// Initialize Pentair / Channel Advisor Sales Reporting sTrack.initialise();
Home Pool Pool & Spa Lights American Products & Pentair Pool & Spa Lights Pentair Amerlite Pool Light for Inground Pools with Stainless Steel Facering | 300W , 12V , 15' SS | 78431100
NOTICE: The pool & spa industry continues to face industry-wide shortages on many products that most vendors expect to last late into mid-2022. We're allowing items to be purchased so that customers who choose to wait will have their order shipped when product is available. WE WILL EMAIL YOU RIGHT AWAY IF YOUR ITEM IS BACKORDERED. 

Pentair Amerlite Pool Light for Inground Pools with Stainless Steel Facering | 300W , 12V , 15' SS | 78431100

Pentair Amerlite Pool Light for Inground Pools with Stainless Steel Facering | 300W , 12V , 15' SS | 78431100 Pentair Amerlite Pool Light for Inground Pools with Stainless Steel Facering | 300W , 12V , 15' SS | 78431100
Customer Login Required
Please login to view price and order or click here to register.

Parts AvailableParts Available
Platinum Preferred Manufacturer
  • Pentair Amerilite Kwik Change Color Lens Kit | Blue-Green-Red | 78900100
    Kwik Change Color Lens Kit | Blue-Green-Red

  • Intermatic 100W | 120V to 12V Transformer | PX100
    Intermatic 100W | 120V to 12V Transformer | PX100

  • Intermatic 300W | 120V to 12V Transformer | PX300
    Intermatic 300W | 120V to 12V Transformer | PX300

Amerlite®, the world standard of reliability for underwater lights, features a stainless steel shell, 8-3/8 in. prismatic tempered glass lens, and stainless steel face ring with uni-tension clamp. Amerlites are UL listed to install in full-sized Pentair Pool Products, American, PacFab and Purex niches.
Amerlite® incandescent lights have been the world standard of reliability for underwater pool and spa lighting for decades. In fact, tonight they will light more than 3 million pools around the world.
Standard features include:
  • 8 3/8" prismatic tempered glass lenses for optimum light diffusion.
  • Heat-sensing water cutoff for low water protection.
  • Stainless steel shell and face ring are durable and highly corrosion resistant.
  • Optional plastic snap-on face rings let you coordinate with your pool finish.
  • Easy to service, all Pentair lights allow bulb changes without lowering your water level.
  • UL listed when installed in Pentair niches.
  • One-year limited warranty. See warranty for details.
  • Optional snap-on lens covers in blue, red, green and amber to instantly create different moods for different occasions.

Brand: Pentair
Bulb Type
Color Or White
Cord Length
Q & A
Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 10 questions Browse 10 questions and 11 answers
What is the replacement for No Y-063073 7878 XX 75 watt 12 volt MR-16 Model 792066 OR?
Tim H on Feb 21, 2017
Does this light work with 10v, 16v and 19v? Or have to be exactly 12v
thank you
Jalinos B on Jul 12, 2020
BEST ANSWER: I believe it is rated for a certain voltage due to the element. If you pump in 16v it may be brighter than normal and burn out sooner, same with lower voltage as 10v it may burn dimmer and burn out sooner due to build up on the element. I would stick with what your transformer emits for load voltage. Some transformers do vary in voltage of the load requirements. Check your transformer.
I had this light installed professionally 2 years ago for my in ground pool.
Just recently the light quit working, so I shut off all power sources and brought the light housing up and out of the pool. I bought the exact same 300 watt bulb and after installing the bulb and reconnecting the power it blew. There was a disc inside the light housing which resembled a buss or fuse and its blown. What could I have done wrong? Please advise and thank you.
If it means totally replacing the entire light and housing I may opt for an LED light instead.
Dan on Nov 28, 2015
BEST ANSWER: There is a transformer on the side of your house probably where the switch for the light is.converts 110 ac to 12 volt DC .your pool bulb is 300w 12volt Dc if the transformer is bad ,that could be the problem.
Does this work with a Hayward Transformer and niche?
A shopper on Jun 4, 2020
BEST ANSWER: Most transformers have different voltage selections to match what you are connecting such as pool light or lower voltage access lighting.usually 12, 13 or 14 volt. Brand name usually doesnt matter. Match the output voltage.
What is the dimensions of the housing on this one'?
Bill H on Sep 5, 2019
BEST ANSWER: The face ring on the light is 10.12" wide and the depth of the light is 7.72".
I have two of these 12v lights 300w with 50' chords installed and ready to be wired to a transformer. My pool guy indicated I need a 300w transformer but what I have read leads me to believe I need a 600w to avoid reduced output in each light. Suggestions?
A shopper on Sep 29, 2016
BEST ANSWER: I Only have one light and it works very well
I have an old (1980 vintage) Amerlite pool light which works fine with an LED bulb and no leaks. I would like to get a new stainless steel face ring for cosmetic reasons
, but the old model has 8 screw-down tab clamps holding the housing and the face plate together. The new ones I can find have a "universal clamp." Will the new face plate with universal clamp work with the old housing?
Tom W on Sep 25, 2016
BEST ANSWER: Slim maybe. But that light is obsolete and sooner or later you WILL change it out. Just do it now and get a color changing fixture. Its worth the little e extra cost.
Do you have a lite with a 50' cord?
A shopper on Jan 12, 2016
BEST ANSWER: no it did not have a 50 foot cord.
is this hook at the bottom and bolt at the top?
A shopper on May 23, 2019
My light diameter of the glass is 7 3/4 inches. What size is your cover for the one I clicked on?
A shopper on Nov 14, 2016
3.7 / 5.0
3 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Rated 5 out of 5
Phenomenal Service, Availability and Price.
I ordered a Pentair Amerlite - 300w, 12v, 15’ cord Pool light #78431100 online on a Friday morning and received it Saturday, the next day. What astounded me was that Pool Supply Unlimited is located in California and I live in Florida. Pool Supply Unlimited's supply chain is phenomenal. This model light is not that easy to find, but they had it available in stock. To top it all off, their price was about 30% lower than anyone else and delivery time from anyone else was a week to ten days.
I am totally 100% satisfied. Great job. I definitely would recommend Pool Supply Unlimited to anyone.
October 20, 2020
1 year ago
Rated 5 out of 5
quality light at great price
I ordered 2 lights and extra blue lenses. One fixture arrived with broken bulb inside and I called customer service. They asked for a picture of the broken bulb and asked if the rest of order was ok I said yes...4 days later new bulb arrived at no cost. I Bookmarked and shared them with my contacts.
Definitely buying here again
August 23, 2016
over 5 years ago
Rated 1 out of 5
Reviews are to hard to input
Fffffffggggggggffgcccccccccxxxcxxxxxxx. I wrote nice things but you make it to hard to review
August 26, 2020
1 year ago
Adobe Acrobat PDF Brochure
Adobe Acrobat PDF Owners Manual

