For my motorhome, I initially bought these flat panel bulbs.
https://www.amazon.com/gp/product/B00FSIN0U6/ref=ppx_yo_dt_b_asin_title_o05_s00?ie=UTF8&psc=1
Which as it turns out, had no heat sink capability and no name LED elements. They looked great, were easy to install, has the 4500K natural light color, and a lumen capacity similar to the 1141 bulbs I was replacing. What could go wrong? well, they were cheap junk, that is what. They all worked but in the course of the first year of light use, the elements, one by one, started failing, making for less light from the panel. Eventually, I gave up and that is when I did a full conversion to LED flat panels with the elements being separated from the driver circuity by an air gap, and the capability of dissipating heat.
Companies like M4Products and SuperBrightLEDs, while charging more for their products, go to great lengths to provide a product that won't fail, provides the expected light and color, and back them with a good warranty.
I consider spending the extra money to get a well made long lasting product, worth every penny.
Disclaimer: I have no connection to M4Products other than being a satisfied customer. I learned of the company and their products thru the RVGeeks videos on LED upgrades, and in fact, if you do order, watch one of the videos, and specify "rvgeeks5" as a discount code to get 5% off the purchase price.
Charles
