vacuum pipes

89 1.8 Carb Clipper… On the vacuum pipe from the inlet manifold to the brake servo there are two T pieces that come of where the one way valve is.  one goes to the vacuum unit on the distributer, but where does the other go to ?

Can anybody just have a quick look at theirs and tell me please?

I've looked right through the haynes manual but cant find it !

Thanks
Marc

Anyone got 5 mins to have a quick look and let me know?

Thanks
Marc