
Methods to distinguish car bulb models: First, confirm whether the headlight is a combined high/low beam. If it is, it indicates the bulb model is H4. If the headlight has separate high and low beams, you can refer to the manual provided with the vehicle to find the specific bulb model. Common bulb models include: H1, H4, H7, 9005, and 9006. You can also open the hood, remove the headlight protective cover, and take out the bulb to identify the headlight model by the lamp base and socket: If the headlight has 1 pin and a flat rectangular metal base, it is H1; If the headlight has 3 pins, a round metal base, and 3 protruding tabs on the outer edge, it is H4; If the headlight has 2 pins, a round metal base, and 1 protruding tab on the outer edge, it is H7; If the headlight has 2 pins and a longer protruding tab on the lower edge of the oval socket, it is H11; If the headlight has 2 pins and a smaller protruding tab on the upper edge of the oval socket, it is HB3 (also known as 9005); If the headlight has 2 pins and 2 smaller protruding tabs on the upper edge of the oval socket, it is HB4 (also known as 9006).


