Rick's Free Auto Repair Advice

Posts Tagged: aim LED headlight bulb

Can you retrofit LED bulbs into a halogen headlight?

Here’s why you should never retrofit LED bulbs into a halogen headlight? First, it’s illegal everywhere in the U.S., Canada, and most other Countries to retrofit LED bulbs in a halogen headlight assembly. Here’s why. In the U.S. carmakers self-certify their headlights to meet the specifications listed in the Federal Motor Vehicle Safety Standard (FMVSS) No. 108, Lamps, Reflective Devices and Associated Equipment. So the headlight and bulb are designed and certified together. You cannot change the bulb type and still meet the specifications. In fact, it’s optically impossible for … Read More


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