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Posts Tagged: LED headlight bulb

Convert to LED headlights?

Can you convert halogen headlights to LED headlights? If you’re asking if you can throw an LED headlight bulb into a headlight assembly designed for halogen bulbs, the answer is a resounding NO!. It’s not legal. It’s not safe. And, it’s not going to get you better night vision. Why isn’t it legal to convert a halogen headlight assembly to LED? First, when a carmaker designs a headlight assembly, they follow beam patterns and brightness specification regulations from The National Highway Safety Transportation Administration (NHTSA), an agency of the U.S. … Read More

SAE LED headlight bulb test results

LED headlight bulb tests Yi-wei Liu and John Bullough of the Rensselaer Polytechnic Institute tested nine LED headlight bulbs in three DOT certified headlight assemblies. Their findings were published by the Society of Automotive Engineers (SAE) on April 2, 2019. The SAE paper is titled; Evaluation of After-Market Light Emitting Diode Headlight Bulbs. Summary of the findings on LED headlight bulbs The paper concludes that the use of LED bulbs in two different types of headlight assemblies designed for halogen single filament bulbs resulted in: 1)  “Photometric measurements at several … Read More


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