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1157 Incandescent Bulbs - Double Contact Bayonet - 8 Watt - Soft White - Qty 2

1157 Incandescent Bulbs - Double Contact Bayonet - 8 Watt - Soft White - Qty 2

Item # DI79VR
Our Price: $6.07
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Incandescent light bulbs replace 1156 (S25) bulbs to provide 404 lumens of soft white light for automotive and RV applications. BAY15d base. Great Prices for the best vehicle lights from Diamond. 1157 Incandescent Bulbs - Double Contact Bayonet - 8 Watt - Soft White - Qty 2 part number DI79VR can be ordered online at or call 1-800-940-8924 for expert service.
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  • Reviews (5)
  • Q & A (0)
  • Photos

Diamond Vehicle Lights - DI79VR

  • Interior Light
  • Marker Light
  • Dome Light
  • Side Marker
  • Incandescent Light
  • 1157
  • Replacement Bulb
  • White
  • Diamond
  • Pair of Lights

Incandescent light bulbs replace 1156 (S25) bulbs to provide 404 lumens of soft white light for automotive and RV applications. BAY15d base.


  • Incandescent bulbs replace 1157 (S25) light bulbs to provide soft white lighting
    • Great for hanging, side mount, and some overhead applications
  • 12-Volt bulb has many applications for RVs, trailers, boats, and vehicles
    • Operates at up to 14V - ideal for automotive applications
  • Soft white color temperature produces a yellowish, white light
  • Double contact bayonet base installs into compatible 15-mm socket with a push-screw motion


  • Quantity: 2 bulbs
  • Light output: 404 raw lumens
  • Bulb size: 1" diameter
  • Bulb type: 1157
  • Bulb shape: S25
  • Base type: BAY15d
  • Light type: soft white
  • Color temperature: 2,700 K
  • Wattage: 8.3 watts
  • Candela: 32.14
  • Power draw at 12V: 0.94 amps
  • Input voltage: 12V - 14V
  • 1-Year limited warranty

DG71215VP Diamond Group Replacement 1157 Incandescent S25 Bulbs - BAY15d - 8 Watt - Warm White - 12V/14V - 2 Pack

Customer Reviews

1157 Incandescent Bulbs - Double Contact Bayonet - 8 Watt - Soft White - Qty 2 - DI79VR

Average Customer Rating:  5.0 out of 5 stars   (5 Customer Reviews)

Incandescent light bulbs replace 1156 (S25) bulbs to provide 404 lumens of soft white light for automotive and RV applications. BAY15d base.







