or Trailers - Submersible - Incandescent - Oval - Clear Lens

Item # BU70CB

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Trailer Lights BU70CB - Submersible Lights - Optronics
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  • Tail Lights
  • Oval
  • Incandescent Light
  • White
  • Recessed Mount
  • 6-1/2L x 2W Inch
  • Submersible Lights
  • Optronics
  • Backup
6-1/2" x 2-1/4" Oval. Waterproof incandescent light provides backup light function for trucks or trailers. Shock proof socket protects bulb. Recessed mount with grommet (sold separately). Accepts standard 2-prong plug. Lowest Prices for the best trailer lights from Optronics. Optronics Backup Light for Trucks or Trailers - Submersible - Incandescent - Oval - Clear Lens part number BU70CB can be ordered online at etrailer.com or call 800-298-8924 for expert service.


  • All Info
  • Reviews (141)
  • Q & A (17)
  • Videos (1)
  • Photos
  • Why etrailer?

Optronics Trailer Lights - BU70CB

6-1/2" x 2-1/4" Oval. Waterproof incandescent light provides backup light function for trucks or trailers. Shock proof socket protects bulb. Recessed mount with grommet (sold separately). Accepts standard 2-prong plug.


Features:

  • Oval backup light for trailers and utility trucks
  • Sonically sealed, waterproof housing and lens unit is submersible
  • Shock proof socket protects incandescent bulb
  • Incandescent bulb can be easily replaced
  • Durable polycarbonate housing and lens
  • Clear lens covers incandescent bulb
  • Compatible with 12V DC systems
  • Recessed mount with grommet (A70GB - sold separately)
  • Accepts industry standard 2-prong plug (A45CB or A49PB - sold separately)


Specs:

  • Dimensions: 6-1/2" long x 2-1/4" tall x 2-3/8" thick
  • Bulb type: incandescent
  • Power draw at 12.8V: 0.4 amps
  • 3-Year warranty


Manufacturer Cross Reference
Light will work as an exact replacement for:
Uni Bond # SE2238W
Wesbar # 203526
Truck Lite # 60204/60284
Grote # 62521
Peterson # M416
Bargman # 40-06-003

Optronics BU70 Series Sealed Back-Up 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.



BU70CB Optronics Backup Light for Trucks or Trailers - Submersible - Incandescent - Oval - Clear Lens

Alternate part number: BU-70CB






California residents: click here


Video of Optronics Backup Light for Trucks or Trailers - Submersible - Incandescent - Oval - Clear Lens


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




Video Transcript for Optronics Trailer Lights - Tail Lights - BU70CB Review

Today, we'll be reviewing part number BU70CB. This is the Optronics Sealed 6 1/2 inch Oval Trailer Backup Light. It is going to be a flush mount design. It's going to be a clear light, so the clear, oblong trailer light is going to function as your backup light. It's going to feature the sealed, water-proof housing, and lens unit. It's going to be corrosion resistant. It has the heavy, long-life bulb and the shock proof socket.

It's going to guarantee you a long bulb life. It will accept the industry standard three prong plug. This will flush mount with use of a mounting grommet and a three wire pigtail, which is going to be sold separately. Those are required for a complete installation. You can find a couple different options, when it comes to the three wire pigtail. You can use a straight, three wire pigtail.

Part number A45PB. You can find that right here at etrailer.com, or you can use a right angle, three wire pigtail with part number A47PB. We'll go over a few measurements real quick. It's going to give us an overall length of 6 1/2 inches. An overall depth of 2 3/8 of an inch. Then, the lens is going to give us a width of 2 1/4 of an inch. We're going to go ahead and connect our three prong plug.

It just goes in to the back side here. Once we have that connected, we can turn off our overhead lights. Turn on our power source. You can see there that, when the light is on, it's a very bright signal. Allowing a lot of light to come through.

That clear light with that clear lens is going to allow plenty of light to shine through. That way, you can get a clear signal for your backup trailer light. That's going to do it for today's review of part number BU70CB. This is the Optronics Sealed 6 1/2 inch Oval Trailer Backup Light. .


