HID Ballasts

Ballasts are necessary to turn on and run the HID gas discharge bulbs. They use a series of capacitors in an igniter to fire up the bulb with 25,000 volts of electricity, and then regulate power usage back down to less than that of a typical halogen bulb. Today, most ballasts have the igniters integrated into the bulb socket, whereas a lot of oldschool ballasts have external "standalone" igniters. There are a variety of designs produced by OEM and aftermarket manufactures, but we choose to only offer ballasts with integrated igniters because they're more retrofit friendly. Read more about HID Ballasts at TRS Tech.