Installed on a 2014 GMC Sierra SLT and the difference was (pardon the pun) like day and night. They are much brighter, radiate further and illuminate the roadway whiter, making it much easier to see. It took less than 20 minutes by following the installation instructions, adjusting the displays to the 3 and 9 o'clock positions with the included hex wrench, and making sure the positive and negative wires were connected correctly. The light works without any problems, noise or flicker. Can't comment on durability yet, but the bulbs are rated for up to 50,000 hours while most halogen bulbs are only rated for a few hundred hours. For almost the same price, I will go for LED bulbs because they heat up less, use less energy and give off better light.
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