3 Tips on What to Check before you Upgrade Halogen Headlight Bulbs to LED or HID.

1. Headlight Bulbs Adapters.

On around 1% of vehicles headlight bulbs are fitted into an “adapter” before they are fitted into the headlight housing.
Normally, headlight bulbs sit directly into the headlight housing and are either held by a retaining clip or are pushed in and twisted in to lock into the headlight housing.
When you buy a led kit or hid kit, check how the bulb is retained in the headlight before you purchase them. If they need “headlight bulb adapters”, make sure your supplier gives you the bulb adapters for free with the kit, or has them available for purchase.

2. Bulb Type.

The best way to check the bulb type that your vehicle has in its headlights is to check your manual, call your dealer with the VIN number, or check to see if a part number is written on the bulb.
Some websites may not be accurate for the bulb type in your vehicle as they vary from country to country.
The most common bulb types will have part numbers such as H1, H3, H4, H7, H9, H11, HB3 9005, HB4 9006. If you call your dealer for the part number, make sure they give you this OEM number, and not their stock keeping number.

3. Can-Bus Decoders.

On vehicles that where your lights turn on automatically, you will need to get can-bus decoders.
Can-Bus is where your vehicles computer turns your lights automatically when you open the door, put the key in the ignition, or when you go through a dark tunnel and the lights switch on automatically.
Make sure when you buy a LED or HID headlight bulb kit your supplier has can-bus decoders available or has them available for purchase.