The "K", or Kelvin rating indicates the color output of light on the defined Kelvin color temperature scale. It has nothing to do with the brightness (luminocity) of the bulb. It is simply a measurement of the color output the bulb will produce. Generally, outputs between 5500K-8500K will produce pure white color. A "K" rating above 8500K will have a slight blue tint to it.What is the difference between 50W and 100W bulbs?
The wattage of a bulb determines how bright a bulb will glow. It will NOT change the color of the bulb! Although the wattage might differ, the bulbs will operate at essentially the same core temperature.What if I touch the bulb?
DON'T DO IT! Avoid touching the bulb glass surface with your skin at all times. The oils from your skin, when on the glass, will cause the bulb to overheat, resulting in shorter life. If you do happen to touch the bulb, cleans it with isopropyl alcohol and a lint-free soft cloth. Keep in mind that bulbs are under pressure and have a potential to explode if not handled properly.Are these lights legal?
Many of the bulbs we sell are marked DOT/SAE approved. These lights are legal for use on all public highways in the USA. Many aftermarket upgrade bulbs are available, but not certified with DOT/SAE approval. This doesn't necessarily mean they do not meet the DOT requirements, it simply means the manufacturer probably hasn't gone through the process of certifying the products with the Department of Transportation. More than likely, you will never be stopped and questioned if you have DOT/SAE compliant bulbs. However, if you are concerned about a particular product, we recommend checking with your local DMV or law enforcement (Highly doubt they even will comprehend what you are inquiring about). You can also check the SEMA
automotive enthusiast website.
Bulb Installation Tips
When installing any type of bulb, handle them with extreme care. We generally give the advice to use cotton gloves for installation. Avoid latex gloves as they are an oil based product! Gently push the bulb into the socket while holding the base of the bulb. In the event that you do accidently touch the glass, clean it immediately with isopropyl alcohol and a lint-free soft cloth.
Turn on your lights AFTER you turn the ignition. The engine ignition can cause minor voltage spikes in your vehicle's electrical system. You should get in the habit of turning on the lights after you started your vehicle to avoid initial voltage fluctuation. If you are really that lazy, forgetful, or just a creature of habit, we suggest the installation of products such as the Pivot™ Raizin or Sun Automobile™ Voltage Stabilizer, which can help to minimize any voltage fluctuation.