Hey folks. I have a 2013 BMW F800GS which has a burned out headlamp. I picked up the correct replacement bulb (H7 55W) and when I tried to replace it I found that the previous owner had adapted the headlamp and I haven't a clue what to make of this weird rig. What kind of a bulb is this? How does one replace it? I'm due to go on a rally in a couple of days time and fear I won't be able to figure this thing out before then. Help!