Ford and Chevy Fixtures have one Bulb Socket with two filament bulb (Controls all Functions).

VW Fixtures have two Bulb Sockets with two 2 filament bulbs (VW Requires three filaments).

Comes with lens screw only, all other mounting screws can be purchased at your local Hardware Store.

In the video below the Taillight is being installed on a Gazelle, for MG TD center fixture on flat area of rear fender.