Both pumps off front res work. When trying to run rear washer....no fluid to back. just leaks out bottom of vehicle under passenger door. Question? Where does the line run to the back? It looks like it goes Up out of the engine compartment but running that in the headliner doesn't make sense? Any help would be appreciated.

 

Post up in the 1st gen Durango Forums. Someone there should be able to help you out.

Welcome to DF!