Where is the vacuum reserve?

Through staring at the vacuum line schematic that TMoss so kindly created, I have found that I need to connect a vacuum line to the vacuum reserve. Can anybody give me any helpful hints as to where to find this "vacuum reserve" and how to hook a vacuum line up to it? (If it isn't obvious)

Yes, I already have a post on this, but it seems dead enough, and I have to go somewhere soon and am sick of driving a poorly running car.


Thanks again