Angel Eye Halo Plug for BMW E39 Facelift Headlights

If you have an E39 with modified headlights, this is for you. This plug replaces the stock angel eye bulb socket when upgrading to aftermarket angel eyes. Left as-is, it will seal off the opening when paired with the factory o-ring. Drill a hole in the base and add a grommet, and you now have a safe place to route the new angel eye wiring. Brilliant, right?