Guide to Headlight Socket Types: H1, H3, H7, H8, H11
Are you planning to upgrade your car’s headlights? The first step is knowing what socket type your car uses, since each bulb is designed for a specific fit and purpose. (For example, an H1 bulb is a single-beam design used in high or low beam headlights.) If you pick the wrong type, the bulb will sit crooked or even fail to lock into the housing altogether. Automotive bulbs (regulated under UN Regulation 37 ) are divided into three groups. · Group 1 bulbs are approved for all vehicle lighting functions, including headlights and taillights. · Group 2 bulbs cover the lights for signalling functions such as indicators and brake lights, while, · Group 3 applies to smaller applications. In this guide, we’re covering the socket types that are part of Group 1, from the H1 to the H11 bulb. Identifying the bulb sockets Headlight bulbs come in dif...