What headlight bulb is mapped to the 2012 Honda Civic?
High beam · 9005/HB3 · sedan or coupe halogen high beam. Low beam · 9006/HB4 · sedan halogen low beam. Exclusion: 2015 coupe low beam uses a different bulb; factory HID/LED configurations are excluded. Confirm the beam position and whether the vehicle has factory halogen, HID, or a sealed LED assembly.
Can the same model year use different headlight bulbs?
Yes. Trim and lighting packages can change a vehicle from replaceable halogen bulbs to HID/Xenon or a factory LED assembly. Match the saved factory-lighting note and the number printed on the removed light source.
Can I replace a halogen headlight bulb with an LED retrofit bulb?
Do not assume an LED retrofit is road-legal or optically compatible. Use only the light-source type mapped to the factory housing.
Are D1S and D3S HID bulbs interchangeable?
No. Match the exact D1S or D3S marking, ballast system, and factory service information; the two types are not interchangeable.