which one of these two vacuum lines go to the transmission vacuum modulator?

[Meza]

The car is a 1993 190e 2.6L There are two vacuum lines I would like to identify where they go. Both starts at the engine compartment and go towards the transmission. One of them is white and is right next to injector#6. It comes out of the intake manifold. The other vacuum line is black and has a green stripe on it. It is attached to a piece (I don't know what is for). That piece looks like the one attached to the EGR valve with a vacuum hose. It is to the left of the brake booster bolted to the fire wall.

Which one of these two vacuum lines go to the tranny modulator?

PS.The white one holds vacuum when I use the vacuum pump and the other (blk/grn) does not?