Not sure which bulb you need? Now that you have checked your lights, you might find you need to replace a blown one and now you're not sure which one you need!? Here's some handy tips to help you find the right bulb for your car! - Check your vehicle handbook - this usually gives you a list of the specific bulbs for the specific applications. - If you have removed the bulb already, check it closely, headlight bulbs will have the bulb type marked on it such as, H1, H4, H7, D1S, D4R etc... - Still