I have a 79' Bronco that my daughter got into an accident with where I have had to replace the front clip to fix the damage. There is a vacuum canister that sits under the driver side metal inner fenderwell and to the front of the plastic inner fender lining that I removed a hose from but can not now find the hose or where it might have served. I have the vacuum canister that sits in the engine bay on the driver side fenderwell and all the hoses and connections are accounted for. What does this other cansiter serve??