See what our Experts say about this Diamond Vehicle Lights

  • Replacement Bulbs & Light Assembly Peterson Trailer Tail Light w/ Steel Housing On Circle J Trailer
    It appears you have the Peterson Trailer Tail Light w/ Steel Housing # PM425-3. You will need to lift the clip to pull out the lens and gain access to the 1157 Bulb # DI79VR. You can also consider upgrading to LED Bulbs # ARC93FR for increased bulb life.
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  • Recommended Replacements for Bargman 30-91-010 and 30-91-011 Trailer Lights
    To replace the Bargman 30-91-010 and 30-91-011 taillights on your trailer, you will use the Bargman # 30-92-001 for the side without the license plate and # 30-92-003 for the side that carries the license plate. These assemblies measure 8-9/16 inches long, 4-9/16 inches wide and 2-1/8 inches thick. I recommend measuring your existing lights to ensure a compatible match. I have also attached short video demonstrations on both of these lights so you can see exactly how they look. For a...
    view full answer...
  • Can The Bulb In A Peterson 421KRUS Tail Light Be Replaced
    The Peterson Trailer Tail Light # 421KRUS is a sealed waterproof unit, but the bulb will technically replaceable. However, removing the cover to gain access to the bulb will damage this seal and the light will no longer be waterproof, so I do advise replacing the entire light if the bulb has gone out. If you do choose to just replace the bulb and break the waterproof seal, I spoke to Peterson and the bulb that fits this light will be the 1157 style bulbs, like the Diamond # DI79VR.
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  • No Right Side Trailer Brake Light on Trailer but Turn Signal Works
    The stop and turn signal circuits are run on the same wire for most trailer's. Therefore, if the turn signal works but not the stop light or vice versa then the issue is likely the bulb. If you pop the cover off your taillight so should be able to see the bulb and inspect the filament. If either of the filaments are broken the bulb will need to be replaced. If you can let me know what bulb number is printed on the bulb I would be glad to see about a replacement. The most common is an 1157...
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  • Troubleshooting Pop Up Camper Trailer Left Signal/Brake Light Not Working
    The first place I always check is with the bulbs. The 1157 Incandescent Bulbs # DI79VR are easily damaged internally and not always visible. If you do not have a known good spare you can simply swap it with the passenger side bulb since you know that works properly. This will allow you to eliminate the chance of the bulb being bad. If the bulb is know to work then I recommend checking with any fuses that you may have on your vehicle. If your tow vehicle came from the factory with the...
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  • LED 1157 Light Bulbs For Converting Peterson Trailer Tail Lights 432000 & 431800 From Incandescent
    I recommend replacing your Incandescent Bulbs # DI79VR on your Peterson Tail Lights # 432000 & # 431800 with LED Bulbs # CM93236. There is currently not a LED light that will bolt in place of your current Lens # 420-15 on your tail lights. These LED bulbs have a 2,000 hour bulb life.
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  • Replacement Bargman Tail Lights for Mid-80s Coleman Santa Fe Camper
    Thank you for the photo of your Coleman trailer's Bargman 92-series tail light. We do offer a replacement Bargman 92-series light assembly, part # 30-92-001, which uses the same 1157 bulb as your original. For a bulb only use part # DI79VR. I suggest an application of dielectric grease # 11755 on the bulb bases to help keep them free of corrosion.
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  • Bulb Replacement for Peterson # 440 Tail Light
    The Peterson Combination Trailer Tail Light # 432200 uses either 1156 ( # DI49VR ) or 1157 ( # DI79VR ) replacement bulbs. The 1156 are single filament bulbs (marker lights) and the 1157 are double filament bulbs (multi-function).
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  • Replacement Bulbs for Optronics # ST16RB Taillight
    The Trailer Light Kit you referred to uses an # ST16RB and a # ST17RB taillight, which use a 1157 replacement bulb which we offer as part # DI79VR .
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  • How to Replace Bulbs in ST47RB Optronics Incandescent Trailer Stop/Turn/Taillight
    The housing of the Optronics # ST47RB lamp is held together by two screws that are accessed from the rear of the lamp housing. Once the screws are removed, the lens can be removed from the housing and the 1157 bulb, part # DI79VR can be replaced. An LED version is available as part # M824R. The LED lamp uses less power, will be much brighter and will last up to 50 times longer than a comparable incandescent lamp.
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  • Is the Running Lamp or Brake/Turn Signal Filament in 1157 Bulb Supposed to Be Brighter
