H7 LED Car Headlights Modified Car Lamp

How to identify and choose the right bulb size？ Whether the bulb can be replaced depends on the model and base. If the model is wrong, don't even think about plugging it in! The common car bulb models are the following seven: H1, H3, H4, H7, H11, HB3, HB4.Vehicle lamp bulb base shapes are round, oval and rectangular. Depending on the model, the rectangular base is mostly a single-foot lamp holder, while the round base has two or three feet. Be sure to look carefully when purchasing and replacing. You can determine it in the following ways: first, check the vehicle user manual, which has detailed bulb specifications; second, look at the original bulb of the vehicle, which is generally marked with size information; third, ask the car manufacturer or a professional car repair shop. The size of the headlight bulb has a great impact on the lighting effect. For example, H1 single-filament bulbs are often used for high beams, with concentrated light and a long range; H7 double-filament