On my 1988 560sl I have noticed a very small vacuum tube that appears to be plastic has broken and i'm looking for a source to replace it. It runs from a switch on the front of the intake manifold that has three lines connected to it and it runs behind the power steering pump in the direction of the drivers side headlamp assembly. Didn't have time to trace and see where it leads. Have looked at a few sources thinking I may find it as a roll or length but I'm only finding the rubber vacuum hose which is larger. This tube connects to the switch by a rubber elbow that is pushed onto the switch...Thanks in advance for your help...i have also posted this on the sl forum