Automotive bulb types

Automotive bulbs come in various types, depending on their use in the vehicle. Here’s a breakdown of common automotive bulb types:

1. Headlight Bulbs

• Halogen: The most common type of headlight bulb, known for its long life and affordable cost.
  • Examples: H1, H3, H7, H11, 9005 (HB3), 9006 (HB4)
• HID (High-Intensity Discharge): Also known as Xenon, these bulbs are brighter and more efficient than halogens but can be expensive.
  • Examples: D1S, D2S, D3S, D4S
• LED (Light Emitting Diode): Energy-efficient and long-lasting, becoming increasingly popular for headlights.
  • Examples: H11 LED, 9005 LED, 9006 LED

2. Fog Light Bulbs

• Typically use halogen, HID, or LED technologies.
  • Examples: H1, H3, H11, 9006

3. Brake/Tail Light Bulbs

• Incandescent: The traditional bulb type used in many vehicles.
• LED: Becoming common for brake and tail lights for their faster response time and durability.
  • Examples: 1157, 7443, P21W

4. Turn Signal/Indicator Bulbs

• Incandescent: Standard in most older vehicles.
• LED: Faster and more energy-efficient.
  • Examples: 1156, 7440, PY21W

5. Interior/License Plate/Side Marker Bulbs

• Commonly small bulbs used for various auxiliary lighting inside and outside the car.
  • Examples: T10 (W5W), T15, 194

6. Reverse Light Bulbs

• Used to illuminate when the vehicle is in reverse.
  • Examples: 1156, 7440, P21W

Each type has a specific fitting and brightness level suitable for the intended automotive application. Always check your vehicle's manual or the existing bulb for the correct replacement type.