Hi, I've got a couple of vacuum hoses leading into the drivers footwell from the firewall with no connections inside. They are both black in color, one is thick and if I follow it into the engine bay, is connected to a small clear filter of some sort than it branches into two hoses. The other hose(thin), if I follow it into the engine bay is connected to the side of the injector pump. I tried for several minutes looking underneath the dash, but couldn't find anything to hook this two into. On a similar note, my door locks don't work. I wonder if these hoses have anything to do with that. Thanks in advance.

__________________
2012 550CLS
1982 380SL
1985 300D
1998 ML-320
1997 E-320
1984 380SE