Hello I just buy a mercedes benz 240D 1979 it has been sitting for 6 months in my house I really don't know nothing about diesel cars but I would love to learn how to repair Mercedes benz diesel cars as long I can see came vacum lines same are cut and the electric system is a disaster I just went to the junk yard and I buy the glow plug relay thanks for any help I'm looking right now the electric diagram and the vacum diagram for my mercedes 240d 1979 and any good book that it will help me thanks and sorry for my english thanks