There's a prong (looks like a headphone jack) on the new lights which looks like it plugs into the tube - I'm guessing this means the adjusters will worth on the new lights too?
Zayyan wrote: Can I cut the tube? It doesn't seem to lead to anywhere.
How can it work if it doesn't lead anywhere?
If it does work, then don't cut or attempt to disconnect the tube.
It's held in place by two plastic rivets of the type with a locking pin in the middle. Push the pin out, remove the rivets and swap the whole assembly over.