Vacuum ?
 

Howdy-reassembling interior of a cherokee after heater core replacement (pure hell)and am having trouble reconnecting some of the vacuum lines-specifically, once the pink and black leave the firewall, they go.....? Secondly, I've got a solitary purple and black one that runs from the back of the ventilation controls-that ones just kinda hanging-can anyone help? Oh, and if it helps, the four wheel drive only lights up "part time"-truck will not run high 4 but will run low 4. Thanks