These adapters that will allow you to use standard D2S HID bulbs with a set of aftermarket HID ballasts from an old HID kit.

If you're on a budget and are looking to perform a retrofit with projectors made for D2S bulbs, these are a nice solution to help save money.

Works with 99% of aftermarket HID kit ballasts that have "AMP" outputs. Please confirm compatibility by checking the product pictures if unsure.

Note that sometimes old/used ballasts have trouble striking new HID bulbs, as these parts to tend to "break-in" together.