Hey guys, I also bought the same kit from flyn, i got it a while ago & will be fitting it myself, but just haven't had a chance too, but it is sorted for next Tuesday when I will have everything I need.
Anyway, included in the kit I have is a 4ft long hose with a t-piece already in it, it should have come in yours too. I haven't looked tonight (only just recalled this thread now it's too dark to look), but judging from what you said earlier about the solenoid etc, this should be what it's for. I am guessing you can use this to replace one of the lines, as it has 2 outlets. I don't have a digital camera so I can't take a photo of it, but it did come in the kit & I would say that's what it's for.
For anyone else, if I can get hold of a camera for Tuesday I am going to take step-by-step pics of what I do for the fmic install, I'm sure the mods could make that a sticky & it will at least give a guideline of what do do if you are willing to get hands on with your car.