Customer Reviews

Optronics Backup Light for Trucks or Trailers - Submersible - Incandescent - Oval - Clear Lens - BU70CB

Average Customer Rating:  4.8 out of 5 stars   (141 Customer Reviews)

6-1/2" x 2-1/4" Oval. Waterproof incandescent light provides backup light function for trucks or trailers. Shock proof socket protects bulb. Recessed mount with grommet (sold separately). Accepts standard 2-prong plug.

- BU70CB
by:

I ordered both the back-up light and a signal/brake light. etrailer had the lowest price in my search and delivered in a short time with new parts that worked perfectly. Thank You! 665748



- BU70CB
by:

Great product! 575196



- BU70CB
by:

Still working great as all your products do . 430433



- BU70CB
by:

Very tight fit for dock lights on motorhome. Had to trim fiberglass to fit. Electrical Connection is exact match. 594849



- BU70CB
by:

Ordered 4 lights for my horse trailer. Called and spoke to a very helpful person who actually found what I needed when I didn't have a parts number or anything. Received the lights very quickly even though I used the economy shipping. Will certainly keep this link for my future needs. 427429



- BU70CB
by:

Not bad at all. I do wish they had the LED lights I was looking for. However the service, information about the shipping, and the processing of the other lights I was looking for was very smooth. 346375



- BU70CB
by:

Exact match, great price. Replaced both so the old yellowed lenses are gone. 704325



- BU70CB
by:

Product was exactly what I wanted and e-trailer was the only place I could find it online or locally. And, at a very reasonable price. The only problem was the UPS to USPS delivery system. Delivery was delayed because of the local USPS ofc holding up the delivery to my home. I would buy from e-trailer again. 700287



- BU70CB
by:

Only took about about 2 minutes to replace blown light with new one. Easy and simple. Looks good. 692777



- BU70CB
by:

received part right on time. There was a problem with part however etrailer customer service resolved my issue quickly. I will do business here again. highly recommended. 677906



- BU70CB
by:

Was exactly the part I needed. Pulled the old one out and slid the new right in its place. 3 minutes and back in Business. Thanks. 675417



- BU70CB
by:

Wish this size could be LED however this light was used as replacement for a backup light on a Skeeter boat trailer- it worked perfect and provides good light . 661003



- BU70CB
by:

Fits perfect in my boat trailer. Took less than 5 minutes to install a pair. Easy purchase. Thanks 653981



- BU70CB
by:

Prompt shipment and great quality! 651946



- BU70CB
by:

I’ve always got what I needed and very fast shipping... 637192



- BU70CB
by:

Best price I found for this back up lig ht. 611854



- BU70CB
by:

E-Trailer, I have 4 trailers and I have ordered parts for all of them over some years and you do me a very good job of getting me the correct parts and getting them to me fast. At a very reasonable price. Web site is awesome ! You are a very good company to purchase off of . Thanks 610655



- BU70CB
by:

Perfect fit, exact match, plugged right in - worked well 583844



- BU70CB
by:

They have both quit working. Can see inside because of the clear lens it has shorted out and is ruined. Cannot change bulb because it is a sealed unit. Very disappointed. Would not buy again. 578237



- BU70CB
by:

The light was easy to install and worked after initial installation. The problem I have with this product is that it lasted less than 3 weeks after installation before it quit working. Not sure I can recommend this light to be purchased and installed. 575317



- BU70CB
by:

Product just as described 569849



- BU70CB
by:

Awesome product. Great price! 554629



- BU70CB
by:

I purchased these lights t o replace the burnt one's on my Class C RV. The replacement lights worked perfectly. I would purchase again if needed. 547222



- BU70CB
by:

Exact replacement for trailer light and fast delivery. Exactly what I needed. 488743



- BU70CB
by:

Thanks, so far, all my experiences with etrailer have been good. I just purchased another trailer at 11am today, the day of your email... how weird is that? I bought it unexpectedly at auction! So, I have stuff to buy again. I will try to leave review for you. 475197



- BU70CB
by:

