95 Blazer Vacuum line question

[71-C10]

I have some dry rotted vacuum lines under the hood that I am replacing. There is a 7/32 line that runs from a check valve close to the vacuum reservoir, across the top of the power brake booster, then somewhere behind the engine (4.3). The hose has already split and came off on the engine end, so I can't trace it. There is not enough room to see behind the engine where the hose connects. Where does this hose go? Any help will be appreciated.




Eddie