Tips For Safer Driving Ensure you always get a professional alignment after you change a headlamp, driving lamp, or bulb. Always use a bulb of the recommended wattage in your driving lamps. Using a higher wattage bulb than recommended will only minimally increase the light performance but will substantially increase the generated heat. This may cause damage to lamp components. Lights converted to Xenon discharge systems that are not designed for this technology is not recommended and can be illegal in certain on-road applications. If you are ‘blowing’ bulbs regularly, and/or your lights are not as bright as they used to be, try fitting a relay. A relay will both protect your switch and electrical system, as well as assist in applying the design voltage to the bulb.