Will work great for what we need. Durab le! 471572



- BU70CB
by:

I purchased a docking light for our RV from etrailer.com. The ordering process was hassle free and the product shipped super quick. The light was a perfect match. Ordering through etrailer.com was such an easy process - I plan to order extra lights to have on hand. 467475



- BU70CB
by:

Exactly what I needed for custom flatbed on my truck. Can't get locally. Re-used previous rubber seal from old light. Slipped in fine. Even had dielectric gel on contact points. Thanks for quick shipping and easy ordering. Will buy more replacement lights from you in future. 462716



- BU70CB
by:

Perfect. Installed quickly and easily. Quickly shipped! 458743



- BU70CB
by:

works great 453737



- BU70CB
by:

Great products at great prices. My second time of doing business with them and I'll be back again the next time I need something. 451621



- BU70CB
by:

Very quick delivery on the exact part i needed. 449293



- BU70CB
by:

Great experience as usual 445228



- BU70CB
by:

Great price for the product and great price for shipping. I will definitely be buying all my trailer needs here!! 445126



- BU70CB
by:

Work perfect. Easy install. 435731



- BU70CB
by:

Great price and fast shipping.I will definitely be a repeat customer 435725



- BU70CB
by:

This is the first time I've shopped at etrailer but will say that it was a great experience. This shipping was fast and the light was a perfect fit in my horse trailer. I would definitely recommend this this site to anyone that needs similar items. 435396



- BU70CB
by:

Clear oval reverse light. Was a direct replacement for my old burned out light. Snapped in directly to my 3 prong wiring harness. Fast shipping. Excellent price. Thumbs up! 433602



- BU70CB
by:

arrived quickly and was the exact repla cement 417609



- BU70CB
by:

Great to find replacement lighting for 16yr old trailer. Simple installation, very good pricing. It works!!! Overall easy to find, order & install. 397129


Comments

It still works and fits like the original. I now keep a spare. I have used etrailer for several trailertowing parts now and the professional knowledge and service are top-notch!

Tony C - 06/22/2018

40078

- BU70CB
by:

My item was delivered on time and very easy to install. It has served me 100%. 390630



- BU70CB
by:

Great price & fast service 380817



- BU70CB
by:

This bulb worked perfectly. It's a 2 filament bulb instead of a single filament like the original, but that does't matter when used as a backup light.. 368800



- BU70CB
by:

The light is working fine after a year of use. Water is above the light every time I launch my boat. I have had no problem at all. It was easy to install. When I ordered the light I received it right away. The price was good and the service was great. I will use etrailer for parts whenever possible for future orders. 366140



- BU70CB
by:

Always find everything needed, site is consumer friendly and always receive product as expected. 362540



- BU70CB
by:

The light bulb burned out with less than 10 hours of use. The bulbs cannot be replaced so you have to buy a complete new fixture. 357928



- BU70CB
by:

Service was great and light has stayed new looking and is working like it should. 353382



- BU70CB
by:

Thanks for following up. Actually both burned out very quickly. :/ 351993



- BU70CB
by:

Product fit perfectly and continues to perform well a year later. 344557



- BU70CB
by:

Great product at the right price. Couldn't be happier 344206


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141
Show More Reviews

Ask the Experts about this Optronics Trailer Lights

Do you have a question about this Trailer Light?


  • What is the Candela Output of Optronics 6-1/2 Inch Incandescent and LED Tail Lights?
  • I do recommend you move to LED lights as they are going to last much longer than the incandescent lights on your horse trailer. As far as light output, Optronics generally measures their lights in candelas instead of lumens though at a distance of 1 foot candela is equal to lumens so you should have a good idea of how bright the lights are. I contacted Optronics and the representative was able to give me the candelas of each of the lights you were asking about. The incandescent # BU70CB...
    view full answer...

  • Replacement Clear 6-1/2 inch Long Clear Trailer Light
  • Sounds like you have something like the part # BU70CB or the # BUL22CB as they are both 6-1/2 inch long 2-1/4 inch wide clear lights that mount in a grommet and use a 3 prong style connector like part # A45CB.
    view full answer...

