OK, from the vacuum pump located on the drivers side of the engine down by the wheel well, there is a larger rubber hose that comes off the pump and runs up to a smaller rubber line up under the hood seal. From there you should find various "T" fittings which incorporate other plastic and/or small rubber vacuum lines. The main small vacuum line should run under the hood seal across the firewall and come out over by the exhaust.
I have a 90* like the one in your picture which runs from the hood seal area down into the firewall.
If you cant find any plastic/rubber vacuum lines where I've stated then I dont know what to tell you since they're not hidden and are pretty obvious.