Register your Pentair product online at www.pentair.com.

You've always been able to count on the quality and long service life of Pentair products. Pentair uses state of the art workmanship, materials and manufacturing processes to create the most innovative pool and spa equipment anywhere. And now Pentair products can deliver even more value and peace of mind, because Pentair offers extended warranty coverage on select products that are installed by a qualified installer*.
While the majority of Pentair products are covered by a sixty- (60) day warranty, a select number of products qualify for extended warranty coverage.
Select Bundled Products: applies to purchases and qualified installation of a minimum of a pump and filter, and one or more of the following: heaters, heat pumps, control systems, automatic cleaners, lighting, salt chlorine generators or UV sterilizer**
*Note: Qualified Installer - Defined as a licensed professional who charges a fee for his services, and possesses a business license, contractor's license and/or resale permit. Common examples of a "qualified installer" include: Swimming Pool, Home Repair or Landscape Professional; Plumber or Electrician; General Contractor; Heating and Air Conditioning Specialist.
**Note: Bundled products - must be purchased on the same invoice and installed at the same time. If any product within a bundle is ineligible for the bundled warranty coverage then all products within the same bundle will be disqualified from receiving the three (3) year extended warranty coverage for bundled products.
TradeGrade products must be purchased from a retail store (brick & mortar), pool builder or pool service company to receive a one-year, two-year or three-year warranty. If purchased online will only receive a sixty-day limited warranty. View the list of TradeGrade Products.
Ecommerce (EC) products: Products purchased from an Authorized Pentair Online Reseller (products beginning with EC-) receive a one (1) year (parts only) warranty from the date of purchase. The exceptions are: IntelliChlor cells and IntelliFlo SVRS pumps which receive a two (2) year warranty. EC products are not eligible for the bundled three (3) year extended warranty.
Visit www.pentair.com to submit your product warranty registration.
This information was updated on 11/19/2021. For the most current information and full warranty policy please visit www.pentair.com/warranty.

 Adobe Acrobat PDF Warranty Information
Hay muchas maneras diferentes de contactarnos, y nos gustaría hablar con usted sobre las preguntas de su compra, ayudarle a diagnosticar los problemas de su equipo y escuchar acerca de cómo podemos mejorar y todo lo que está en su mente.
Click Here
6am - 6pm Monday thru Saturday
Pacific Standard Time
Will-Call Hours Click Here
Be the first to know the latest news, deals & special events!


By signing up you indicate that you agree to the terms of our privacy policy.

Pool Supply Unlimited is an e-commerce company that loves water. We love to pump it, filter it, heat it, chlorinate it, light it up and stare at it while we're barbequing a fat, juicy steak. There are real pool professionals working here. Our guys have seen thousands of pools in their careers, no exaggeration. We are based in Southern California and can land most products to your door (within the 48 contiguous states) in less than a week.
Visa Mastercard Discover American Express