    As far as what position they occupy in the bulb, I couldn't say. Dual filament bulbs like the # DI79VR have two different filaments. One filament is of a different resistance value, and thus makes a brighter light. but the brake and turn signal filament would be the brighter of the two. From what you describe, it certainly sounds as if you have the brake/turn signal and running lamp wire reversed.
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  • Will Bargman Replacement Lens 30-92-012 Work for 2007 Fleetwood Taos Pop-Up Trailer Light
    The Bargman Replacement Lens # 30-92-012 is the replacement lens for Bargman 92 Series surface -mount tail lights, like the Bargman # 30-92-001 and should fit the light on your 2007 Fleetwood Taos Pop-Up trailer. The replacement lens is 8-1/2 inches by 4-9/16 inches and I have included a video with more in-depth information on this product. If you need further replacement parts for your Bargman 92 Series light, I recommend the Wesbar Bulb # DI79VR. It is a double-filament light bulb and...
    view full answer...
  • Replacement Bulbs for the Roadmaster Bulb and Socket Kit # RM-155-2
    The Roadmaster Bulb and Socket Kit, # RM-155-2, uses 1157 bulbs. For replacement bulbs, you will want part # DI79VR.
    view full answer...
  • Does Bargman Tail Light w/ Backup # 30-92-002 Come With Sockets and Bulbs and Instructions
    The inside of the Bargman Surface Mount Tail Light w/ Backup, part # 30-92-002 has two sockets with two bulbs. The top bulb is a # DI49VR single filament bulb that is for the reverse light. The bottom bulb is a # DI79VR double filament bulb that is for the tail light functions. I went out to the warehouse and took the lens off of the unit and took a picture that will show you what the inside looks like. I have attached the picture for you to see. The Bargman light does not come with any...
    view full answer...
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  • Are Bulbs Included with the Magnetic Mount Stop, Turn and Tail Towing Light Kit # TL21RK
    Yes, the bulbs are included in the Magnetic Mount Stop, Turn and Tail Towing Light Kit with 20 foot Wiring Harness, item # TL21RK. The statement, Limited 3-year warranty - excludes bulbs, is referring to the fact that the bulbs are not warranted for three years. If replacements are needed the Replacement Light Bulb, item # DI79VR, is the correct part. You can gently pry the rear black plastic cover, on the back of the light, off with a small screwdriver.
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  • Replacement Bulbs for Roadmaster Bulb and Socket Flat Towing Taillight Wiring Kit # RM-155
    The Roadmaster Bulb and Socket Taillight Wiring Kit, part # RM-155 would take a standard 1157 replacement bulb. We offer them as part # DI79VR.
    view full answer...
  • How To Find What Size Light Bulbs Are Used In The Tail Lights On a Fulton Trailer
    The most common bulbs found inside trailer tail lights are the 1157 # DI79VR and the 194 # A194B. You would need to pull the bulbs out of the socket and check the base for any markings to identify your exact bulbs. If these are what you find we do have the LED Upgrade # DI52VR for the 1157 and # ARC68FR for the 194. Please let me know if you find any other markings or if you cannot find any markings please send me a picture of your bulbs and the base so I can help you to determine what...
    view full answer...
  • Which Light Bulbs Fit The Tail Lights On a 2005 Fleetwood Pop Up Camper?
    Without knowing exactly what tail light is on your 2005 Fleetwood Pop Up I cannot say exactly what bulbs your camper uses. There is no way to look up the exact factory parts but the most commonly used bulbs in were the 1156 # DI49VR, 1157 # DI79VR and 194 # A194B. You should be able to find the bulb number on the bulb base otherwise if you can verify which tail light assemblies you have I can help you find the correct bulbs.
    view full answer...
  • How to Replace Bulb in Wesbar 403075 Trailer Taillight
    I've put in a request to have the video reshot, but in the meantime changing the bulb is very easy. Simply remove the Phillips screw from the underside of the lamp assembly. Once the screw is removed, you can gently pry the clear plastic cover off which will provide access to the bulb (see the provided photo). Push in on the bulb and give it a twist, then pull it free. The replacement bulb is an 1157 which we sell as part # DI79VR.
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  • Replacement Taillight for Heritage Boat Trailer
    If you're speaking of the # 106410 Wesbar Combination trailer tailllight, this particular lamp has a removable lens, and an interior capsule that can be removed by loosening 4 screws which will allow you to change the bulb. Some of the earlier versions used a self-contained capsule that needed to be replaced in entirety, but those are obsolete and are no longer available. Some of those lamps used a ground wire that attached to the trailer frame and two wires that terminated in a 2 pin connector,...
    view full answer...

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Info for this part was:

Employee Jeff D
Installed by:
Jeff D
Employee Daron K
Edited by:
Daron K
Employee Brian T
Written by:
Brian T
Employee Noah M
Updated by:
Noah M

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