Could I not just purchase a stronger watt halogen bulb to get a brighter light?

Answer: XENON HID lamps are 35 watts while traditional halogen bulbs are anywhere from 50 to 250 watts. Even though HID lamps draw less current, they produce up to 3 times the light output as the higher wattage bulbs. Increasing the wattage will make the bulb a little brighter yet still much dimmer than HID lamps. Also, as you increase the wattage on your bulb, you increase the current draw on your entire electrical system, requiring rewiring the light system to handle the load. This is critical in many aircraft applications.