vacum routing question?

i want to know if someone could help me find where the 2 hoses on the black circle need to be connected to…right now i have them connected to each other (togheter)but the car dies wen i accelerate and when rpm’s going down it goes to 0 and dies,hard to explain but yea…when i disconnect them the car runs good but its to accelerated… heres a picture (b18b)