All of our HID ballasts listed below are compatible with 99% of other manufacturer's HID bulbs. As long as your HID Bulbs have the bullet connectors (pictured left) then our HID ballasts will work with your bulbs. Keep in mind that your bulbs must be AC powered bulbs in order to light with our HID ballasts. Most HID Kits are AC powered for maximum lifespan and output. All of our AC powered HID ballasts also come with a FREE 1 year manufacturer's warranty. If you do not already have HID bulbs then please visited our HID Kits page to check out all our available HID conversion kits. Our ballasts come in 2 standard power ratings; 55 watt ballasts or 35 watt ballasts. Most vehicles can use either wattage ballast so wattage is a personal preference based on desired brightness. 55 watt HID ballasts output approximately 30% more light than a standard 35 watt ballast. We also offer the Slimline ballasts and the Canbus ballasts. Only vehicles with more sophisticated computer systems require the Canbus ballast which comes with built in functions to communicate with these sophisticated systems and not cause flickering or warning/error messages. That being said the Canbus ballasts are the most compatible ballasts and will still work in vehicles with much leaner computer systems. If you are still unsure what ballast you need please read our blog How Do I Decide Which Kit or Ballast Option to Choose?