On many Volkswagen and Audi cars the headlight bulbs are held in place with external clips that have the power wires built into them. This can make installing an aftermarket HID conversion kit difficult because the larger HID bulb doesn’t fit and the new HID bulbs already have wires coming out of them. This same problem exists when trying to install aftermarket LED bulbs, specifically H7 LED headlight bulbs on Volkswagen and Audi vehicles.
GTR Lighting has specific HID bulb adapters to solve this problem when upgrading to HID bulbs. You can find a list of all these adapters here. So could we use the same H7 adapter and make it work of H7 LED headlight bulbs?
Here is what we found: The H7 HID Bulb Adapter, found here, can in fact be used to create proper H7 bulb fitment in Volkswagen and Audi vehicles that have the metal clips to hold in the bulbs. With some slight modifications, this adapter worked great.
This method should allow you to install H7 LED headlight bulbs into your car when a bulb adapter is required.