  • Replacement Interior Lamp for 2008 Exiss Sport Horse Trailer
  • Your existing lamp is an Optronics # BU70CB. The lamp is sealed, so the actual bulb inside is inaccessible. If the bulb burns out, you'd need to replace the entire lamp assembly, part # BU70CB. Because this lamp is rated as a reverse light for when the trailer is backing up, the DOT limits its brightness, and because it's an incandescent lamp it'll have a rather limited lifespan. I'd suggest going with an LED utility lamp like part # BUL72CB. You'd get a lamp that's the same dimensions,...
    view full answer...

  • Replacement Tail Light for 1998 Jayco Travel Trailer
  • Trailer manufacturers do not often maintain original parts information (or availability) for items such as lights, but we can certainly help you find a suitable replacement. You may want to just install a whole new light kit like # TL29BK or a high-efficiency LED kit # TLL9RK. This will avoid the same problem of no replacement part if the other light on your trailer should be damaged. Both kits include lights, a license plate bracket and all hardware. If you prefer to replace just...
    view full answer...

  • How to Provide Power to Trailer Reverse Lights
  • To connect back up lights you need to have a 7-way trailer connector on both your trailer and tow vehicle. On a 7-way the reverse lights are powered by the center pin. To connect reverse lights to the trailer's 7-way you can use 16 gauge wire # 16-1-1, or 14 gauge # DW07550-1 if you have a longer trailer. Both are sold by the foot. If you need reverse lights a couple of popular options are the Optronics LED Backup Light # BUL10CB for an LED that uses a 2-wire pigtail # A45CB to connect....
    view full answer...

  • Which Trailer Wiring Connector Has a Pin for Reverse Lights
  • In order to add reverse lights to a trailer would would need to have a 7-Way on the trailer, like # 50-67-008, and a 7-Way on the vehicle. On the vehicle side, if you are looking at the back of the 7-Way where the wires connect, the reverse light circuit is the center pin. It will need to connect to a reverse light wire behind one of the vehicle tail lights. On the trailer side the matching pin is again the center pin. So from that pin, you would route wire to reverse lights. Reverse...
    view full answer...

  • Is the LED Oval Trailer Utility Light Brighter than the Incandescent Oval Trailer Back Up Light
  • I went out to the warehouse and checked all of our clear oval lights. The Sealed, 6-1/2 inch LED Clear Oval Trailer Utility Light, 10 Diode, item # BUL72CB, whiter light than the light emitted by the incandescent Oval Trailer Back Up Light, item # BU70CB, but the light does not illuminate as large an area as well. The advantages of the LED light is that it does not draw near as much amperage as the incandescent light, it lasts much longer and it does not produce the heat produced by incandescent...
    view full answer...

  • How to Cut a Grommet Hole for Installation of the Oval Trailer Tail Lights # BU70CB
  • The easiest way to cut the oval hole for the Rubber Grommet, # a70gb, to install the Optronics Light part # BU70CB, in my opinion, would be to use a Light Mounting Bracket for 6-1/2 inch Oval Trailer Lights, BK70BB, as a template and then use a hole saw the correct size to cut a hole on each end of the mounting location. Then, use a angle grinder with cut off wheel or a reciprocating saw with metal cutting blade to cut the straight top and bottom sides of the hole. The correct width...
    view full answer...

  • How to Wire Up a Boat Trailer with a Reverse Light on a Vehicle with a 4-Way Connector
  • I have a solution for you, but electricity and water do not mix well so you will want to unplug the trailer wiring harness before you submerge the trailer in the water. The best setup I can recommend that will accomplish your needs and will still allow your wife's vehicle with a 4-way to connect to the trailer would be a 5-way setup. To convert the 4-way on your Jeep to a 5-way all you will need is the # 20036. Basically this will plug into the 4-way of your Jeep and the extra wire...
    view full answer...

