These LED bulbs are expected to be much brighter than halogen bulbs. Installation was as easy as changing lightbulbs. No modifications or additional chipsets or components are required. They're a bit longer than the halogen bulb, but I had no problem fitting them into the lens. See picture for comparison. I installed them on a 2009 Honda Civic and they work great. I bought a second set in a different size for another car from the same company and am very happy with them as well. Highly recommended.
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