H1 adapter retainer clips holders are used for aftermarket H1 LED, HID headlights bulbs replacement upgrade OEM halogen headlamps for vision and safety. The LED or HID headlights bulbs can't directly install into the headlamps housing, for OEM halogen bulbs has retainer clips attach to the lamp, yet LEDs don't have it, for many vehicles H1 LED/HID headlights bulbs change, which will require extra aftermarket H1 adapters to make them fit.
Due to different vehicle's trim require different H1 adapters, so please follow below instructions before purchasing.
1. Pop up the hood, check your headlights for a similar looking plastic part socket behind the bulb to identify whether or not you need these aftermarket adapters.
2. If your vehicle's OEM halogen bulbs come with adapters, compare this product with the stock headlamp socket, please check your OEM adapters to confirm the correct one before purchasing.
3. After chose the correct one, please check the video installation guide for more details. Professional installation is recommended.
4. For some European vehicles, extra LED resistors or decoders maybe required to avoid the LED bulbs' flickering or error code.