  • LED Side Marker Lights to Replace Truck-Lite Model 60s on a Pumper Truck
  • The LED side marker/turn signal light that is comparable to your Truck Lite model 60 is our Optronics LED lights part # STL78AB. It's 7-9/16 L x 3-5/16 W x 3/4 D. It's a flange mount as well as it is sealed, waterproof and corrosion resistant. Your current marker light, such as part # BU70CB, is 6-1/2 L x 2-1/4 W x 2-3/8 D. You may also be interested in the Optronics chrome accent ring, part # A78CB, to add a little quick and easy dress up to the lights and your Pumper. I included...
    view full answer...

  • Reverse Light Wire Color on a 1996 Chevrolet K1500 Pickup to Allow Connection of Back Up Light
  • The best way to confirm which wire activates your vehicle reverse lights is to remove one taillight assembly and visually identify which lead goes to the reverse light bulb. To remove the taillight, open the tailgate and locate and remove the two taillight retaining screws. This will allow you to pull out the taillight assembly for access to the wiring. Then, for safety sake, it will be useful to have a helper turn the ignition to the on position without starting the vehicle. Then...
    view full answer...

  • Wiring Plug Recommendation for the 6-1/2 inch Oval Light part # BU70CB
  • I checked with Optronics and they recommend the part # A45CB and part # A49PB for plugs to fit the 6-1/2 inch Oval Light part # BU70CB that you referenced. It could be that your # A45CB just isn't orientated correctly so that it installs correctly, or that you are trying to install the plug into the wrong pins.
    view full answer...

  • How Much Power Does Optronics Backup Light # BU70CB Use
  • The Optronics backup light # BU70CB is rated at 0.4 amps power draw at 12.8 volts. Wattage isn't something that is calculated for trailer lights since they are not tested for their rates of energy conversion. I have included a link to a video review of this light for you.
    view full answer...

  • Will Optronics Trailer Back Up Light Work With 2-Wire Pigtail
  • I called my contact at Optronics and asked about the pigtail that can be used with the Oval Trailer Back Up Light, part # BU70CB. I was puzzled by the notes that say you can use the 2-wire pigtail, part # A45CB since the light has a 3-wire plug on the back. My contact said that on the BU70CB, the third plug is a dummy and is not used on this light. The A45CB will plug into two of the plugs and work just fine without compromising the waterproof seal.
    view full answer...

  • Can the BU70CB Light Replace a ST70RB and Be Used as a Reverse Light
  • The # BU70CB is basically the exact same light assembly as the # ST70RB that you currently have on your trailer so physically it will install very easily and in the exact same way as the # ST70RB. To wire it up so that it illuminates when your vehicle is put in reverse would mean that you would need to run a wire from those assemblies to a reverse light circuit on the trailer connector on your trailer. Since you have a 2014 Ram 2500 you will have a 7-way connector, the center pin of...
    view full answer...

  • Does The Optronics Trailer Light, # BU70CB, Have A Plug-In Wire Attached
  • The Optronics Trailer Light, # BU70CB, does not have a plug-in wire attached. It will require the Optronics Straight 2-Wire Pigtail, # A45CB. This part is the 2-prong plug that inserts into the back of the light and has a 6 inch lead with two wires. The red wire is bare at the end and the white ground wire has a ring terminal on the end. You will also need the Optronics Rubber Grommet, # A70GB, for flush mounting the trailer light.
    view full answer...

  • Can a Trailer Backup Light be Wired to a Vehicle Trailer Connector
  • Oval trailer backup light # BU70CB can be run directly off of the reverse light or 12 volt circuits from a trailer connector. If attached to the 12 volt circuit they would need to be put on a switch such as # PK34513. If wiring into the reverse light circuit they would turn on with the vehicle in reverse and turn off when the vehicle is shifted out of reverse. In either case you would not need a relay. If you wanted to mount the lights inside of a flat surface you can use grommet...
    view full answer...


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Info for this part was:

Expert Research:
Michael L
Expert Research:
Michael H
Expert Research:
Jeff D
Expert Research:
Jameson C
Expert Research:
Jeffrey L
Video by:
Kathleen M
Updated by:
Laura H
Updated by:
Sarah W
Updated by:
Brian T
Installed by:
Cole B

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