87 190 16V found a solid green vacuum line under the dash disconnected. Ends/starts around the passanger side fresh air duct. If I route it under the dash, it will reach and area around the ignition swich, however, I can not find the other end. It goes into some rubber fitting as there are marks indicating it was hooked up. Any suggestions? Does someone have a vacuum diagram for this car. It`s not on that great(ha ha) MB CD or the Haynes manual. Thank you.