What is the difference between a headlight semi-assembly and a complete assembly?

1 Answers
DiAddyson
07/30/25 2:38am
Headlight assembly and headlight semi-assembly main differences: The headlight assembly includes the lamp housing, bulb, and computer control board, which can be directly wired and used after purchase. The headlight semi-assembly mainly lacks two components compared to the headlight assembly: the bulb and the computer control board, so it cannot be used directly after wiring. It requires connecting the original car bulb and control board to function. Below is an introduction to both: 1. The headlight assembly refers to the entire vehicle lighting system installed at both ends of the car's front, used for illumination during nighttime or dimly lit road conditions. It includes the lamp housing, fog lights, turn signals, headlights, wiring, etc., collectively referred to as the headlight assembly. Current headlight assemblies also include auxiliary lights such as daytime running lights and width indicator lights. 2. The headlight assembly also includes width indicator lights, used for driving in the evening or at night, ensuring safety during nighttime driving. The headlight is installed in the middle position of the headlight assembly. Generally, a car's headlight has only one bulb, which contains filaments for both low and high beams.
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