Thanks for the replies!   Your both right, I did an in depth check today.   Basically the inner lights have 2 bulbs in each which are:   1. The Side (Parking) Lights, lights you put on when its starting to get dark (one turn of the knob) *quiet at the back*   2. The Headlights (the ones that you flash to let someone go)   Jaguars name for the inner set of lights are: Side (Parking) Lights   The outer lights are simply called: Headlights   Hope this information helps owners in the future, loving mine so far.   Thanks again   J