​​​​​
I tried turning ballast in either direction but it won't budge and I'm afraid of using too much force. I know the connector should just pop down when pulled, but that's hard as well. Doesn't help that there isn't much room to work with.

 

It looks very much like the Xenon lights on my F-Type, and I had the same problem at first - turning the "ballast" and getting nowhere fast (PS - that square metal box on the back of the globe is not the ballast, it is the igniter which is integral with any D1S or D3S globe, the ballast is a separate "box" on the back of the light assembly).
The trick on my F-Type was to instead turn/twist that black plastic ring you can see just behind the igniter, it is in fact a locking collar which turns independently of the globe/igniter.
I can't remember which way I turned it now, and if memory serves it unlocked after about 60 degrees of turn.

 

Thanks Oz, going to give it a shot!

 

Yes. I just did mine recently and Oz is spot on. Twist that collar - anti clockwise I think. Then it unlocks and opens up on a hinge so you can get the lamp out

 

I have a 2012 facelift XF (2.2D Luxury). The nearside (passenger) inner headlight bulb (the one nearest to the grill that flashes orange/amber once when you central lock it) has gone. Left indicator a bit dodgy as a result, like the relay has gone. I know there is a cover behind the main dip beam of the unit to change that bulb, but there does not seem to be a cover for the orange/amber one next to it...? Has anyone managed to change this one successfully - if so, how? Or do I have to replace the whole unit because the clever person who designed this unit didn't factor in that the orange/amber inner bulb could fail? Any advice would be much appreciated. Thanks in advance, Andrew